The sum of squared intraday returns provides an unbiased and almost error-free measure of ex-post volatility. In this paper we develop a nonlinear Autoregressive Fractionally Integrated Moving Average (ARFIMA) model for realized volatility, which accommodates level shifts, day-of-the-week...

This paper examines the effect of structural break in long-run mean of dividend-price ratio and its impact on long-horizon returns predictive regression in the Stock Exchange of Thailand from April 1975 to December 2010. The empirical results show that there exists a structural break in...