Showing 1 - 10 of 248
as within its most common extensions (the jump-diffusion, the stochastic volatility and the stochastic interest rates …
Persistent link: https://www.econbiz.de/10012019000
We provide ready-to-use formulas for European options prices, risk sensitivities, and P&L calculations under Lévy-stable models with maximal negative asymmetry. Particular cases, efficiency testing, and some qualitative features of the model are also discussed.
Persistent link: https://www.econbiz.de/10012019316
Most of the models leading to an analytical expression for option prices are based on the assumption that underlying asset returns evolve according to a Brownian motion with drift. For some asset classes like commodities, a Brownian model does not fit empirical covariance and autocorrelation...
Persistent link: https://www.econbiz.de/10011890768
Managing unemployment is one of the key issues in social policies. Unemployment insurance schemes are designed to cushion the financial and morale blow of loss of job but also to encourage the unemployed to seek new jobs more proactively due to the continuous reduction of benefit payments. In...
Persistent link: https://www.econbiz.de/10012126434
based on the superior volatility forecast for analyzing historical data. We extend the current litearure by measuring the … volatility of an underlying asset in the last predefined period and comparing the actual volatility in currency with historical … volatility in currency to make predictions of implied volatility. We calculated stock price volatility through an optimal holding …
Persistent link: https://www.econbiz.de/10014637162
We present a method for the arbitrage-free interpolation of plain-vanilla option prices and implied volatilities, which is based on a system of integral equations that relates terminal density and option prices. Using a discretization of the terminal density, we write these integral equations as...
Persistent link: https://www.econbiz.de/10014332042
This work aims to develop a measure of how much credit risk is priced into equity options. Such a measure appears particularly appealing when applied to a portfolio of equity options, as it allows for the factoring in of firm-specific default dynamics, thus producing a comparable statistic...
Persistent link: https://www.econbiz.de/10014393159
We propose a fully data-driven approach to calibrate local stochastic volatility (LSV) models, circumventing in … particular the ad hoc interpolation of the volatility surface. To achieve this, we parametrize the leverage function by a family … be seen in the context of neural SDEs and (causal) generative adversarial networks: we generate volatility surfaces by …
Persistent link: https://www.econbiz.de/10012373082
We investigate the state dependence of the variance of the instantaneous variance of the S&P 500 index empirically. Time-series analysis of realized variance over a 20-year period shows strong evidence of an elasticity of variance of the variance parameter close to that of a log-normal model,...
Persistent link: https://www.econbiz.de/10012292915
This paper studies the effect of variance swap in hedging volatility risk under the mean-variance criterion. We … consider two mean-variance portfolio selection problems under Heston's stochastic volatility model. In the first problem, the … variance swap can be used to hedge against the volatility risk. In the second problem, only the bank account and the stock can …
Persistent link: https://www.econbiz.de/10012293125