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Filtering intraday seasonality in volatility is crucial for using high frequency data in econometric analysis. This … paper studies the effects of filtering on statistical inference concerning the impact of news on exchange rate volatility …
Persistent link: https://www.econbiz.de/10005649006
In this paper the autocorrelation structure of the Exponential GARCH(p,q) process of Nelson (1991) is considered. Conditions for the existence of any arbitrary unconditional moment are given. Furthermore, the expressions for the kurtosis and the autocorrelations of squared observations are...
Persistent link: https://www.econbiz.de/10005649336
The evidence of volatility-price dependence observed in previous works (Karakatsani and Bunn 2004; Bottazzi, Sapio and … Secchi 2005; Simonsen 2005) suggests that there is more to volatility than simply spikes. Volatility is found to be … NordPool. Prompted by these observations, this paper aims to understand whether volatility-price patterns can be mapped into …
Persistent link: https://www.econbiz.de/10005650077
The GARCH-t model is widely used to predict volatilty. However, modeling the conditional variance as a linear combination of past squared observations may not be the best approach if the standardized observations are non-Gaussian. A simple modi.cation lets the conditional variance, or its...
Persistent link: https://www.econbiz.de/10005650533
leverage, volatility and the riskless interest rate. We find that estimated coefficients for these variables are consistent … premia is approximately 23%. Volatility and leverage by themselves also have substantial explanatory power for credit default … data. We therefore conclude that leverage, volatility and the riskfree rate are important determinants of credit default …
Persistent link: https://www.econbiz.de/10005651562
distinguish between the stability of a stochastic dynamic system and the volatility of a variable generated by this system. It is …
Persistent link: https://www.econbiz.de/10005651613
time have increased in stability and decreased in volatility when the Nordic power market has expanded and the degree of …
Persistent link: https://www.econbiz.de/10005651763
volatility of the stock market in Tallinn. We found that there is only a weak relationship between political risks of different … origins and the stock market volatility in the Baltic states in 2004-2007. In addition, we found a significant Monday effect …
Persistent link: https://www.econbiz.de/10005651968
How has the European monetary integration, with the creation of the EMU, affected the stability and volatility of … foreign exchange? In order to answer this question, stability and volatility measures are defined and calculated. We then use … these to investigate the changes in the stability and volatility of 16 European currencies, and in the volatility of the …
Persistent link: https://www.econbiz.de/10005652009
information variables in the mean and variance equations. The volatility of markets changed somewhat over the period 1960-1990 and … correlation rises in periods when the conditional volatility of markets is large. There is some preliminary evidence that economic … variables such as the dividend yield and interest rates contain information about future volatility and correlation that is not …
Persistent link: https://www.econbiz.de/10005656106