Mike Santoli's market notes: Don't make too much of the rally, taking the bull case on virus spread

People walk along Wall Street in lower Manhattan on September 21, 2020 in New York City.
Spencer Platt | Getty Images

This is the daily notebook of Mike Santoli, CNBC's senior markets commentator, with ideas about trends, stocks and market statistics.

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  • Broad rally feeding off some oversold conditions, a feeling that a 10% gut check was passed, seasonal patterns turning less negative and tendency of market to bounce after four straight down weeks.