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arXiv 2301.02797q-fin.PRq-fin.CPq-fin.MF
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具有高斯求积的正态SABR模型下的期权定价

Option pricing under the normal SABR model with Gaussian quadratures

Jaehyuk Choi, Byoung Ki Seo

摘要:

随机α-β-rho(SABR)模型在期权交易中被广泛采用。特别是,标准($β=0$)SABR模型是利率的流行模型选择,因为它允许负资产值。SABR模型下的期权价格和delta通常通过渐近隐含波动率近似获得,但这些通常是不准确的和可套利的。利用最近发现的价格转移规律,我们提出了一个高斯积分格式的价格期权下正常的SABR模型。仅在49个点上的复合高斯求积和可以计算出非常准确的价格和无仲裁的delta。

英文摘要:

The stochastic-alpha-beta-rho (SABR) model has been widely adopted in options trading. In particular, the normal ($β=0$) SABR model is a popular model choice for interest rates because it allows negative asset values. The option price and delta under the SABR model are typically obtained via asymptotic implied volatility approximation, but these are often inaccurate and arbitrageable. Using a recently discovered price transition law, we propose a Gaussian quadrature integration scheme for price options under the normal SABR model. The compound Gaussian quadrature sum over only 49 points can calculate a very accurate price and delta that are arbitrage-free.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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