How to Calculate Value-at-Risk – Step by Step

How to Calculate Value-at-Risk – Step by Step

The power of value-at-risk lies in ints generality. Unlike market risk metrics such as the Greeks, duration or beta, which are applicable to only certain asset categories or certain sources of market risk, value-at-risk is general. It is based on the probability...
How to Measure VaR for a Pegged Currency

How to Measure VaR for a Pegged Currency

On Friday, I wrote a lighthearted piece challenging criticisms of value-at-risk. The Swiss had abandoned their currency peg; people had lost money; and VaR was being blamed—again. My message was essentially this If your VaR measure wasn’t flashing red alerts...
The Trend is Your Friend: Value-at-Risk and Amaranth

The Trend is Your Friend: Value-at-Risk and Amaranth

This week, Jeff Skilling received a well-deserved sentence of 24 years for his creativity at Enron. I wouldn’t take the sentence too seriously. Remember that Mike Milken—the Junk Bond King of the 1980s—was sentenced to ten years. After two years, he was...

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