Showing 1 - 10 of 152
liquidity shock, separating information maximum likelihood estimation of the integrated volatility and covariance with micro … illustrations, EVT and tail-risk modelling, with evidence from market indices and volatility series, the economics of data using … simple model free volatility in a high frequency world, arbitrage-free implied volatility surfaces for options on single …
Persistent link: https://www.econbiz.de/10011256871
. Spatial econometrics focuses on the specification and estimation of regression models explicitly incorporating such spatial …
Persistent link: https://www.econbiz.de/10011257154
The paper proposes a general asymmetric multifactor Wishart stochastic volatility (AMWSV) diffusion process which …
Persistent link: https://www.econbiz.de/10011256372
volatility models. We propose a continuous timefractionally integrated Wishart stochastic volatility (FIWSV) process. We derive …
Persistent link: https://www.econbiz.de/10011257492
In this article we introduce a new class of test statistics designed to detect the occurrence of abnormal observations. It derives from the joint distribution of moment- and quantile-based estimators of power variation sigma^r, under the assumption of a normal distribution for the underlying...
Persistent link: https://www.econbiz.de/10011255782
This discussion paper resulted in an article in the <I>Journal of the American Statistical Association</I> (2007). Vol. 102, issue 477, pages 16-27.<p> Novel periodic extensions of dynamic long memory regression models with autoregressive conditional heteroskedastic errors are considered for the analysis...</p></i>
Persistent link: https://www.econbiz.de/10011256266
We present a new framework for the joint estimation of the default-free government term structure and corporate credit …
Persistent link: https://www.econbiz.de/10011255975
Taking a portfolio perspective on option pricing and hedging, we show that within the standard Black-Scholes-Merton framework large portfolios of options can be hedged without risk in discrete time. The nature of the hedge portfolio in the limit of large portfolio size is substantially different...
Persistent link: https://www.econbiz.de/10011257082
Since Black (1976), the source of the stock price volatility smirk has remained a controversy. The volatility smirk is … volatility smirk, both for time series and cross sections of companies. These results may help to disentangle the leverage effect … from other potential explanations like volatility feedback, the time-varying risk premium, and a down-market effect. …
Persistent link: https://www.econbiz.de/10011268659
Estimation of the volatility of time series has taken off since the introduction of the GARCH and stochastic volatility … unobserved stochastic volatility, and the varying approaches that have been taken for such estimation. In order to simplify the … comprehension of these estimation methods, the main methods for estimating stochastic volatility are discussed, with focus on their …
Persistent link: https://www.econbiz.de/10011257075