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This note discusses some aspects of the paper by Hu and Tsay (2014), "Principal Volatility Component Analysis". The key issues are considered, and are also related to existing conditional covariance and correlation models. Some caveats are given about multivariate models of time-varying...
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conditional volatility models, specifically the BEKK and DCC models. A serious technical deficiency is that the Quasi … literature have used the DCC model to test for volatility spillovers. However, it is well known in the financial econometrics … literature that the DCC model has no regularity conditions, and that the QMLE of the parameters of DCC has no asymptotic …
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correlations from the DCC model suggest an increase in correlation between China and other stock markets since the most recent …
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This paper uses three methodologies for measuring the existence of systemic risk in the Colombian banking system. The determination of its existence is based on implementing three systemic risk measures widely referenced in academic works after the subprime crisis, known as CoVaR, MES and SRISK....
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January 2000 to April 2019, along with, DCC, ADCC and GO-GARCH models as well as a hedging effectiveness criterion, we …
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