Shifting the integration contours to v = 0 and v = 1, respectively, the complex line integrals
Question:
Shifting the integration contours to v = 0 and v = 1, respectively, the complex line integrals in Problem 16.2 become principal value integrals and pick up one half of the associated residue. The result is
where again k = log(S0/K) + bT. Show that the call price can be expressed in a completely analogous form to the generalized Black?Scholes-formula.
Problem 16.2
Show that the fair price of a European plain vanilla call option can be represented as
where I1(v) and I2(v) are the complex line integrals
evaluated along the contour v ? (0, 1).
ekи фо(u) du (v) = Re П0)- iu п кonf m eku фо(и — Re "Go(u – i)] et ek du, 1(v) = iu Co(K, T) = eb-1)T S, – e-rT K(I((v) + I½(v)),
Step by Step Answer:
The European plain vanilla call option price can be repres...View the full answer
Related Video
A call option is a type of financial contract that gives the holder the right, but not the obligation, to buy an underlying asset (such as a stock, commodity, or currency) at a specified price (called the strike price) within a specified period of time. When an investor purchases a call option, they are essentially betting that the price of the underlying asset will rise above the strike price before the option\'s expiration date. If the price of the asset does rise above the strike price, the investor can exercise the option by buying the asset at the strike price and then selling it at the higher market price, thereby earning a profit. Call options are often used as a speculative investment strategy, as they allow investors to potentially profit from the upward movement of an asset without having to actually own the asset itself. They are also commonly used as a hedging tool to protect against potential losses in a portfolio.
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