We study the accuracy of a wide variety of estimators of asset price variation constructed from high-frequency data (so-called “realized measures”), and compare them with a simple “realized variance” (RV) estimator. In total, we consider almost 400 different estimators, applied to 11...

Abstract Using recently proposed estimators of the variation of positive and negative returns (“realized semivariances”), and high frequency data for the S&P 500 index and 105 individual stocks, this paper sheds new light on the predictability of equity price volatility. We show that future...