Delta-gamma VAR - 金融分析師
By Todd Johnson
at 2012-04-09T19:00
at 2012-04-09T19:00
Table of Contents
想請問一下板上高手們
derivatives的價值變動可以用泰勒展開式逼近寫成
df ≒△*dS + (1/2)*gamma*(dS^2)
可是long call option的風險值卻寫成
VAR(df) = |△|*VAR(dS) - (1/2)*gamma*VAR(dS^2)
我不知道後項的負號是怎麼來的,有高手可以幫忙解答一下嗎,謝謝@@
--
derivatives的價值變動可以用泰勒展開式逼近寫成
df ≒△*dS + (1/2)*gamma*(dS^2)
可是long call option的風險值卻寫成
VAR(df) = |△|*VAR(dS) - (1/2)*gamma*VAR(dS^2)
我不知道後項的負號是怎麼來的,有高手可以幫忙解答一下嗎,謝謝@@
--
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金融分析師
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