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We propose a new approach to the definition of stress scenarios for volatilities and correlations. Correlations and volatilities depend on a common market factor, which is the key to stressing them in a consistent and intuitive way. Our approach is based on a new asset price model where...
Persistent link: https://www.econbiz.de/10011042126
perspective on the behavior of stock markets, and provides an alternative to the concept of exceedance correlation. For a US …
Persistent link: https://www.econbiz.de/10011116929
findings based on the Dynamic Conditional Correlation (DCC) tend to suggest: both the conventional and Islamic MSCI indices of …
Persistent link: https://www.econbiz.de/10011099456
Markowitz (1952) portfolio selection requires estimates of (i) the vector of expected returns and (ii) the covariance matrix of returns. Many successful proposals to address the first estimation problem exist by now. This paper addresses the second estimation problem. We promote a nonlinear...
Persistent link: https://www.econbiz.de/10011099190
is specified in two steps: one for each realized variance, and one for the realized correlation matrix. The realized … correlation model is a scalar dynamic conditional correlation model. Estimation can be done in two steps as well, and a QML …
Persistent link: https://www.econbiz.de/10010662648
recently proposed and is here generalized with the introduction of a correction for the presence of correlation across assets … experiments show evidence of the improvements given by the correction for asset correlation. …
Persistent link: https://www.econbiz.de/10010751789
The OGARCH specification is the leading model for a class of multivariate GARCH (MGARCH)specifications that are based on linear combinations of univariate GARCH specifications. Most MGARCH models in this class adopt a spectral decomposition of the covariance matrix, allowing for...
Persistent link: https://www.econbiz.de/10011188475
and long memory in the volatility of the Turkish Stock Market. Furthermore, we investigate the performances in-sample and … results in capturing stylized facts in the volatility of Turkish Stock Market. Consequently, evaluating of asymmetry and long … memory property in volatility of the returns can ensure suitable Value-at-Risk (VaR) model selection for performance of risk …
Persistent link: https://www.econbiz.de/10010938176
We investigate the role of jumps in transmitting volatility between foreign exchange markets (Engle, Ito, and Lin, 1990 … different implications for the impact of jumps on exchange rate volatility transmission. Specifically, isolated and successive … jumps have opposite predictions for future volatility. Although the realized volatility literature finds that heat wave …
Persistent link: https://www.econbiz.de/10010951615
do not support long memory behaviour for the stock market returns. However, FIGARCH model indicate that volatility of … market returns has long memory. Moreover, in order to test the feature of long memory in the return and volatility of the …. Predictable structure of volatility of Pakistan Stock Market display that this market is the weak-form market inefficiency …
Persistent link: https://www.econbiz.de/10011273115