The Black-Scholes-Merton dual equation

Fuente: arXiv
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Autores principales: Guo, Shuxin, Liu, Qiang
Formato: Preprint
Publicado: 2019
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author Guo, Shuxin
Liu, Qiang
author_facet Guo, Shuxin
Liu, Qiang
contents We derive the Black-Scholes-Merton dual equation, which has exactly the same form as the Black-Scholes-Merton equation. The novel and general equation works for options with a payoff of homogeneous of degree one, including European, American, Bermudan, Asian, barrier, lookback, etc., and leads to new insights into pricing and hedging. Perceptibly, a put-call equality emerges - all the put options can be priced as their corresponding calls by simultaneously swapping stock price (dividend yield) for strike price (risk-free rate), and vice versa. Equally important, we provide simple analytic formulas for hedging parameters delta and gamma, which elevate the put-call equality to true practical applicability. For futures options, the put-call equality leads to "symmetric" properties between puts and calls or among puts (calls).
format Preprint
id arxiv_https___arxiv_org_abs_1912_10380
institution arXiv
publishDate 2019
record_format arxiv
spellingShingle The Black-Scholes-Merton dual equation
Guo, Shuxin
Liu, Qiang
Pricing of Securities
Mathematical Finance
Risk Management
91G20
We derive the Black-Scholes-Merton dual equation, which has exactly the same form as the Black-Scholes-Merton equation. The novel and general equation works for options with a payoff of homogeneous of degree one, including European, American, Bermudan, Asian, barrier, lookback, etc., and leads to new insights into pricing and hedging. Perceptibly, a put-call equality emerges - all the put options can be priced as their corresponding calls by simultaneously swapping stock price (dividend yield) for strike price (risk-free rate), and vice versa. Equally important, we provide simple analytic formulas for hedging parameters delta and gamma, which elevate the put-call equality to true practical applicability. For futures options, the put-call equality leads to "symmetric" properties between puts and calls or among puts (calls).
title The Black-Scholes-Merton dual equation
topic Pricing of Securities
Mathematical Finance
Risk Management
91G20
url https://arxiv.org/abs/1912.10380