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A variety of historical-volatility, peer-historical-volatility, implied-volatility and blended estimators of stock … price volatility are developed and tested for a group of large U.S. companies over roughly a thirty-year window. Longer …-year realized volatility. Inclusion of implied volatility into forecasts at low weightings is found to have little discernible …
Persistent link: https://www.econbiz.de/10012940220
ARFIMA models, as advocated by Jiang and Tian for use in long-term volatility forecasting, are found in a follow …-up empirical study to be dominated by a certain simple historical predictor of stock price volatility at a five-year horizon. (This … volatility, due to bias-related concerns.) A relationship is observed between the estimated fractional-differencing parameter and …
Persistent link: https://www.econbiz.de/10012918264
This paper evaluates the VaR forecasting performance of the Markov regime switching (MRS) based volatility models … volatility models like the EGARCH or GARCH models with a skewed t-student distribution of return innovations can outperform the …
Persistent link: https://www.econbiz.de/10013110873
We introduce a new, hybrid measure of stock return tail covariance risk, motivated by the under-diversified portfolio … covariance is measured across the left tail states of the individual stock return distribution, not across those of the market … covariance risk (H-TCR) and expected stock returns, with an annualized premium of 9%, in contrast to the insignificant or …
Persistent link: https://www.econbiz.de/10013066429
We introduce a new, hybrid measure of stock return tail covariance risk, motivated by the under-diversified portfolio … covariance is measured across the left tail states of the individual stock return distribution, not across those of the market … covariance risk (H-TCR) and expected stock returns, with an annualized premium of 9%, in contrast to the insignificant or …
Persistent link: https://www.econbiz.de/10013066748
We introduce a new, hybrid measure of stock return tail covariance risk, motivated by the under-diversified portfolio … covariance is measured across the left tail states of the individual stock return distribution, not across those of the market … covariance risk (H-TCR) and expected stock returns, with an annualized premium of 9%, in contrast to the insignificant or …
Persistent link: https://www.econbiz.de/10013067331
Persistent link: https://www.econbiz.de/10012156853
We propose several multivariate variance ratio statistics. We derive the asymptotic distribution of the statistics and scalar functions thereof under the null hypothesis that returns are unpredictable after a constant mean adjustment (i.e., under the Efficient Market Hypothesis). We do not...
Persistent link: https://www.econbiz.de/10010365211
We propose an alternative Ratio Statistic for measuring predictability of stock prices. Our statistic is based on actual returns rather than logarithmic returns and is therefore better suited to capturing price predictability. It captures not only linear dependence in the same way as the...
Persistent link: https://www.econbiz.de/10010481079
We propose several multivariate variance ratio statistics. We derive the asymptotic distribution of the statistics and scalar functions thereof under the null hypothesis that returns are unpredictable after a constant mean adjustment (i.e., under the weak form Efficient Market Hypothesis). We do...
Persistent link: https://www.econbiz.de/10010496122