We explore the governance effect of short-selling threat on mergers and acquisitions (M&A). We use equity lending supply (LS) to proxy for the threat, as short sellers incentives to scrutinize a firm depend on the availability of borrowing shares. Our results show that acquirers with higher LS have higher announcement returns. The effect is stronger when acquirers are more likely to be targets of subsequent hostile takeovers and when their managers wealth is more linked to stock prices. We conduct four sets of tests to mitigate endogeneity concerns. Finally, the governance effect exists only for deals prone to agency problems.

The disciplinary role of the financial market could interact with a firm's choice of internal corporate governance. We prove that when the efficiency of the initial public offering (IPO) pricing improves, entrepreneurs choose stronger corporate governance structures as way of committing to extract fewer private benefits in exchange for higher prices. Using a difference-in-difference method that exploits the asymmetric impacts of the IPO pricing deregulation on the Chinese mainland and Hong Kong markets, we find that improving the efficiency of IPO pricing has a positive impact on a firm's corporate governance quality. This impact is more pronounced for firms with lower tangibility, for firms with higher market-to-book ratios, and for state-owned enterprises. Our findings demonstrate that the development of the financial market can promote economic development through improving corporate governance.