: ;;•:; Jul >': >i " mil imwk . ''/!{''-'- . ... iirfili HB31 .M415 i Massachusetts Institute of Technology Department of Economics Working Paper Series INTERNATIONAL AND DOMESTIC COLLATERAL CONSTRAINTS IN A MODEL OF EMERGING MARKET CRISES Ricardo J. Caballero, MIT Dept of Economics Arvind Krishnamurthy, Northwestern University Working Paper 00-21 September 2000 Room E52-251 50 Memorial Drive Cambridge, MA 02142 This paper can be downloaded without charge from the Network Paper Collection at Social Science Research http://papers.ssiTi.com/paper.taf7abstract _ id=244 1 44 DEWEY MASSACHUSETTS INSTITUTE I6Y OCT 3 2000 L LIBRARIES Massachusetts Institute of Technology Department of Economics Working Paper Series INTERNATIONAL AND DOMESTIC COLLATERAL CONSTRAINTS IN A MODEL OF EMERGING MARKET CRISES Ricardo Caballero, J. MIT Dept of Economics Arvind Krishnamurthy, Northwestern University Working Paper 00-21 September 2000 Room E52-251 50 Memorial Drive Cambridge, MA 02142 downloaded without charge from the Social Science Research Network Paper Collection at http //papers ssrn com/paper taf?abstract_id=2441 44 This paper can be : . . . Digitized by the Internet Archive in 2011 with funding from Boston Library Consortium Member Libraries http://www.archive.org/details/internationaldomOOcaba International and Domestic Collateral Constraints a Model of Emerging Market Crises in Ricardo J. Arvind Krishnamurthy* Caballero September 12, 2000 Abstract We build a constraints. model of emerging markets Firms in other. We financial collateral real variables. A binding international constraint and to a sharp rise in interest rates fire sales can lead to wasted international can interact in important ways. The assets causes banks to fail in their economy with affect aggregate leads of domestic assets, while limited domestic collateral. first is in the These two disintermediation: a collateral constraints fire sale of domestic economy function of reallocating resources across the leading to wasted international collateral. that firms in an in- also have limited borrowing capacity with respect to each study how the presence of and changes in these collateral constraints and collateral which features two types of a domestic economy have limited borrowing capacity from They ternational investors. crises The second is a dynamic effect. We show limited domestic collateral and a binding international collateral constraint will not adequately precaution against adverse shocks, increasing the severity of these shocks. on the literature Our approach is distinctive in that, while role of financial constraints in within either of these collateral deficiencies, macroeconomics draws we argue that their static much of the their insights and dynamic interactions have important consequences for emerging markets' performance. Keywords: Capital flows, straints, contractual eral, fire sales, microeconomic and aggregate financial con- and corporate governance problems, balance sheets, wasted collat- domestic and foreign spreads, excessive leverage, collateral under provision, real depreciation, banks. "Respectively: MIT and NBER; Northwestern University. Craig Burnside, V.V. Chari, Zingales, Bhagwan Chowdhry. We thank Daron Acemoglu, David Backus. Oliver Hart, Bengt Holmstrom, Andres Velasco, Luigi two anonymous referees and seminar participants at the Fed (Board of Governors), Harvard. IMF, MIT, Northwestern, UCLA, Finance (Buenos Aires) for their meetings, WFA meetings, the CEPR Summer Symposium LACEA/UTDT Summer Camp in International Economics and EFG-NBER on Financial Markets (Gerzensee), and the comments and suggestions. Ricardo Caballero thanks the support, and the AEI and Research Department their hospitality and support. E-mails: caball@mit.edu, a-krishnamurthy@nwu.edu. This revised version of "Emerging Market Crises: An at the IMF, where part of this Assets Market Perspective, " NSF for financial work was accomplished, (1999). is for an extensively 1 Introduction The recent episodes of emerging market crises have increased awareness, both in the aca- demic and policy formance. In flows circles, many that financial factors play a central role in macroeconomic per- accounts, the sudden stop and then withdrawal of international capital was the spark that set off these crises. and exchange rates were asset prices "well The IMF asserts that the ensuing declines in beyond what was assessment of economic fundamentals, even in the light of the Outlook, May 1998, p.4.) Falling asset prices while widespread bankruptcies among justified by any reasonable re- (IMF World Economic crisis." compromised weak domestic banking systems, over-leveraged firms all contributed to significantly aggravating the downturn. While often blurred, there are essentially two models in the macroeconomics veloped economies" literature Holmstrom and Tirole literature. (e.g. In the distinct types of financial constraints first group, best represented in the "de- Bernanke and Gertler 1989, Kiyotaki and Moore 1997, 1997), widespread microeconomic financial constraints either among firms or banks limit a country's ability to reallocate resources, exacerbating the amplitude and costs of recessions. In the second group, as emphasized in the "emerging economies" literature, a constraint on the aggregate borrowing of a country binds and leads to real dislocations. for explicit model of Examples include Bulow and Rogoff (1987) and Atkeson and Rios-Rull (1996) models of this international Calvo (1998), for an implicit it. The purpose some collateral constraint, or of this paper is to construct a simple equilibrium of the stylized facts surrounding emerging markets' crises, on the respective roles of these model to account and thereby shed for light two types of financial constraints. The analysis allows us to delineate the distinct roles of these financial constraints, as well as uncover important interaction effects. Firms in our the amount model have limited international collateral that determines we imagine of financing that foreign investors extend to these firms. Concretely, that international collateral consists of export sector revenues that international investors domestic collateral that determines We assume that firms within an economy have how much financing they can obtain from each other. think of real estate as a prime example of domestic collateral. A in We also can seize in the event of loan default. tightening of the international constraint at the country level can generate a large rise domestic interest rates and a in real activity. to finance all The binding aggregate investment needs. The these resources. collateral. fire sale An of domestic assets, and a corresponding contraction constraint means the economy runs out rise in interest rates reflects alternative channel behind a real contraction Even when the economy has the high is of resources shadow value of a shortage of domestic sufficient resources in the aggregate, if firms in need of funds have insufficient domestic collateral they These two resources. sector is collateral constraints be able to access these will not can interact via a credit crunch. If the banking responsible for reallocating resources across the economy, and this capacity compromised by a is asset prices, the tightening international financial constraint leads fall in to a contraction in effective domestic collateral. The interaction can also occur in the reverse direction. A typical example is the large Asia contracted during the years preceding the limited domestic collateral and amount crises. them with too little of foreign liabilities that firms in We show that the interaction between the international collateral constraint, in a causes firms to undervalue international collateral. That that leave puzzling aspect of recent taken by the private sector that leave the economy more vulnerable to crises are actions adverse shocks. A is, dynamic setting, firms systematically take actions international collateral during crises, exacerbating the effects of adverse shocks. The economics behind this under-insurance result arises from the observation that lim- wedge between the ited domestic collateral creates a domestic firm and the external return that domestic). In a crisis the economy is requires an ex-ante decision to retain tracting less foreign debt ex-ante. is internal return on investment promised to an outside investor short of international collateral. some However if (i.e. for a another Abating the crisis international collateral - for example by con- there is a wedge between internal and external returns on investment, the private valuation of this international collateral will be less than its social value. The usefulness of our analysis two-fold. First, while is of the financial factors illustrated by the model, framework in which to clarify these among many we do provide a fairly some simple and unified in the analysis of ex-ante precautionary the private sector, and to guide policy actions. Relation to the literature. arise in are not unique in noting mechanisms. Second, the model uncovers the dynamic undervaluation result, which should be helpful questions - both we As we mentioned above, microeconomic borrowing constraints parts of the literature on financial constraints in macroeconomics, and aggre- gate collateral constraints arise most explictly in the sovereign debt literature. Since in the latter literature default and its costs are mostly modeled as a country-wide phenomenon, the question immediately arises on whether the domestic private sector internalizes the fect of their actions ef- on the likelihood of these events. Bardhan (1967), Harberger (1985) and Aizenman (1989) advocated taxing capital flows on the grounds that individual agents do not pay for the increase in a country's average cost of capital brought about by their ternational indebtedness. While our result on