AI stocks
Markets
S&P 500 concentration hits 35% as mega-cap dominance approaches dot-com extremes
Record indices mask historic fragility as top ten stocks control 40% of market value and breadth indicators flash warning signals.
AI
Markets
AI Stocks Now 57% of S&P 500, Creating Concentration Risk Beyond Dotcom Peak
JPMorgan analysis shows AI-adjacent equities exceed half the index's weight, surpassing 2000 tech bubble levels as passive flows amplify systemic correlation risk.