“…We use cash flow volatility because the literature suggests that idiosyncratic risk in cash flow volatility is difficult to hedge (Campbell et al, 2001, Irvine andPontiff, 2009), and therefore firms with higher cash flow volatility hold more cash for precautionary purposes (Opler et al, 1999;Han and Qiu, 2007). Similarly, based on the literature (Al Mamun et al, 2023;Sun and Wang, 2015;Zhang et al, 2020) we also define higher debt ratio and lower interest coverage ratio as financial constraints. All of these financial constraint measures are widely used in the finance and accounting literature (Al Mamun et al, 2023;Bao et al, 2012;Elnahas et al, 2023;Hennessy and Whited, 2007;Linck et al, 2013); their detailed definitions can be found in the Appendix.…”