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This paper provides a multivariate score-type test to distinguish between true and spurious long memory. The test is based on the weighted sum of the partial derivatives of the multivariate local Whittle likelihood function. This approach takes phase shifts in the multivariate spectrum into...
Persistent link: https://www.econbiz.de/10010493583
We propose a semiparametric multivariate estimator and a multivariate score-type testing procedure under a perturbed multivariate fractional process. The estimator is based on the periodogram and uses a local Whittle criterion function which is generalised by an additional constant to capture...
Persistent link: https://www.econbiz.de/10014247836
small minority of different cases. Investigating further we find that all volatility series show persistence breaks during …
Persistent link: https://www.econbiz.de/10012322368
This paper examines long memory volatility in the cross-section of stock returns. We show that long memory volatility … capitalization, book-to-market ratio, prior performance and price jumps. Long memory volatility is negatively priced in the cross …-section. Buying stocks with shorter memory and selling stocks with longer memory in volatility generates significant excess returns of …
Persistent link: https://www.econbiz.de/10011750708
Persistent link: https://www.econbiz.de/10012631778
This paper derives a multivariate local Whittle estimator for the memory parameter of a possibly long memory process and the fractional cointegration vector robust to low frequency contaminations. This estimator as many other local Whittle based procedures requires a priori knowledge of the...
Persistent link: https://www.econbiz.de/10012105358
Persistent link: https://www.econbiz.de/10011974604
, Zeitreihenanalyse …
Persistent link: https://www.econbiz.de/10011559565
This paper examines long memory volatility in international stock markets. We show that long memory volatility is … memory in volatility than emerging and frontier countries and that stock market jumps are negatively correlated with long … memory of volatility. Overall, our results provide some evidence of a link between stock market uncertainty and macroeconomic …
Persistent link: https://www.econbiz.de/10012173277
This paper examines long memory volatility in international stock markets. We show that long memory volatility is … the cross-sectional dimension. We also find that developed countries possess longer memory in volatility than emerging and …
Persistent link: https://www.econbiz.de/10011750751