Pricing American Options - an Important Fundamental Research in ...
Pricing American Options - an Important Fundamental Research in ...
Pricing American Options - an Important Fundamental Research in ...
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An Exact Solution <strong>in</strong> Series Exp<strong>an</strong>sion Form<br />
Optimal Exercise Price<br />
S f (τ) = 2 √ π<br />
e − 1 2 (γ−1)x− 1 4 (γ+1)2 τ<br />
∫ ∞<br />
η<br />
2∫ √ τ τ<br />
+<br />
−<br />
0<br />
( )<br />
φ n τ − η2<br />
4ξ<br />
[e 2 ∫ ∞<br />
(γ+1)2 η 4<br />
∞∑ 1<br />
{e (γ+1)2 τ 4<br />
n!<br />
] 2−ξ<br />
2<br />
dξdη<br />
[ n=0<br />
e − (γ+1)η<br />
4ξ<br />
√ π<br />
2 (γ + 1)√ τ − ηe (γ+1)2<br />
4 τ<br />
· e 2γ√ τ−η ξ erfc(ξ + (γ+1)<br />
2<br />
0<br />
∫ ∞<br />
0<br />
e − (γ+1)<br />
2 η<br />
f n (2 √ τ − η ξ, η)e (γ−1)√ τ−η ξ−ξ 2 dξ<br />
∫ ∞<br />
0<br />
f n (2 √ τ − η ξ, η)<br />
}<br />
√ τ − η)dξ<br />
]<br />
dη<br />
IWIF-II www.sw<strong>in</strong>gtum.com/<strong>in</strong>stitute/IWIF PPT 53/68<br />
Song-P<strong>in</strong>g Zhu, SMAS, April 26, 2007 0-52