collateral undervaluation is in- related to theirs, our externality stems from imperfections in the domestic financial system rather than from the country's monopsony power The modeling approach we in international financial markets. follow owes to Diamond and Dybvig's ( 1983) canonical model and particularly to Holmstrom and Tirole (1998)'s departure from of liquidity in As the context of firms. in that paper, firms in our economy this model receive a production shock that they must cope with by mortgaging collateral in order to borrow additional funds. The investors. latter Analogously, firms in the model of Holmstrom-Tirole can borrow funds either from other firms the first can be obtained from other domestic firms or directly from international in the corporate sector or directly from savers. Intermediation renders transaction frictionless in Holmstrom-Tirole and their macroeconomic analysis focuses on the implementation and efficiency of the second transaction. In contrast, both transactions encounter frictions in our model. Our underprovision of collateral results are analogous to the free rider problems and underprovision of liquidity studied in the banking literature (see Jacklin 1987, Bhattacharya and Gale 1987, Allen and Gale 1997). However, the source inefficiency in our model is of the externality behind this the endogenous result of borrowing constraints, while theirs the exogenous divergent ex-post valuation of liquidity by consumers. The literature on is crises has focused on models of bank runs and their key sequential service constraint (Diamond and Dybvig 1983. Goldfajn and Valdes 1998, and Chang and Velasco 1998). While we do believe that bank failures and runs can aggravate model points out that the basic features of agent or institution is committed to supply we emphasize boosts and crises as crises, and liquidity. we discuss in section their prelude arise even Moreover, the fire sale 5, our when no mechanism feeds from the likelihood of banking crises themselves. Finally our asset pricing implications arise from market segmentation. Allen and Gale (1994) and Merton (1987) have noted the impact of segmentation on Outline. asset prices. Section 2 follows with a description of the model and the different regions that arise from the existence of two types of financial constraints. Section 3 focuses on the "wasted collateral'' region, where the domestic-microeconomic constraints are binding but not the international-aggregate constraint. Section 4 is the core of the paper, as it adds the international financial constraint and shows the dynamic feedback from the domestic to the international constraint. the reverse feedback, that is from the international financial constraint to the domestic constraint. Section 6 concludes, 2 A Section 5 introduces banks and presents an example of and is followed by an appendix. Time-to-build model with limited international and do- mestic collateral 2.1 Time. Preferences, Technology and Financial Constraints The world and borrowing lasts three periods, t decisions. Adverse shocks — 0,1,2. In date may affect 0, agents make production at date real investment 1. Agents must H At date again making borrowing choices to cope with these shocks. and consumption takes realized, debts are repaid, DateO 2, place. Date2 Date — + Repayment Consumption Shocks Borrowing Investment Budget Constraint: Date d Investment Constraint: returns are all < f A.' = d c(k) w f f Production: Time-to-build - (INTACT) k R k Prob = \/T (DISTRESSED? Need additional investment of k + r (i) : The economy has Agents and heterogeneity. two types of agents: 1 k 9 = R k import goods Figure A (0 ) k Time Line a single consumption good. There are a continuum of unit measure of domestic entrepreneurs-consumers (henceforth, domestics) with linear preferences over date 2 consumption of a single (tradeable) good, also value and (ii) foreign financiers (henceforth, foreigners) with large consumption of the single good at the final date only. storage technologies so the international gross interest rate Production. all of their Domestics have no goods at date endowment is in the is and date 1. time-to-build aspect. Investments are 2. made at dates Creating k units of capital requires a date The function c(k) is assumed Agents have and 1, frictionless one. As we shall describe shortly, form of "international collateral" goods to produce, domestics must borrow and import goods from endowments who at date 2. In order foreigners. Production has a and output is realized at date investment of c(k) units of imported goods. to be strictly increasing, convex and positive, to guarantee an interior solution. We capture the normal churn of the economy, with with a simple Bernoulli process. At date of further investment 1, its implied domestic heterogeneity, half of the firms and go on to produce Rk (randomly selected) are spared units of goods at date 2 ("intact firms"). . The rest ('''distressed firms") experience a productivity fall reinvesting a fraction 9 < imported good, of k, in units of the 1 tor < R. This can be in offset by order to realize output at date 2 of: (r + 6A)k < Rk, where, A = R-r. Financing and Collateral In order to explore the financial problems that concern us we must introduce borrowing constraints on domestic firms. Before doing so, however, with a subtle date 1 issue. we deal Despite the linearity of preferences, insurance-demand arises as soon as There are financial constraints are introduced. contracts to consider. The one first principle sign contracts at date 0, two classes of insurance essentially with respect to idiosyncratic shocks. Firms could is in contingent on the realization of types, whereby resources were always transferred from intact to distressed firms. In reality these contracts are seldom perfect due to asymmetric information, its and in our model we capture this imperfection in extreme form: Assumption date 1 is 1 (Non-observability of Production Shock) The production shock idiosyncratic. The identity of firms receiving the shock But private information does not is rule out signing insurance contracts with respect to aggregate shocks. However, introducing these contracts would dampen gate shocks, but would not undo any of our main qualitative results. we only analyze uncontingent debt We endowment is all 1 the effects of aggre- Thus, for simplicity, contracts. assume that each domestic agent that are international collateral - at private information. e.g., is endowed at date with some date 2 goods the present value of export sector receivables. This Thus we make that can be pledged to foreigners to secure debt repayments. the extreme assumption that none of the output from domestic production is acceptable collateral to foreigners. Denote the amount of international states of the world at date occurs with probability the I h Tt 1, uj = 1 e — {/,/?}. 7r. collateral for a domestic as State Across all / Xiw. occurs with probability domestic agents, there There are two ir, while state h is less collateral in state than the h state, < X' f w< See Caballero and Krishnamurthy (1999. 2000b) for \)w. an analysis of contingency. Also, see the former for the slightly more general case (but identical in equilibrium) where foreigners hold domestic collateral from date to 1 XJw Since only amount. The is international collateral, foreigners will only extend financing effect of and therefore straint in the i-state Assumption the aggregate shock to tighten the international is and international 2 (Foreign debt Foreign lenders require international collateral repayments are assumed denote foreign debt contracted at dates ci" * do,f and < ^f w = promised repayments. 1 (in state ui), respectively. 1. These Let do j and Then, minjA^u;}, — "S. X'iw interest rate is pinned down at one by foreigners, as we do f. domestic interest rate (the only equilibrium price in our model) later the 1. f d\ While the international all uncontingent on the aggregate shock at date to be at date collateral) back to to this borrowing con- and refinancing options curtail production up may will see rise above This interest rate applies to assets which are valued by domestics but not by this value. foreigners. This asymmetric valuation is due to our assumption that foreigners cannot seize any of the goods from domestic production, while domestics can. The parameter A^ controls how much of this production is domestic collateral and represents the degree of development of domestic financial markets. Assumption 3 (Domestic debt and A collateral) domestic lender can only be sure that a firm will produce X^rk units of goods at date Any Let. excess production based on reinvestment at date L^ > date 1 1 must all u>, then domestic lending at satisfy, < Xd^jj + (XfW - < d0J - dij), domestic firms are identical at date Our assumption plays a at date 0. neither observable nor verifiable. denote the domestic (gross) interest rate in state <K4 Since 1 is 2. 0, < Xd 1. the domestic debt market role only at date 1, when intact firms is not accessed become domestic lenders to the distressed firms. Finally date we need to make a technical assumption on returns to date 1 reinvestment versus reinvestment, in order to ensure that firms do not saturate their budget constraint at date 0, A> R+r : > 1. l 2d{X f w) Our assumption on preted in a rise in the number the tightening of the international collateral constraint in the /-state can be inter- of ways. premium that source of the shock. This is a terms of trade shock, a rise in the international interest rate, or a foreign investors require for lending to emerging markets. We are agnostic on the Optimization and Equilibrium 2.2 The problem can be Date 1 solved by backward induction. Date problem. and foreign debt of of k decisions result in firms arriving at date At date do./- a firm that escapes the shock is The balance (I). w of rk units of domestic collateral and of d a firm that receives a shock 1, intact 1 with installed capital is distressed (S), while sheet of a domestic firm has assets units of international collateral, and foreign debt ./. Suppose that date choices of (A;, distressed firm in raising funds at date units is at date 1 have been made. do./) to alleviate Consider the problem of a production shock. Saving production its an investment that requires one unit of imported goods, and returns A units of goods 2. A Since the return on this investment of always exceeds the international interest rate of one, the firm will turn to the international debt market for financing. maximum, Xiw — do./, from this market. 