Tuesday's stock market sell-off had a familiar flavor to the market action seen so far this year. Six of the "Magnificent Seven" stocks — shares of Nvidia (NVDA), Tesla (TSLA), Alphabet (GOOG, GOOGL), Amazon (AMZN), Meta (META), and Microsoft (MSFT) — were all underperforming the S&P 500's (^GSPC) roughly 1% decline. The disparity marked the continuation of a trend seen throughout 2025. After two years of leading stocks' rallies, the market's largest technology companies are now leading the major indexes lower. With just two weeks left in the quarter, the Magnificent Seven are tracking for the worst performance against the...