We investigate the unintended real effects of regulator-led minority shareholder activism on corporate innovation. We use manually collected data from the China Securities Investor Services Center (CSISC), a novel regulatory investor protection institution controlled by the China Securities Regulatory Commission (CSRC) that holds 100 shares of every listed firm. We find that by exercising its shareholder rights, the CSISC substantially curtails the innovation output of targeted firms. This effect is amplified in cases involving a high level of myopic pressure and few innovation incentives. We further observe variation in the real effects of different intervention methods. Textual analysis reveals that CSISC intervention with a myopic topic and negative tone contributes to a decrease in innovation. The results of a mechanism analysis support the hypothesis that regulator-led minority shareholder activism induces managerial myopia and financial constraints, impeding corporate innovation. Furthermore, CSISC intervention not only diminishes innovation output but also undermines innovation efficiency. In summary, our findings suggest that regulator-led minority shareholder activism exacerbates managerial myopia to cater to investors and financial constraints, ultimately stifling corporate innovation.

Analyzing data from Chinese online interactive investor platforms, our study reveals that Minority Shareholder Activism (MSA) effectively curtails informed insider trading by voting with their hands or feet, particularly in firms with weaker external monitoring. MSA not only reduces the profitability of insider trading but also encourages firms and regulators to implement stricter ex-post disciplinary measures. Moreover, MSA alleviates the negative impact of insider trading on the stock market by enhancing stock liquidity, increasing stock price informativeness, and reducing crash risk.

Minority shareholder activism (MSA) on online interactive platforms is a new form of corporate governance in China. This paper investigates whether and how dividend-related MSA affects corporate dividend policies. We find listed firms are more likely to pay dividends and raise payout ratios with MSA. Our baseline findings are robust to a variety of robustness checks. We establish a causal relationship between MSA and future dividend payouts, with both instrumental variable approach and PSM-DID approach, and we provide evidence to show the increasing effect of MSA can be explained by exit threat and voting attendance. Our focused MSA complements the formal voting rights of minority shareholders and overcomes the absence of institutional investor monitoring. Overall, our findings suggest that minority shareholders can effectively monitor management when they are empowered with voice in the age of information.