1 in the Xjiv still reinvestment. its As long economy and pledge as A> domestic debt market. The L" the can raise at then the firm will have to turn have excess international collateral, a domestic collateral and import is able to aggregate the this to foreigners to raise resources for firm will borrow as maximum amount that can be raised, after exhausting foreign resources, We — do,/ this "credit chain," the distressed firm international collateral of the date > borrow from the intact firm against Through additional goods. k Since intact firms to other sources for finance. distressed firm can If, It much as it can (or needs) of funds (in units of import goods) is shall refer to this inequality as the domestic collateral constraint. We can then write the problem of a distressed firm (PI) V? =mMjj^ \» w s.t. (i) dfj f {iii) (ro) than liabilities) as reflects that date (z) 1 An in and (r + Ae)k-do,f-dfj-L»d» d + d ,/ + d^4 < Xfw + ±f& df f + d0>/ < XJw u 9 'k = df + 5? mf 0" < 1. (ii) Constraints + as, are balance sheet constraints (net marketable assets greater (ii) perceived by domestic and foreign lenders, respectively. Constraint new investment must be fully taking on debts of df ^ and d^ intact firm at date 1 . rf (iii) paid with the resources received by the firm at Constraint (iv) has only one decision: is purely technological. how much finance will the distressed firm. Suppose that the firm borrows import goods against its it extend to international collateral and lends x\_ d of these goods domestic market at the interest rate of in the Lu . Then, =max^ d V? (P2) X?kt d s.t. Date At date problem. in either the h or the I 1 can expect to find itself as aggregate state of the world. Thus is, (P3) max fc . do/ Z^h.n^U^ + Kn s.t. d,Qf < XfW c(k) = where i^ represents the probability that state Market clearing Equilibrium. + ^f<XfW .f a firm looking forward to date and either distressed or intact, the decision at date 0, + Rk + L»a% d - x% d u d j. occurs. the domestic debt market at date in 1 (capital letters denote aggregate quantities) requires that the aggregate amount of domestic debt taken on by distressed firms is fully funded by intact firms: u \,d n a l,a Therefore, market clearing, Dt d = Xl d (2) , determines the gross interest rate If. An u} (9 equilibrium of this i ,d% ,d% d ,x ?id ) u>s V< h f }, economy and date 1 decisions, (fc,c?o./) and w wG {'.'»>. respectively, and prices (L ) Decisions are solutions to consists of date the firms' problems (PI), (P2), and (P3) given prices. At these prices, the market clearing condition (2) holds. 2.3 Regions With the basic setup behind us, of the linearity in preferences we turn Let us begin with the case that 1, as stated in (PI). Since rates, the firm will investors. 1. Because and returns to reinvestment, the decision problems end up yielding corner solutions, and equilibrium at date to characterizing equilibrium at date into one of four regions. A > L > 1. Consider the problem of a distressed firm A exceeds both the international and domestic interest borrow as much as The maximum amount falls w it can (or needs) from the domestic and international of funds that the firm can raise \ fVJ-d0t f + —. is, Since L? > 1, —w from foreign investors and lend intact firms will import goods of Xj Then equilibrium to the distressed firms. these requires that, Solving, yields T" This is the first case. excess collateral Thus is In this scenario, it is f-i\ -d XfW (3) / easy to see that since transferred to the distressed firms, there total reinvestment is all of the intact firms full collateral aggregation. is, ff^k The second Xdrk - ~ = - d 0J ) u 2{\ jw case follow closely from the above expressions. Note that possible that this equation requires that ff^ > it is algebraically Economically this means that there 1. is sufficient collateral for all distressed production units to be restructured, and therefore w firms will choose 6^ = 1. Since there is excess supply in the domestic debt market, L = 1 (equal to the international interest rate). The less difference between these last than its international collateral. two cases We that in the second, the is economy reinvests can define the international collateral constraint as, 6 If k<2{Xfw-d (4) .f). the constraint binds the economy must be aggregating and therefore The is, UJ Z>' > final case is suppose that 9" 1. When when L^ < 1, all the constraint does not bind, is equal to one, because A^ is it of its international collateral, must be that low and actually Lu = 1. (1) binds. That but A^rfc < XjW — do j. In this case domestic distressed firms lack sufficient collateral to compensate intact firms for their international collateral constrained demand and the domestic the international spread, s*i, is let us define = L W -1. us define the domestic spread, s^ as, s% This Before describing the figure, as sj let Collateral depresses the equilibrium interest rate. Figure 2 illustrates each of these scenarios. Likewise, interest rate falls to one. = A - V. the difference between the marginal product of investment for a distressed firm and the interest rate that it pays to its lenders. It is the wedge between internal and external returns that typically arises in models with credit constraints. 1 i 1 L \ L= A \ L= \ > \ A \ \ \ \ N V L= L= 1 1 ' J = Panel (a) 1 Regions : and I Panel (b) II : Regions III and IV Figure 2 The supply curve It is both panels in is the supply of international collateral in the economy. horizontal at the international interest of and then collateral constraint binds, while that on the right is firm. X }. The demand curve Demand constraint begins to bind. for funds upto the point that the international 1 turns vertical. it 1 First, the horizontal part of the curve traces a distressed L — falls The amount for The panel on the left represents A^, funds can be in one of two situations. out the marginal product of reinvestment for below this curve when the domestic collateral of domestic collateral for a distressed firm is, A d rfc Thus as U° starts to fall the collateral loosens. This traces the diagonal The demand curve in worth more and the collateral constraint gradually downwards. both panels more constrained demand curve is is illustrates a case of higher and lower A^. The lower and a lower A^, representing less domestic financial market development. Proposition Proposition 1 1 summarizes the main (Regions). results up The economy can to this point: be in one of four regions pending on which of the two collateral constraints, (1) and 10 (4). bind. at date 1. de- • Region I occurs when both the international collateral constraint (4) and the domestic collateral constraint (1) are slack. In this case, both international and are zero • there economy downsized. s% is > 0,sf = < 0,6" IV = and domestic spreads 1. slack but the domestic constraint some occurs are binding. when some projects being 1. The economy aggregates aggregate resources and Region 0,6 U fails to aggregate all of its collateral resulting in straint is slack. International spreads all jump of to its A — binding but the domestic con- is 1, while domestic spreads remain however there collateral, = 1 projects are downsized, s ^ both the international constraint sj 0, and > is insufficient 0,6^ < 1. the domestic constraint Both, international spreads and domestic spreads are positive and projects are downsized, s^ > 0,Sy > < 0,6^ some 1. Discussion of main assumptions 2.4 We s^ Region III occurs when the international constraint at zero. = International spreads remain zero, however domestic spreads are positive binding. as the • = Region II occurs when the international constraint is • is full project completion. s% have assumed a friction that prevents a Investment at date to his output from another domestic. fully up produces rk goods at date 2, domestic entrepreneur from borrowing and depending on the realization of shocks and reinvestment, an additional A/c of output. In a well functioning domestic financial market - if i.e. there were no frictions in borrowing from another domestic - both the rk and the AA; of output could be sold to obtain funds investment. In assuming that only Xjrk for is observable and verifiable, claims sold to another domestic to this amount. is not unusual. It is most similar to the limited 3 The modeling (1997) assume that output Our X d rk is is akin to their collateral. restricted of this borrowing constraint collateral constraint of Kiyotaki (1997), or the limited enforcement constraint of Moore we have Kehoe and Levine (1993). and Moore Kiyotaki and not verifiable, but that physical collateral (land) Holmstrom and Tirole (1998) develop a is. model with an ex-ante unobserved effort choice where a fraction of output has to be paid as a rent to the entrepreneur so that he exerts it effort. While our model does not have ex-ante moral hazard, shares the feature that a fraction of output (i.e. Afc) can never be promised to a lender. Indeed, any model with borrowing constraints will share the feature that future output 3 Purely from is a case Aj = modeling standpoint, In Caballero 1 will fraction of unpledgeable. developed domestic markets. In a collateral. some it is worth pointing out that Xd perfect, capital = 1 does not correspond to market, one would expect that and Krishnamurthy (1999) we model domestic correspond to the perfect capital market case. 11 all of Rk would collateral as \d(r + #A)fc. fully count as In this While the modeling of the domestic borrowing constraint ature on credit constraints, the and foreigners is received. In in standard fairly all, crisis, many there used is is the liter- the borrowing constraint between domestics it can from empirical support for this assumption. For example, Mexico, its oil revenues as collateral to back the liquidity package that instances the bias is directly justified it by mandates on foreign institutional investors (e.g. limits on real estate investments, see Blommestein, 1997). the assumption in unusual, rk cannot be borrowed against from foreigners, while domestics. First of during the 94-95 asymmetry is most similar to that of the sovereign debt literature. 