A recent study by Goyal and Santa-Clara [J. Finance 58 (2003) 975] finds a significantly positive relationship between average stock returns and pre-determined average return volatility measures, while finding no relationship between the average return and its own volatility. The result is interpreted as evidence that idiosyncratic risk matters in asset pricing. We re-examine the issue in extended sample periods and find the proclaimed positive relationship is not substantiated. Our analysis indicates that the above-mentioned positive relationship is mainly driven by the data in the 1990s. The trading strategy suggested by Goyal and Santa-Clara to exploit the return predictability by pre-determined volatility does not yield sustained economic gains.

This study constructs a firm-level measure of large foreign ownership (LFO) and investigates its impact on stock return volatility in 31 emerging markets. We find a negative relationship between LFO and volatility, even after controlling for potential endogeneity and the impact of major domestic shareholders. This suggests a stabilizing role of LFO in emerging markets, which is consistent with previous suggestions in the literature on the strong commitments and potential monitoring role of large foreign shareholders. Overall, our study highlights the importance of recognizing the heterogeneity among foreign investors and the benefits of large foreign shareholders to emerging stock markets.