企管系 以後想走 財金OR財工 - 金融分析師

By Emily
at 2009-03-18T22:28
at 2009-03-18T22:28
Table of Contents
推 sheehan:財工沒那麼難啦........... 啥數學系60% 資工系20%... 03/18 20:26
→ sheehan:大學階段把機率學好比較重要 03/18 20:26
→ dos792: s 兄要不要試試不用change of measure解釋black formula? 03/18 20:45
s 兄或許是指如果只是要應用工具而非瞭解工具的由來,財工就沒那麼難。
工具是指Ito's lemma、Girsanov's Theorem、change of numeraire 及
Bayes's Theorem of conditional expectation。
以 money marekt account 為 numeraire 並且配合 Girsanov's Theorem 可以得
到 spot risk-neutral measure 之下的股價動態,這足以導出 Black-Scholes
Option Pricing Formula 的 N(d2)。接著以股價為numeraire或者運用 Bayes's
Theorem of conditional expectation 再搭配 Girsanov's Theorem,可以求
出 N(d1)。如果是 Black Caplet Formula 就必須在 forward risk-neutral
measure 之下評價會比較方便。
不知道 d 兄指的用change of measure 解釋 Black formula,是上述的內容嗎?
感覺好像不太是,那不過是一般教科書都看得到的內容。想知道 d 兄是否有新穎
的解釋方式 呵呵
--
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金融分析師
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