4 5 Theoretically, ' For example Eaton and Gersovitz (1981), Bulow and Rogoff (1989) build models of sovereign debt renegotiation around the question of what international lenders can threaten sovereign countries with the event of a default. In this literature, debt is typically taken to be occurs when some is in limited by international collateral, which fraction of exports. In Atkeson and Rios-Rull (1997) a becomes tighter this international collateral constraint crisis On for a country. the other hand, the sovereign debt literature typically just imposes international collateral as an aggregate constraint. We individual agents in the take a microeconomic perspective by assuming that economy who can trade Wasted international 3 The only one of the regions in the previous section We shall I. Constraints are assumed to arise in the in region II, while in the next section, Of course there are important exceptions I we regions of most interest. In this section (1997) for systematic held by foreigners. where no credit constraints were binding henceforth assume that in the h state, the economy finds region 4 among themselves and with it is collateral is I. w we state. shall There are (as assume that the we I shall itself in make region clear) state puts the two economy shall discuss region IV. (e.g. "too big to fail" utilities), but see, e.g.. Kang and Stulz Japanese evidence showing that, for small firms, those that are export oriented are favored by foreign investors. See, e.g. Blommestein (1997). assets considered highly illiquid or exposed to by foreign institutional investors. exchange for a discussion of risk are generally how real estate and other avoided (sometimes by mandate) Interestingly, the very few exceptions to the sovereignty principle, by which the rating on debt issued by a country's corporate sector is bounded from above by that country's government debt rating, are for companies which belong to the export sector. °The September 1998 report on the Asian crisis by the World Bank, describes firms that borrow foreign currency as "predominantly large exporting firms with ties to foreign companies, better adjusted to the crisis..." (box 4.3, page 62). The 1997 Industrial Survey in in and they have Thailand reflected that of those firms that borrow in foreign currency, 88 percent export, have an average of 818 employees, a debt- equity ratio of 3.12, a relatively high capacity utilization and optimism during the respectively. The same statistics for firms that do not borrow in foreign crisis. 70 and 37 percent currency (75 percent of firms) are: 46 percent, 139 employees, 2.36, 61 percent and 19 percent. See Dollar and Hallward-Dreimeier (199S). 12 Micro-economic credit constraints 3.1 economy In region II the fails constraint on a domestic firm to aggregate is, d(j Interestingly, there eral. is essentially Adding one unit The borrowing international collateral. its + ttt d < + Xjw - X d rk d 0J (5) . no difference between domestic and international of domestic collateral to a distressed firm's balance sheet equivalent to adding one unit of dollar collateral. Alternatively, even collat- would be foreigners accepted if the A^rA; as collateral for international loans, the outcome would be the same. Thus, the aggregate collateral constraint does not play any role in this economy. To us this case represents the situation of credit constraints that developed economies. At the micro-economic to borrow to meet their investment needs. There is is most common in that have poor collateral are unable level, firms a wedge (s^ > external returns. Bernanke and Gertler (1989) and Kiyotaki and 0) between internal and Moore (1997) are models of this environment. One if to could also interpret the wasted collateral region as a "credit crunch." For example a banking sector was responsible for evaluating the collateral of distressed firms in order make loans to these firms, and this banking sector was compromised so that loans were cut back, again the economy would up with Sd > fail to aggregate Holmstrom and Tirole (1997) 0. of their credit crunch There are two model of its discuss this case. interest rates loans are fully collateralized, thus they are default free. rate of return on fully collateralized lending - is (i.e. A^ is have already noted the wedge also define a credit spread as the default collateral. If the face value is focusing on fully collateralized loans we is our purpose bad — (or in one. If -^ is 1. we were effect that in the / is all the to allow risky the interest rate on these This could also be interpreted lending of s^ = A— L. We could to distressed firms with poor set at Afc, but the loan is collateralized This term also increases as Ad isolate the effect that lending to firms not as good) business, while ignoring the realistic Comparing across the same, because return to a variant and spreads. In our setting premium on lending on a defaultable loan only by Xdi'k, then the credit spread collateral We shall falls), loans would rise to reflect the growing chance of default. We and we would end Riskless interest rates - that L, which loans with default, as domestic collateral worsens as rising spreads. collateral in section 5. ways to think about different all — but falls. By with poor less central for poor collateral induces default premia. /; and / states, state, despite the lack of collateral of the investing firms one can see that riskless interest rates are the marginal product of investment being high, the means that 13 effective investment demand is low. Low investment demand, low interest rates, and high interest rate spreads are of a developed recession (e.g. Japan). problem and Efficiency Date 3.2 economy common symptoms Let us now briefly characterize the efficiency aspects of the decentralized equilibrium. Among other things, this will help us understanding more fully the precise nature of the pecuniary externality described in section In both, h and an intact firm's date 2 profits states, I 4. V? = Rk + Xfw-d In the h state, the distressed firm achieves V* = On the other hand, in the I - l These last four project completion so that date 2 profits are, Rk-k + \ hf w-d0J = l Vs rk + (A j. . state, since the collateral constraints bind, 9 k This gives us that profits full are, + \ fiv — do,/. l X^rk are, l l)6 k + X\iv - d 0J = rk + X d rk{A - problem expressions can be combined in the date max MOi/ (P4) £ we{ ,, fc} 7r + A(X f w l 1) do,/). for a firm: w V' V h = X f w - d 0J + Rk - fc/2 V = ^(X f iv - d0J + ^k + Xd rk^=± l s.t. l 1 ) Since c(k) is strictly c(k) = do./ < XfW d ,/ convex and the objective is linear, (P4) defines a unique optimum. Proposition 2 (Financial market development and "Underinvestment") A decrease in A^ has the following effects on equilibrium: vestment Proof: at date 1 falls (8 falls), (ii) (i) Return to the demand curve from left k, firms reduce investment in at date panel of figure 2, Fixing date decisions, ink. and run the experiment of shifting the the high to the low A^. Alternatively, see the debt constraint of See the appendix for the algebra. with Firms (i) The idea is that since A^ enters only recognize that domestic investment therefore reduce date investment. 14 is V 1 , less collateralizable in (5). (ii) multiplicatively the /-state and The underinvestment result Kiyotaki and Moore (1997). the is It is collateral constraints are imposed. same Bernanke and Gertler (1989) as that in underinvestment relative to a The inefficiency is first or best in which no that distressed firms who have a high marginal product investment (A) do not have the resources to take advantage of this investment. Its also easy to see that welfare must be increasing in A^. The reason we used quotations relative to the first best, they are these same firms beyond the distressed We in the proposition still constrained is that while choices are inefficient efficient. A central planner, subject to no mechanism to persuade foreigners and intact collateral constraints, also has firms' collateral. consider a central planner who makes choices to maximize the equally weighted sum of utilities of the domestic agents, subject to the constraints imposed by assumptions 1 — 3. Since domestics are ex-ante identical, this objective amounts to maximizing the utility of any domestic firm at date 0. The only complication is imposing the collateral constraints on the central planner. Definition 1 (Constrained Optimality) Let the solutions of (P4) be (k,doj), and The competitive equilibrium is let the welfare corresponding to these choices beu. constrained Pareto optimal if a planner who directly makes choices o/(£;,do./), subject to the international collateral constraint of doj date but lets debt markets clear competitively at date By 1, cannot raise welfare aboveu. allowing markets to clear competitively at date international collateral constraints at date choose (k,dQj) subject to the date 1. < Awe. Thus the 1, we impose the domestic and central planner's program is only to international collateral constraint. Proposition 3 (Constrained Optimality) The competitive equilibrium Proof: By inspection. solutions, (k,doj), are constrained Pareto optimal. Note first that prices (L w ) do not appear anywhere in (P4). Then note that the central planner's program must be identical to (P4). 