We document that enhanced stock liquidity increases a firm’s propensity to hold cash. Endogeneity is addressed using a difference-in-differences approach based on tick-size decimalization. Our finding is surprising in light of the view that improved stock liquidity reduces financial constraints. We propose that firms hold cash also to buy back shares and higher stock liquidity strengthens this incentive. Tests are supportive. Endogeneity is controlled for using the introduction of repurchase safe harbor rules. We conclude that with respect to the effect of stock liquidity on cash holdings, the repurchase motive dominates the real investments motive.
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