Increasing accounting information comparability (AIC) theoretically facilitates investors’ analysis of firm performance and improves stock price informativeness by incorporating more firm-specific information. However, achieving the purported purpose empirically is subject to firms’ institutional environment and corporate governance. We propose that under weak legal systems and less developed market environments, higher AIC may adversely affect price informativeness due to managers’ incentives and ability to obfuscate information and investors’ “hallo” effect. Using a large sample from China, we show that the AIC is positively related to price synchronicity, an inverse measure of price informativeness. Additionally, the positive impact is significantly greater for firms located in regions with weak legal systems and less developed market environments. The positive relation is also significantly greater when the business environment and economic policy uncertainties are high.

We investigate a controversial and hotly debated issue of whether low stock return synchronicity (SRS) means more or less informative stock prices using three exogenous events: an anti-corruption campaign launched by the Chinese Government, a stock market crash in China, and firms’ public exposure of fraud. Investigating the changes in SRS associated with these events helps mitigate endogenous issues since these events have distinctive relationships with companies’ stock price informativeness. Our results show that firms’ SRS declines significantly after the anti-corruption campaign aiming to improve corporate governance and after firms’ public exposure of fraud. The SRS is substantially higher during and after the stock market crises. Firms located in more developed regions have lower SRS than those in less developed regions. These results consistently indicate an inverse relationship between the SRS and stock price informativeness.

We revisit and extend the topic of secondary share sales and revisions in IPOs. First we test to determine if secondary share sales constitute a negative signal that is captured in aftermarket performance. We find secondary share sales in general are not correlated with poorer initial or long-run performance, but selling by officers and directors is associated with poorer long-run returns. Second, we examine if secondary share revisions (1) reflect selling shareholders’ attempts to conceal private information or (2) are contingent upon whether a firm can reach its goal of raising sufficient capital. We find empirical support for a capital goal, but not for concealment.

In this study we show that both the price impact of trades and serial correlation in trade direction are positively and significantly related to the probability of information-based trading (PIN). The positive relation remains significant even after controlling for the effects of stock attributes. Higher trading activity (i.e., shorter intervals between trades) induces both larger price impact and stronger positive serial correlation in trade direction. The effect of time interval between trades on quote revision is stronger for stocks with higher PIN values. These results provide direct empirical support for the information models of trade and quote revision.