4 Aggregate Collateral Constraint and Underprovision In the wasted collateral region, the fact that the collateral has market is that collateral is The only emerging economies. Indeed cost of having an undeveloped domestic not aggregated properly, resulting in lower investment and output. However, limited international in international no consequence since the constraints on domestic and foreign borrowing are substitutable with no effect on outcomes. financial economy has limited aggregate collateral crises in these 15 seems to be an important constraint economies are times when interest rates rise rather than fall - a symptom constraint (see proposition that our model associates with a binding aggregate 1). we show that the domestic In this section collateral credit constraint is even more costly aggregate international collateral constraint also binds. In particular, we show if the that there is a dynamic effect whereby agents undervalue international collateral, overborrow at date 0, so that at date 1 they have a constrained efficient less international collateral (relative to outcome). Effectively, a low A^ interacts and tightens the aggregate collateral constraint so that the negative shock causes investment and output to assume that the h state leaves the economy constraints bind, while the constraints bind. I is at date 1. = Rk + \)w - while the distressed firm has date 2 profits V's state, the premium on I h \f domestic interest rate of l) IV where both collateral in region d 0J and distressed firms are as in the . = Rk + L l w-d0J rises L > their lending to distressed firms as {X l f . above one. Thus intact firms earn a 1. Profits are, iu-d0J ). For the distressed firm, the cost of the higher interest rates less, collateral of, = Rk-k + l Vl worth where neither of the the intact firm profits, 1 I economy state leaves the V/ In the in region In the h state, the profits for intact previous section. That is much too International collateral undervaluation 4.1 We fall lowering reinvestment. V;' = The that their domestic collateral profits are, + (A - rk is + l l)9 k (X l f w - d 0J ). where, e i k= ^± +XfW -do,f. l (6) Li Since a firm can be distressed or intact with equal probability, profits in the I we can write the expected state as, V 1 = —^k + X'fW-doj (7) 1 +l(A-l)0 k+ -(L -l)(\ f w-d 0J l l The by date first line of the RHS in (7) reflects l ) the expected profits, in the investment net of foreign debt contracted at date 16 0. / state, generated In particular, this line corresponds to the expected wealth assuming that to The fail. value of saving these production units probability of one-half, the firm distressed is units, directly earning the internal return of half the firm distressed production units are allowed all is intact in which case A and against its collateral. difference return of L l between the internal return of A for the intact firm see this, let us construct for a central planner. two is own production With probability one- international collateral and lends its to the distressed firm, thereby earning the domestic interest rate of The L l . for the distressed firm, and the external the source of international collateral undervaluation. different versions of To construct the former, V 1 one ; for individual firms we simply yields, V To construct the = 1 ^ substitute into (7) the expression + i(A + L<)(A<x,-do./) + central planner's version, which We know must be equal to the l = we Substituting this expression into (7) 2{X l f w-d V 1 * , we substitute instead the that in aggregate, reinvestment j). find, V * = R±J-k + A(\ f w-d 1 difference This total international collateral of the economy. Thus, 9 k The (6). ^(A-L') we denote by equilibrium collateral constraint on reinvestment. To and the other reinvestment implied by the microeconomic domestic collateral constraint, for With line. its borrows to save it borrows against it captured in the next is l j) between these expressions highlights the undervaluation V-V" = At a given equilibrium, V 1 and V 1 * effect: i(^-*^) must be equal. But it is (8) apparent that individuals and the central planner value a marginal unit of international collateral and domestic collateral quite differently. In particular: • Individual firms value domestic collateral more than the central planner. than the central planner. • Individual firms value international collateral less • The divergence with declines rises 6 Xd It is falls. in these valuations are in A^. proportional to the domestic spread, sd , which 6 easy to show that the term in parentheses in (8) does not Starting with a local argument, take do./ (and hence fc) (fully) offset the as given change in the spread as and reduce A^; then L must fall proportionally with X d (see (3)) so their ratio remains constant and so does the expression in parentheses. Now. rise in only equilibrium do,/ rises so the expression in parentheses declines with a if the distortion increases, the rise in the spread parentheses. 17 must be fall in Xd- But since larger than the decline in the do,/ will term in At the aggregate is level, the central planner only values international collateral. because international collateral and at date 1 is microeconomic that can be used to attract foreign investment, all the binding constraint This However the inflow of foreign investment. is at the both domestic collateral and international collateral can be used to level, secure financing. This is the basic tension between the individual and the central planner's problem. A wedge between the positive domestic spread heightens this tension by placing a and private valuation A return of at date at date On a return of one. L l . The unit of international collateral generates a social while a unit of domestic collateral generates a social return of one At the individual 1. return of 1, A of collateral. social level, for an intact firm, a unit of domestic collateral generates the other hand, a unit of international collateral only generates a difference l between social and private valuation of sd —A—L l results in undervaluation of international collateral. Domestic underdevelopment prevents collateral demanders from transferring the (distressed firms) collateral providers (intact firms), since the As a result, at date 0, firms will lenders at date marginal value of collateral to the demanders simply have insufficient collateral. undervalue international collateral since they will not share in the 1, full full collateral. they are the surplus of reinvestment. Underdeveloped financial markets (low values of A^) result and the systematic mis-valuation of if 7 The in high domestic spreads we have described externality is not of the traditional Bardhan-Harberger type, where individual borrowers do not internalize the fact that the country faces an upward sloping supply of foreign loan. Indeed, in our setup the economy does face a very steep international funds supply, for the country rationed after some point, but the externality arises only when domestic financial is markets are underdeveloped as well. Date 4.2 Problem Let us now state this result on the undervaluation of international collateral and pendence on the underdevelopment of domestic first write down the problem central planner's who chooses (fc,d ,/) The program ' program and for a firm at At the individual firm a return of A. On same way At the individual firm collateral, resulting in too shall a central planner 1. The the necessary counterpart of undervaluation of international the other hand, a unit of domestic collateral excess return of zero. i.e. level, for a distressed firm, a unit of international collateral still generates output of A, providing a return of domestic as in the last section, follows closely from the previous derivations. date is We de- and then write down the markets clear competitively at date Overvaluation of domestic collateral collateral. markets more formally. for the decentralized equilibrium, in the lets financial its s'd > 0. At the is discounted at the interest rate of L' and social level, level, this mis-pricing much domestic domestic collateral generates an causes firms to overvalue the Ajrfc of collateral relative to international collateral. 