This paper argues that, contrary to the conventional wisdom, stock return synchronicity (or R 2 ) can increase when transparency improves. In a simple model, we show that, in more transparent environments, stock prices should be more informative about future events. Consequently, when the events actually happen in the future, there should be less "surprise" (i.e., less new information is impounded into the stock price). Thus a more informative stock price today means higher return synchronicity in the future. We find empirical support for our theoretical predictions in 3 settings: namely, firm age, seasoned equity offerings (SEOs), and listing of American Depositary Receipts (ADRs).

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The firms listed on China's stock market are less than ten years old and to date there has been relatively little research on the usefulness of their accounting disclosures for investors. This study focuses on the information content of annual earnings and dividend announcements made by listed Chinese companies. Earnings, cash dividends, and stock dividends are announced concurrently in China and so this allows for tests of their information usefulness and of the interactions between the three signals. Based on a data set of up to 1,232 announcements, we find that unexpected earnings, proxied by earnings changes, are positively related to abnormal returns. Thus, earnings are used by investors in setting market prices. Stock dividends corroborate or attenuate the earnings signal. If the sign of the unexpected stock dividend (increase, decrease) is the same as the sign of the unexpected earnings, then the earnings signal is stronger. If the signs are opposite, the earnings signal is weaker. Unexpected cash dividends have little impact on the earnings signal. Stock dividends per se have a small association with stock returns. In contrast, cash dividends have no discernible association with stock returns and this is consistent with dividend irrelevance arguments. Our results are robust across a number of sensitivity tests.

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