Showing 1 - 10 of 979
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...
Persistent link: https://www.econbiz.de/10011335205
We propose the use of a risk measure built on flight-to-safety (FTS) episodes into a volatility forecasting model. We …. Superior model performance is found over some of the most common volatility forecasting models proposed in the literature that …
Persistent link: https://www.econbiz.de/10012852744
The benefits of using flight-to-safety (FTS) in volatility forecasting are assessed within a multivariate GARCH …
Persistent link: https://www.econbiz.de/10012916710
We analyze the impact of sentiment and attention variables on volatility by using a novel and extensive dataset that combines social media, news articles, information consumption, and search engine data. Applying a state-of-the-art sentiment classification technique, we investigate the question...
Persistent link: https://www.econbiz.de/10012917736
The multi-fractal analysis has been applied to investigate various stylized facts of the financial market including market efficiency, financial crisis, risk evaluation and crash prediction. This paper examines the daily return series of stock index of NASDAQ stock exchange. Also, in this study,...
Persistent link: https://www.econbiz.de/10013273743
This paper analyzes conditional threshold effects of stock market volatility on crude oil market volatility. We use the conditional threshold autoregressive (CoTAR) model, a novel extension of TAR from a constant to time-varying threshold. The conditional threshold is specified as an empirical...
Persistent link: https://www.econbiz.de/10014353102
In this paper, we develop new latent risk measures that are designed as a prior synthesis of key forecasting … usefulness of a large variety of machine learning methods for forecasting equity returns at market and sector levels. In addition … significantly improve forecasting performance relative to the random walk and linear benchmark alternatives, when comparing mean …
Persistent link: https://www.econbiz.de/10014256827
-memory counterparts. Since long memory models should have a particular advantage over long forecasting horizons, we consider predictions …
Persistent link: https://www.econbiz.de/10010294979
-memory counterparts. Since long memory models should have a particular advantage over long forecasting horizons, we consider predictions …
Persistent link: https://www.econbiz.de/10010295136
forecasting volatility model with the most appropriate error distribution. The results suggest the presence of leverage effect … forecasting model that could guarantee a sound policy decisions. …
Persistent link: https://www.econbiz.de/10011489480