JPMorgan says broad tech and AI stocks stalled in Q3 after derating

Broad technology and AI-related stocks stalled through Q3 after a derating, JPMorgan strategist Mislav said, per Sept. 28 MarketWatch report. Derating means investors pay less for each dollar of expected profit. For savers in index funds, that can drag returns even if earnings hold. I'm skeptical this resolves quickly while crowding stays high.