Why S&P 500, Nasdaq dropped while Dow Jones gained today - US stock market mixed close explained

S&P 500, Nasdaq and Dow Jones on May 12: US stocks closed mixed as tech momentum cooled amid rising energy prices and fresh inflation data. The S&P 500 and Nasdaq dipped, while the Dow Jones edged ...
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Explained - The Wall Street Journal report that sent tech stocks tumbling on Wall Street

The Dow Jones, which does not have a big tech concentration, fell 240 points from the highs of the day to end below the flat line, while the S&P 500 and Nasdaq saw losses of 0.5% and 0.9% respectively ...