18 generates expected value to being in the high state Vh = Then V using the 1 that we - X'fiv + Rk - do,/ fc/2 just derived, yields the firm's program: maxuo, (P5) is, E^{i.h}^V^ V h = X f w - d0J + Rk- fc/2 y' = ^±r/c + I (A + L')(A/W' c(fc) = d ,/ l s.t. < do,/ To arrive at the central planner's (P6) + *,/) ^(A - L l ) -^/^ program we use EW max fcdo/ €{Z,fc} V 7t instead, " V,, and note also that Vh = V * h ' = A^tu - d j + Pfc - fc/2 y<* = Bp-k + A{\ fW - do, f c(k) = d ./ V" s.t. 1 * l ) < do,/ A/tu Proposition 4 (Constrained Optimality) Let (fc*,d5/) These solutions are the constrained Pareto optimal date solutions to (P6). fee choices of the economy, (a) (b) (k*,d,Qf) are independent of the strength of domestic financial links, Ad- Proof: Part (a), as before. Part apparent from inspection of program (P6). Since (b) is none of the constraints depend on the value of program A^, the solution to the will not either. The second part of this proposition planner's choices are invariant to function of A^ we know moreover the distortion is particularly interesting because However A<j. since the domestic spread . (fc, will program (P5) in do./), are constrained ment by perturbing says the central is a decreasing that the decentralized equilibrium will be a function of be decreasing the case h when L = 1,L > Pareto inefficient. these decisions to (fc',d A<f and in A^. Proposition 5 (Undervaluation of International Collateral) tions to the it A 1 and l sd > Let 0. (fc, Then do,/) be solu- the decisions, central planner can effect a Pareto improve- *), where d , < do./ (hence k' < k). Proof: see appendix The proof Note that follows closely from the logic laid out in the previous section. the only difference between (P5) and (P6) domestic spread, s ff , equals zero, there is is in the expressions for V 1 and V . When the no difference between the central planner's and the decentralized solution. In this case, the market equilibrium 19 is constrained Pareto efficient. However, as A^ some point at falls, must.be that it the social and private value of collateral, resulting > sd and there The next the inefficiency. in a divergence in is proposition formally states the dependence of welfare on A^. Proposition 6 (Financial market development and Welfare) equilibrium, welfare is increasing in A^ to In the decentralized In the central planning solution, welfare . invariant is Arf. Proof: see appendix Discussion 4.3 Unlike region in region IV, II, interest parity condition breaks XtW lending capacity of into a fall in (L little — 1 > and are therefore unable to arbitrage more notation, the exchange rate l in region II, while s d III, this > l sd > maximum this interest mapped All of these are aspects of and the international l is binding, s d = is may seem enough in is is we the case considered / sovereign-constraint no externality. counterintuitive that the pecuniary externality arises because the slack, Indeed, though 0. binding. This Atkeson-Rios Rull (1996) and other representative-agent models, where there is region corresponds to the case where domestic financial markets are perfect while the international constraint e.g. collateral the international constraint 0, in region III while the international constraint have not focused on region rise 8 The 1. could also be rise in interest rates when externality arises only Thus constraint binds. It the Z-state at date because foreigners reach their 0) asset prices or a depreciation of the The pecuniary in, rise in emerging markets. crises in and down l to domestic firms, With a rate differential. domestic interest rates - crisis l i.e. sd > and the domestic 0, L l does not interest rate does not reflect the marginal product of investment. But lending spreads are typically higher than in normal times - so that the s d implication seems borne out. Part of the reason the result is in crises l counterintuitive is that in our model occurs through the price mechanism. collateral constraint is surplus transfer between distressed and intact firms all The distortion in this transfer measured by the domestic spread. In reality, due to the domestic some of this limited transfer occurs via non-price mechanisms as well - quantity rationing, default, extortion, etc. 8 The equity value of domestic firms at date rise in L"' one may causes this to proceed to do long as the asset demand is is fall. so. 1 is assets Our model does not We could introduce also domestic collateral - determined by domestics - the a minus liabilities, which is -£zr + tf w - define an exchange rate, but their arc two nominal asset at date 1 and price this asset. do./- The ways that Then as which seems reasonable since we normally think that money rise in Alternatively, one could introduce non-tradeable V° would also cause a and tradeable goods foreigners did not accept non-tradeable goods as collateral, exchange depreciation. 20 we would at fall in the nominal exchange rate. both dates 1 and 2. and as long as arrive at a similar result on the real L l As a a catchall for both price and non-price transfers. is also exist, then L result, if non-price mechanisms understate the price response, and will not correspond perfectly to will the interest rate. In the wasted collateral region the only effect of low \ d while in region IV, the only effect of low A^ would be tional collateral than is point. It IV would be blended. At region II and region and the undervaluation The result elastic all both the points, Can the what to eliminate the inefficiency? If not, We deal with the second We in which case collateral aggregation would be present. existence of the externality begs two questions. among themselves less interna- up to XfW and completely model a smoother supply curve, possible to is with because of a modeling abstraction. have taken the supply curve of foreign funds to be perfectly beyond that 1 date 2 output. However, effects lead to lower the sharp separation between these two effects inelastic poor collateral aggregation, that firms arrive at date is Both efficient. is is private sector contract optimal government policy? question in Caballero and Krishnamurthy (2000a), and shall return briefly to policy issues in the conclusion. As far as the first question, there could be mechanisms around the previous section, insurance contracts signed at date But we firms would work. rule these out to transfer all As inefficiency. in the liquidity to distressed on grounds that the type of firm at date 1 is unobservable. Another way to try and solve the problem all firms got together the state / However would be this is in set at L = A. Then — cio./) on region IV, A last ''fix" interest rate date the price at date incentives it must be that is like A^r/c some < A(X jiu l -ofo./). 1. on any loan contract their loans, while borrowers only to agree ex-ante to transfer - but this to Imagine that at date would be aligned with arrangement would be budget infeasible at date receive A(AyU> and and agreed that the is 1 since lenders The only way around in efficiency. must have A^r/c of domestic 1 in total collateral, this problem of the domestic collateral from intact to distressed firms the insurance that we have mechanism worth discussing ruled because of unobservability of types. a credit line is arrangement akin to Diamond and Dybvig (1983)'s deposit contracts. Let us denote the privately optimal amount of international collateral to be held in the to be , and that drew its C of international credit line at date would receive while state as C* where we know that C* > collateral 2 I if AC* > A^r/c. Then, if C= C Now . AVu; — do./, and suppose that collateral to the bank, 1 all the socially efficient firms gave A d rfc of domestic with the arrangement that any firm would receive C* and any firm that drew A^rfc > C* it is amount its line at optimal for intact firms to wait X^rk distressed firms would draw down C* at date I. till date date 2, Since in region IV, A>^>1, choosing C* > C makes the arrangement is 21 budget feasible, and can improve efficiency. The problem with fragile — the arrangement is that it is informationally intensive at date same reason that Diamond-Dybvig for the is Thus if is L* which result firms in the Alternatively, if the firm is if they are L* to anyone delivering international collateral. As a banking arrangement draw down their credit distressed firms, which they are is L > more banking arrangement, a firm has the incentive to opt out of banking and invest on their own. In this case, distressed they offer a return of First is less the private sector was choosing C, their incentives would be even distorted. Second, holding fixed every other firm joining the firm. and very fragile (see Jacklin (1987)). note that the effective interest rate offered by the bank that uses C* than L. 1 intact, happy it simply offers to lend at The only way to accept. line and lend to the rogue the bank rate of L* to to rule out this deviation to enforce that firms can contract only with other firms in the banking arrangement - a possibility that Each seems unlikely. of the above solutions rely on some form While of insurance across firms. in the above paragraphs we have appealed to theoretical arguments to rule out such insurance, the short answer to the question of does the private sector contract away the externality that empirically there which there is is is possibly partial insurance, but our model investigates the case in none. 5 Disinter mediation The results of the last two sections can be summarized [loosely] as, in the wasted collateral region outcomes depend separately on domestic and international collateral; when the ag- gregate collateral constraint binds as well, both forms of collateral interact, so that outcomes depend on international this section we collateral, which effectively a function of is domestic collateral. In discuss the converse case in which the shock to A/ feeds into the available domestic collateral — i.e. the latter is effectively a function of international collateral. Collateral Aggregation 5.1 Distressed firms access the international collateral of intact firms by borrowing from these firms against their domestic collateral. is that this collateral aggregation is The done implicit assumption in the preceding analysis in a perfectly functioning public debt market. Distressed firms issue debt claims in the domestic market secured by domestic collateral. Intact firms issue debt claims to foreign investors secured by international collateral. They then use the proceeds from this issue to purchase the debt claims of the distressed firms. In emerging markets, liquid domestic debt markets are the exception rather than the rule. Invariably, the financial system is bank based - for good reasons: lack of investor protection and the necessity of monitoring to alleviate asymmetric information places banks at the center of the financial system. Banks issue claims to foreign investors against balance 22 sheets that are partially backed by international collateral - both of the distressed and the intact firms. These funds are then channeled to the distressed firms. Implicitly, the intact firm extends credit to the distressed firms against their domestic