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heteroskedasticity using a FIGARCH model. The dramatic decrease in the number of significant nonlinear causality lags confirms that …
Persistent link: https://www.econbiz.de/10011011734
these series. But from among the conditional heteroscedasticity models, the ARFIMA-FIGARCH model was selected as the best …
Persistent link: https://www.econbiz.de/10011259878
appeared. In this paper two models of the conditional heteroskedasticity - fractionally integrated GARCH (FIGARCH) and EWMA are … by Kupiec´s test, TUFF and Christoffersen´s test. These tests demonstrate, that the FIGARCH model is a suitable …
Persistent link: https://www.econbiz.de/10009294290
trajectories from FIGARCH model. This paper is presented as follows: Section 1 opens on a definition of the volatility, Section 2 … examines the interdependence of the studied markets; Section 3 provides a FIGARCH model in order to capture the dynamics and …
Persistent link: https://www.econbiz.de/10009322714
This paper investigates long-memory behaviour of stock returns of Egypt, Tunisa and Morrocco stock markets using daily stock price data. Results in the paper support evidence of stationary short-memory process for the returns of the three markets. Short memory of stock returns implies that most...
Persistent link: https://www.econbiz.de/10008592726
latter characterizes the case of Integrated and Fractionally Integrated GARCH processes. Finally, we discuss testing for …
Persistent link: https://www.econbiz.de/10010608114
class of models (namely, ARFIMA (p,d',q)-GARCH (1,1), IGARCH (1,1), FIGARCH (1,d,0), FIGARCH (1,d,1), EGARCH (1,1) and … paper utilizes the wavelets approach (based on Haar, Daubechies-4, Daubechies-12 and Daubechies-20 wavelets) and the GARCH … support the Taylor effect in the volatility proxies. The results show that ARFIMA (p,d',q)-FIGARCH (1,d,0) model specification …
Persistent link: https://www.econbiz.de/10010814981
Conditionally Heteroskedastic (FIGARCH) and the two-state Markov Regime-Switching GARCH (RS-GARCH) models. For most of the DJN 65 … FIGARCH generally outperforms RS-GARCH. … a greater impact on volatility than positive news. Furthermore, the results from the RS-GARCH model indicate that news …
Persistent link: https://www.econbiz.de/10010730257
univariate and multivariate conventional VaR methods. The reported results demonstrate that GARCH-t, conditional EVT and FIGARCH … before fitting a copula. Each return series is modeled by AR-(FI) GARCH univariate model. Then, we fit the GPD distribution …
Persistent link: https://www.econbiz.de/10010753343
the intraday volatility using a FIGARCH model and the intraday seasonality by the Fourier Flexible Form. We find that …
Persistent link: https://www.econbiz.de/10010754712