搜索结果: 1-13 共查到“经济学 implied volatility”相关记录13条 . 查询时间(0.47 秒)
A new look at short-term implied volatility in asset price models with jumps
exponential Levy models Blumenthal-Getoor index short-dated options implied volatility.
2012/9/14
We analyse the behaviour of the implied volatility smile for options close to expiry in the exponential Levy class of asset price models with jumps. We introduce a new renormalisation of the strike v...
The Exact Implied Volatility Smile for Exponential L関y Models
Implied Volatility Exponential L磂vy.
2012/9/14
For any exponential L磂vy model whose diffusion component isnonzero, we provide an exact series representation for the implied volatility of a European call option. Numerical examples are provided.
Implied Volatility Surface: Construction Methodologies and Characteristics
Heston model and its extensions Carr and Wu approach Arbitrage-free algorithms
2011/7/19
The implied volatility surface (IVS) is a fundamental building block in computational finance.We provide a survey of methodologies for constructing such surfaces. We also discuss various topics which ...
On dependence of the implied volatility on returns for stochastic volatility models
stochastic volatility the Heston model
2010/10/21
We study the dependence of volatility on the stock price in the stochastic volatility framework on the example of the Heston model.To be more specific, we consider the conditional expectation of vari...
We study specific nonlinear transformations of the Black-Scholes implied volatility to show remarkable properties of the volatility surface. Model-free bounds on the implied volatility skew are given...
Asymptotic equivalence in Lee's moment formulas for the implied volatility and Piterbarg's conjecture
Call and put pricing functions Implied volatility Lee’s moment formula
2010/10/21
The asymptotic behavior of the implied volatility associated with a general call pricing function has been extensively studied in the last decade. The main topics discussed in this paper are Lee's mom...
The Impact of Credit Risk and Implied Volatility on Stock Returns
Credit Risk Implied Volatility Stock Returns
2010/10/20
This paper examines the possibility of using derivative-implied risk premia to explain stock returns. The rapid development of derivative markets has led to the possibility of trading various kinds of...
A remark on Gatheral's 'most-likely path approximation' of implied volatility
remark on Gatheral's 'most-likely path implied volatility
2010/11/2
We give a rigorous proof of the representation of implied volatility as a time-average of weighted expectations of local or stochastic volatility. With this proof we fix the problem of a circular defi...
Volatility forecasts and the at-the-money implied volatility: a multi-components ARCH approach and its relation with market models
Volatility forecasts at-the-money implied relation
2010/10/29
For a given time horizon T, this article explores the relationship between the realized volatility (the volatility that will occur between t and t + T), the implied volatility (corresponding to at-t...
Asymptotic formulae for implied volatility in the Heston model
Asymptotic formulae implied volatility Heston model
2010/11/2
In this paper we prove an approximate formula expressed in terms of elementary functions for the implied volatility in the Heston model. The formula consists of the constant and first order terms in t...
Asymptotic Implied Volatility at the Second Order with Application to the SABR Model
Stochastic volatility Asymptotic expansion Heat kernel
2010/11/1
We provide a general method to compute a Taylor expansion in time of implied volatility for
stochastic volatility models, using a heat kernel expansion. Beyond the order 0 implied volatility which is...
Asymptotic Formulas with Error Estimates for Call Pricing Functions and the Implied Volatility at Extreme Strikes
Call and put pricing functions Implied volatility Asymptotic formulas Pareto-type distributions Regularly varying functions
2010/11/1
In this paper, we obtain asymptotic formulas with error estimates for the implied volatility
associated with a European call pricing function. We show that these formulas imply Lee’s moment formulas ...
Asymptotic Behavior of the Stock Price Distribution Density and Implied Volatility in Stochastic Volatility Models
true martingales one-dimensional diffusions separating times financial bubbles
2010/11/1
The stochastic exponential Zt = exp{Mt − M0 − (1/2)hM,Mit} of a continuous local martingale M is itself a continuous local martingale. We give a necessary and sufficient condition for the ...