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liquid instrument suffers from liquidity shocks that induce periods of increased volatility and significant return …
Persistent link: https://www.econbiz.de/10011523414
Harvey, Liu, and Zhu (2016) “argue that most claimed research findings in financial economics are likely false.” Surprisingly, their false discovery rate (FDR) estimates suggest most are true. I revisit their results by developing non- and semi-parametric FDR estimators that account for...
Persistent link: https://www.econbiz.de/10013214199
leverage effect and the volatility feedback effect. We stress the importance of distinguishing between realized volatility and … implied volatility, and find that implied volatilities are essential for assessing the volatility feedback effect. The … leverage hypothesis asserts that return shocks lead to changes in conditional volatility, while the volatility feedback effect …
Persistent link: https://www.econbiz.de/10013128856
stock returns and volatility, and to rank these markets with respect to volatility. For this purpose, six markets are … dipicting high correlations and a heteroskedastic patron (volatility) among the markets over the sample tenure which then … reveals that KSE has 66.23% volatility and 0.10% average return followed by Sensex, which has 63.39% volatility and 0 …
Persistent link: https://www.econbiz.de/10013106113
Volatility has been one of the most active and successful areas of research in time series econometrics and economic … empirical insights to emerge from this burgeoning literature, with a distinct focus on forecasting applications. Volatility is … inherently latent, and Section 1 begins with a brief intuitive account of various key volatility concepts. Section 2 then …
Persistent link: https://www.econbiz.de/10014023691
Using high-frequency intraday data, we construct, test and model seven new realized volatility estimators for six … international equity indices. We detect jumps in these estimators, construct the jump components of volatility and perform various … effects of jumps on volatility. Our results expand and complement the previous literature on the nonparametric realized …
Persistent link: https://www.econbiz.de/10013029279
With the advent in recent years of large financial data sets, machine learning and high-performance computing, analysts can backtest millions (if not billions) of alternative investment strategies. Backtest optimizers search for combinations of parameters that maximize the simulated historical...
Persistent link: https://www.econbiz.de/10012904833
's information set for the myopic stock-bond portfolio. In-sample I find that the best forecast of the volatility and correlation is … metrics: volatility, Sharpe ratio, certainty-equivalent return, turnover and opportunity cost. For minimum-variance portfolios … formed using analyst forecasts, although the volatility of the portfolios increase, the Sharpe ratios substantially increase …
Persistent link: https://www.econbiz.de/10012975364
Correlation matrices are ubiquitous in finance. Some key applications include portfolio construction, risk management, and factor/style analysis. Correlation matrices are usually estimated from historical empirical observations or derived from historically estimated factors. It is widely...
Persistent link: https://www.econbiz.de/10012859763
We prove that high simulated performance is easily achievable after backtesting a relatively small number of alternative strategy configurations, a practice we denote “backtest overfitting”. The higher the number of configurations tried, the greater is the probability that the backtest is...
Persistent link: https://www.econbiz.de/10013035233