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We develop an empirically highly accurate discrete-time daily stochastic volatility model that explicitly distinguishes … inter-dependencies among the shocks to returns and the two different volatility components. The model estimates suggest that … the leverage effect, or asymmetry between returns and volatility, works primarily through the continuous volatility …
Persistent link: https://www.econbiz.de/10014217079
The speed of convergence of the truncated realized covariance to the integrated covariation between the Brownian parts of two semimartingales is heavily influenced by the presence of infinite activity jumps with infinite variation. Namely, the two small jumps processes play a crucial role...
Persistent link: https://www.econbiz.de/10013033475
The volatility premium is a well-documented phenomenon, which can be approximated by the difference between the … previous month level of the VIX Index and the rolling 30-day close-to-close volatility. In concordance with existing literature …, we show evidence that VIX is generally above the 30-day rolling volatility giving rise to the volatility premium, so that …
Persistent link: https://www.econbiz.de/10012910384
implemented and do not contain any numerical integration.These formulas are important in volatility surface construction and CMS …
Persistent link: https://www.econbiz.de/10013108810
Stochastic volatility models are widely used in interest rate modeling to match the option smiles -- the two most …, Heston-LMM and SABR-LMM respectively.In this paper we consider the CEV model with a general stochastic volatility. Assuming … that rate-volatility correlation is zero we are able to obtain an exact integral representation of the option price …
Persistent link: https://www.econbiz.de/10013059957
Persistent link: https://www.econbiz.de/10011905061
Conventional financial theory considers ex-ante that risk, generally measured by the volatility, has to be …
Persistent link: https://www.econbiz.de/10011757486
which depending on the market states signaled by the level of volatility spread. We have documented that effectively, there … capital. We then propose the volatility spread as the active management factor into the Carhart's model used to evaluate …
Persistent link: https://www.econbiz.de/10012146691
In the current low-interest-rate environment, extending option models to negative rates has become an important issue. In our previous paper, we introduced the Free SABR model, which is a natural and an attractive extension to the classical SABR model. In spite of its advantages over the Shifted...
Persistent link: https://www.econbiz.de/10013016587
In the present study, we propose a simple test approach based on the work of Breitung and Candelon (2006), which allows us to test for asymmetric predictability at a pre-specified frequency. The test approach can also be used to test for causality in cointegrated systems, as illustrated by...
Persistent link: https://www.econbiz.de/10014261668