Showing posts with label Copula Function. Show all posts
Showing posts with label Copula Function. Show all posts

Wednesday, April 1, 2009

The formula that destroyed Wall Street...

The formula that destroyed Wall Street...

I found my way to this article[link]on David Li from Tan Kin Lian's blog. It talks about how a maths whiz created a formula that allowed risks to be computed quickly and that led to growth of the securitization market that destroyed Wall Street. I wasn't very happy with the explanation of his formula in the article - it didn't give me a complete understanding of the formula. I found another article in Wired Magazine that discusses how this formula killed Wall Street [Link].....again not to thorough in its explanation of the formula.


I searched and found David Li's orginal paper on "On Default Correlation: A Copula Function Approach"[Link]. I'll do a summary of this paper and my understanding of what went wrong...

http://forums.delphiforums.com/sunkopitiam/messages?msg=25791.1