S&P 500 Marks Second Losing Week in 13 as AI Wreck Overwhelms Broad Market Gains
Despite nearly 66% of S&P 500 stocks climbing, the index posted its second losing week in 13 as heavy selling in AI megacaps like Micron completely negated the broad market rally. Oil prices dropped to pre-Iran crisis levels, boosting transportation and healthcare stocks, while Eli Lilly soared 7.1% on European drug approvals.