Mag 7 plunged 6% this week, dragging the Nasdaq down about 4%. Meanwhile, Mag 7's market cap evaporated by approximately $3 trillion this month, and its related ETF fell 13% in June, the worst monthly performance on record. AI investments are high but returns are unclear, compounded by the rise of sectors like chips and computing power, "AI beneficiaries," putting pressure on Mag 7's leadership. Analysts say this is more of a crowded position unwinding rather than a comprehensive de-risking, but volatility is expected to persist.