Matt Levine, Columnist

The VIX Is Not A Great Way to Measure Complacency

It is a great way to measure realized volatility though. I mean, trailing realized volatility.

A basic story that is told over and over again about financial markets is:

This is I think roughly the way to read the notion, which my Bloomberg View colleague Mohamed El-Erian examined today, that low readings on the VIX -- an index of implied volatility in short-dated S&P 500 index options -- mean that the market is "complacent." So: