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Santoli’s Wednesday market notes: Investors buy the dip, but the path for September is uncertain

Traders on the floor of the New York Stock Exchange, June 25, 2021.
Source: NYSE

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

  • The market is making a bid to disturb a couple of persistent patterns that we and many, many others have observed: the "sell the open" intraday weakness and the tendency for the S&P 500 to be weak into the 18th/19th of a month coinciding with options/futures expiration.

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