Abstract Let X be a reflexive Banach space of functions analytic on a bounded plane domain G such that for every λ in G the functional of evaluation at λ is bounded. Assume further that X contains the constants and admits multi-plication by the independent variable z, Mz, as a bounded operator. We give suﬃcient conditions for Mz to be reflexive on X. Also, we discuss a class of shifts that are reflexive, and powers of the operator Mz of multiplication by z on Weighted Hardy spaces are shown to be reflexive. Also, we derive some spectral properties of a multiplication operator acting on invariant subspaces for the multiplication operator Mz. Keywords: Banach spaces of analytic functions, multiplication operators, reflexive operator, multipliers, Caratheodory hull, bounded point evaluation, weighted Hardy spaces, polynomially bounded, Invariant subspace.

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# Abstract Let X be a reflexive Banach space of functions analytic on a