We find that equity option liquidity increases stock price crash risk. This effect is robust to different measures of option liquidity and crash risk, alternative weighting schemes, option moneyness, and is not spurious due to endogeneity issues. The option liquidity-stock crash risk causality...

This study examines the relationships between excess corporate cash holding and equity option market liquidity over the period from Jan 3, 2005 to Dec 31, 2019. We show that the level of cash reserve in excess of what can be captured by firm characteristics significantly explains the liquidity...