Volatility Market Predictor

The 90 Percent Rule (16:14)

Posted on July 29, 2019 - 11:19am

By Lawrence G. McMillan

This article was originally published in The Option Strategist Newsletter Volume 16, No. 14 on July 27, 2007.

What Is A “90% Day?”

A “90% Day” must satisfy two criteria: 1) either advances or declines comprise more than 90% of all issues that moved that day (unchanged issues don’t count), and 2) either advancing or declining volume was 90% or more of the sum of advancing and declining volume.

Past performance is not necessarily indicative of future results.
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