collateral. But immutable debt markets of the previous unlike the experience sharp falls, prices and real activity. real activity and is This endogenous disintermediation process and asset prices the early 80s. crisis, crisis. In this section system. we sketch There is a Intact firms at its worst Mexico during the tequila model whereby all no domestic debt market. from banks. To attract these funds, banks rate. And crisis, it is become the our model - in plays reminiscent and Chile during depositors. aggregation at date 1 is done via the banking Distressed firms in need of funds take loans offer deposits at They mortgage a market determined interest their international collateral to By these transactions, the banking system serves to aggregate collateral. This banks it Financial Bottlenecks foreign investors and then deposit these funds in the banking system. of in asset feedback into its 9 The Banking System: Amplification and 5.2 distress, the conventional wisdom well. Arguably, some form of fits of Indonesia in the recent Asian crisis of asset prices weakened, triggering further declines a role in virtually every emerging market's external the debt As banks enter banks themselves run into trouble. economy's ability to aggregate collateral when sections, we do not provide an explicit microfoundation for intermediating is the only role the existence of intermediation. Consider a representative bank Balance Sheets. measure). We shall assume that entering date in 1, a competitive banking sector (of unit the bank has assets consisting of loans to firms backed by domestic collateral, and no liabilities (for simplicity). 10 market interest rate on loans of L", the value of capital (entering date in units of dollars) in the bank 1, Then given the is, w *=£• The net worth (assets minus to reflect the additional liabilities) bank loan liability: X1 W °See Gelos and Werner (1999) liberalization period. Among for a of distressed and intact firms need to be modified rk — A + ~jp~ ~ d °J study of lending practices by Mexican banks during the post- other things, they document the significant role played by banks in lending to manufacturing firms without access to foreign funds, and their reliance on domestic collateral. They argue that this mix contributed significantly to the collapse of the banking system during the 94-95 crisis. '"The purpose of this section is to highlight, the potential date 1 bottleneck brought about by the deterioration in banks' balance sheets. There arc several interesting date issues discussion but which would lengthen this section substantially. For example, one sign contingent contracts with borrowers and depositors 23 which merit an extensive may ask why banks do not Without further assumptions, the preceding case of banks Capital Constraints. to that of public debt markets with Ad equal to one - now the banking system i.e. is a is identical We veil. introduce capital constraints that limit the capacity of the banking system to aggregate collateral. At date 1, a bank takes on debt from intact firms of d\ d and makes loans of x\ d to the distressed firms - on and loans, in units of face value of date 2 goods. Let all Ld both of these are made at the single market interest goods at date 2). We is (x'j If , — d assume that capital constraints represent the interest rate no other constraint is present, u and the expected date rate of L represent the deposits' interest rates. 2 repayment to the bank from this operation Lw d\ d )L? (in units of face value of restrict the size of this operation. In particular, #>a(A + 4 d (u;)), < a < where value of x\ d there is 1 is n (w). (10) the capital that banks must hold against making loans with date 2 face constraint binds, If this Lx L but equal to is still Lrj falls to one since an excess supply of deposits but a scarcity of loanable funds. Taking as given the market interest rate (on loans) of L"', the problem of a bank at date 1 is, W <%>a(A # > a(A + xx\bldd (u)) (i) dbQf 4 <f + [L" (L- objective of the bank reflects profits w of L and taking deposits of d\ d on banks. Constraint must be make all from making loans oi x\ (ii) reflects relegate it Banks to the appendix. while in equilibrium L u will behave exactly as binding, the problem is (L£ - l)d blA (u) — LD the date d (u>) at the interest rate Constraint . 1 {%) is simply the resource constraint: funds loans. Since the formal analysis of equilibrium we W (w) at the interest rate of capital constraint raised to - >0 (a) The l)x>» - - A- ^ s.t. MA M nrnx max <dMi<>) \ is very similar to that of the previous sections, will lend as when demand much for funds in the previous sections. is as they can less whenever L u than loanable funds. In fact, as long as constraint {%) entirely analogous to that of the previous section with Ad = > 1, Firms is 1. not To keep matters simple, we shall proceed under the assumption that the domestic collateral constraint does not bind - this 11 is the case that is derived in the appendix, and is the case In practice, capital adequacy requirements are based on both assets as well as liabilities. For example. BIS standards assign capital requirements to sorted (i.e. common stock, preferred stock) different assets held and weighted bank and hence ensure that the capital requirement is to by banks. The 24 the bank are met. Capital requirements can be justified from principles on the basis of moral hazard within the banking sector. example. liabilities of determine the amount of capital held by the first See Holmstrom and Tirole (1997), for ' that is regions, Panel reflected in the figure. (i) and (ii), There are two (a) in figure 3 depicts this scenario. which are distinguished by whether or not the international collateral constraint binds. 1 A f * L= A It \ L= A \ \ \ \ L= 1 J L= 1 A 1 1 1 » ' ' ' e„=i Panel The demand from : new interesting the economy can (a) fall Regions (i) loans which yields a region is high. then interest rates Panel (b) (ii) (iii) is the capital requirement (iii) or (iv) depending on now how line in figure 6 (b) equilibrium: loan if (in) and (iv) Equilibrium with Banks when Conversely, that Regions 3: demand loan supply rise to ration the scarce ingredient to highlight : Figure The dashed distressed firms. low and output and cases arise into regions e n =i is is (i) does bind. In this case tightly it binds relative to corresponds to a supply of fully satisfied, interest rates are constrained by capital requirements, supply (dotted line, region (iv)). The key the supply curve for loans bends backwards at the point where the capital requirement binds. This occurs because the value of banks' capital when falls interest rates rise (see equation (9)). The backward bending nature differentiates it from region IV of supply plays a significant role in region (iv), in section 2. While in and both cases an aggregate collateral constraint and a microeconomic capital requirement bind, in the banking-intermediated case there is wasted collateral, in to the distressed firms. full aggregation. the sense that not Equilibrium is at point all excess domestic resources are channeled A rather than B, where the latter reflects Constrained banks become a financial bottleneck, which bring about .''. simultaneously the worst of each scenario described in the previous sections: sharp declines in asset prices coupled with collateral waste. Multiple Equilibria 5.3 The rise in domestic interest rates in region (iv) is not only a symptom of the crisis, it is also a cause of the crisis. L= A Figure We 4: Multiple Equilibria with Banks illustrate this in figure 4. causes the rise in interest rates. As we described above, the contraction The fall in in loan supply domestic asset prices amplifies the impact of the crisis by deepening the credit crunch caused by banks' distressed balance sheets. 12 But it is easy to see that the feedback between asset prices and feasible intermediation brings about the possibility of multiple equilibria. '"'This amplification prices is and theirs lies in fall in is asset prices, on the supply side and Moore (1997) similar in spirit to Kiyotaki in that a fall in asset Moore the on the demand side - constrained demand reduces the productivity of assets, causing and further constraining demand. However, - constrained and further constraining supply. in is the identity of the agent with the crucial financial constraint. In Kiyotaki and financial constraint the mechanism reinforced by a tightening financial constraint. However, an import difference between our approach supply causes interest rates to In this sense, our model Krishnamurthy (1999). 26 is in rise, our model the key financial constraint is causing bank capital to be compromised, closer to the amplification mechanism studied Points (A) and (B) in the figure represent two equilibria which are distinguished by low and high interest rates, non-binding capital requirements (A) (C). Point (B) is also a possibility in which interest rates rise to constrain loan supply to exactly meet demand. While in both (A) and (B) The equilibrium so in (C). with < A(j 1 Final (C) is Low production units are saved, this all is not Pareto inferior to that of (A) and (B). More generally, or a concave but not rectangular Pareto ranked. 6 in interest rates, credit crunch demand interest rate equilibria are more function, equilibria can be strictly than high rate ones. efficient Remarks This paper has presented a model that highlights financial factors behind crises in emerging markets. While we are not the first to point out financial underdevelopment can lead to wasted falling asset prices First, we some of these factors —in particular that collateral, as well as to the possibility that can lead to disintermediation are able to study the effects of domestic — our approach is and international novel on two counts. financial constraints in a simple unified framework. Independently, both sets of constraints seem meaningful in the context of emerging markets, and appear in different forms in the literature. We have found that distinguishing between domestic and international collateral, and understanding and when they interact, is useful in thinking through crises. Second, market underdevelopment, financial in a dynamic context, how we show that domestic will lead to the undervaluation of international collateral. We think that the collateral undervaluation result through precautioning to a number cessive short (i.e. is particularly helpful in thinking date 0) questions in emerging markets. Observers have pointed of vulnerability factors - balance sheet maturity mismatches caused by ex- term debt, currency mismatches caused by contracting foreign currency debt, shortages of public and private reserves, to name a few. Yet there has been little said about why firms make choices that lead to such vulnerabilities. In Caballero and Krish- namurthy (2000b), we ask the question of why firms, knowing the sheet mismatches, choose to contract foreign currency debt. eign currency debt that if is We show that contracting and choose excessive dollar liabilities. 13 will our results points out that vulnerability fies 11 is is undervalue international Indeed we think that a number of these vulnerability factors can be restated as ones that reduce international collateral, The for- akin to contracting away international collateral. Thus our result domestic financial markets are underdeveloped, firms collateral possibility of balance and thus structural to emerging markets. results are also helpful in providing policy guidance. First of all the model identi- the primitive behind the incidence of crises as the shortage of international collateral. We also connect domestic financial market underdevelopment to the reluctance of foreign investors to enter the domestic lending business. 27 Purely from an accounting standpoint, by sorting on their effects on international collateral, the model helps us to classify and order the different vulnerability factors that others have More pointed out. interestingly, since the collateral undervaluation result externality, a natural line of inquiry The policies that prescriptions of (2000a), emerge are inflows. Since the we Pareto losses. in the design of policies to alleviate the externality. ex-ante ones -- monetary policy during the date we study the tation, all is stems from an i.e. precautions at date 1 crisis, fn 0, rather than Caballero and Krishnamurthy effectiveness of sterilization as a policy response to date model motivates both the need are able to characterize when for policy as well as policy leads to Pareto gains, models its and when capital implemenit leads to 14 There are a number of related precautioning policy questions that the framework provide guidance on. will For example, the question of which of the private or public agents should hold international reserves, or the differential effects of domestic reserve requirements and foreign framework liquidity requirements. will And, once extended to incorporate nominal shed light on the role played by financial underdevelopment in the design of optimal exchange rate arrangements. 1 Our analysis is We are currently working on these extensions. guided by the effect of policy on international collateral - does the private sector's reaction to a policy lead to a gain or loss in international collateral. when the government bond market may lead to a fall assets, the in the is illiquid, sterilization policy A result which we find striking (swapping reserves for is that government bonds) spread between corporate lending rates and government bond rates. This causes the private sector to overborrow from foreign lenders at date dictate. 28 (I the opposite of what optimal policy would Appendix 7 Incentive Constraints 7.1 One possible formulation to justify agents' borrowing constraints contract between a firm and a lender at date assume that the realization t t the support of ] cost of c. Then, The contract will be a debt contract (see Gale and Hellwig (1985)). a face of /; R > if t f the firm makes the repayment of lenders pay the audit cost and receive Assume t is t t t R expected flows scaled by Rt this t t t /] _ Kobfr < so that this c, Proof of Proposition First of all L = component + fProb{R > t f] + ^^ >f] = 1 _ *<*% _ is < /] 9t Rt we have simply the complement of what the firm 0. A at date Given 1, this, let The max problem maxTr^A^ - FOG c(fc) for this t) c Xfiu will never bind. 1 The reason is that reinvestment is if it did, sufficiently investment, firms would not saturate their budget constraint at us substitute do./ for = the firm at date + Rk - + < and since we have assumed that date problem K h {-d{k) Let k{\ 2 note that the constraint do j profitable relative to date Xd Lenders receive itself. 7.2 in * the component of firms that can be held by outsiders. In our formulation suppressed the cost The /] Rt Rt date < is, E[R -f\R < f)Pro b{ R < then ^ f] of, t holds define, t E[Rt - c\R < f}Prob[R t <f} is Then return of Rt. i.i.d. the share of each firm that the entrepreneur necessarily holds. is This lender can observe c. E[R - f\R > f]Prob[R > = Now the firm defaults and /; otherwise, individually financed via a debt contract. dt [0,oo). is t contract will specify that each firm has a continuum of such projects each with Each project This R — R at standard to show that an optimal fairly it is A of the firm. t payment only by paying a this Suppose that a firm investing one unit 0. R where E[R = Rt, and of R is private information yields date 2 flows of date as follows. Consider a is R- fe/2) + c (^) in the objectives. is, 7r'(^-±-^/,; + ^^(A - l) + I(A + l)(A^to - c(fc)). is, 1/2) + tt'(^±I + ^(A - be the solution to this equation. Since, c(k) . 29 is - |(A + = 0. strictly convex, k(Xd) is 1) l)c'(k)) increasing Proof of Proposition 5 7.3 For the decentralized equilibrium, h h m>axTr (\ w - c(fc) + Rk - k/2) + n (^-k + -£j-(A - L') + ^(A + L k 2 2 2L l 'f And for the central msx.-n Since c(k) sufficient for is h {\)w - c(k) + Rk - + ^{^--k + A(AU - k/2) and the objective strictly convex, c{k)). c{k)). is the linear, FOC is necessary and an optimum. To compare the decentralized and central planner's solutions, we ix\-d{k) R- + 1/2) While the central planner's h ir + FOC {-c'(k*) clear that as long as FOC V(^ + ^g(A - L l ) is, - i(A + L l )c'(k)) = 0. is, + R- A—L > 0, + n (^~^ l 1/2) k* < Ac'(k*)) = 0. k Proof of Proposition 6 7.4 First note that the central planner's solution all w- 2 can simply compare the FOC's. The decentralized equilibrium is l ){\ f planning problem, k It. l L we need The FOC F(k, \ d ) show to for = is that /c(Ad) is + R- 1/2) + tt'( L —i R L + i ) ^(A V) L -\ -(A + L')c'(k)) ij^- ' ) - {A x drk _ X l t w - d0J Then, we wish to show that, ML < < 0. dk we can show, f = -c»(^W^)-fi,v4 + c<(i,,<0. Also, i Sr -*¥ + '<><°Combining the above results, k*. Then is, where, After some algebra > decreasing. the decentralized problem n»(-c'(k) independent of A^, and that k is we can conclude that 30 /c(Arf) is decreasing in Ad- = 0. Supporting Formulae for Banking Section 7.5 The solution to program (P7) is determined by the binding constraints. Constraint (i) requires that loans satisfy, a Now given loans and deposits, where the last step follows since the amount is ( A L"d Lf equal the amount of funds lent to firms which Q) = A + x\ A {u>) a % _ L<" of funds raised from depositors '^ ) Thus, if ( 'y^ ) must the capital constraint binds, decreasing in LF. Turning next to the decisions of firms, demand from intact firms follow from the same for loans logic as before (see by distressed firms and deposits PI and P2). Intact firms extend deposits to banks of x± .^(u;) (face value of date 2 goods), Lp = We => l x M (w) < XJw - d ,/. write the problem for distressed firms assuming that the domestic collateral con- straint never binds. Distressed firms take out bank loans of di td (u)) to save production units. A>LU d\.d{u) ' Z> A = Lw => ^M =max[fc-d?:/ ,0], < m ax[fc„ - <,,()]. Vis-a-vis the previous analysis, market clearing conditions need to be modified slightly The aggregate amount to take into account banks. ,i""n"Mir dcpo .its i)i the ml in t H'.. c.l fii must equal the In ins Likewise, the total loan supply from banks dist of deposits in banks must equal the new domestic debt issued by ins x bhd (uJ ) = Xl d (u;) = D hd (uj) = 31 ^ d Taken together and combined with the capital constraint on banks j^ - — A cf Xfw - d0J < Lra Consider the first M (w) = x ia d (uj) a Lr When inequality. => this implies that, the capital requirement on banks does not bind, banks aggregate domestic collateral perfectly - they channel the intact firms to the distressed firms. all of the excess debt capacity of The economy behaves exactly as if A„ = 1 in a public debt market (section 2.4). Asset prices and investment depend on the international collateral constraint, When k < 2(\?w - ' do..f) =» Lu k > 2{\^w - ~ doj) => L" the capital requirement depending on how tightly L"D = 1 it (i) -. = L£ = 1 = = L"D = A binds, the binds relative to <r e economy can demand from fall w = < 1 i. into regions — — 32 => L" = => L" =A l or (iv) distressed firms. In this case, and: -(&-(A>-cZ f))< -A 2 a hk - {X?w - do,/)) > - A (iii) 6^ 9" = = 1 1 References [1] Aizenman, Joshua, "Country Risk, Incomplete Information and Taxes on International Borrowing," Economic Journal [2] Allen, Franklin March 99, 1989, pp. 147-161. and Douglas Gale, "Limited Market Participation and Volatility of Asset Prices," American Economic Review 84(4), September 1994, pages 933-55. [3] Allen, Franklin and Douglas Gale, "Financial Markets, Intermediaries, and Intertem- poral Smoothing," Journal of Political Economy, 105(3), June 1997, pages 523-46. 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