How Price Gaps are Reflecting Event Risk, in Five Charts
By Blu Putnam
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Here is the management challenge for event risk. 

Volatility typically reflects a simple measurement of the average of the ups and downs. Statisticians use the standard deviation.  Traders look at implied volatility based on options.

The standard deviation is an average of ups and downs, and unfortunately, it is an extremely poor measure of the type of volatility we are now seeing. 

What we are seeing are a few really big, abrupt price moves and then a bunch of small ones.

Nasdaq
China

The Black-Scholes-Merton option models even assumes these price gaps never occur. They do, and price gaps are happening more and more in this event risk environment.

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About the author

Blu Putnam
Blu Putnam, Chief Economist, CME Group

Bluford (Blu) Putnam has served as Managing Director and Chief Economist of CME Group since May 2011. He is responsible for leading economic analysis on global financial markets by identifying emerging trends, evaluating economic factors and forecasting their

 

 

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