Tech's Grip On S&P 500 Hits Record 39% As AI Rally Pushes Concentration Beyond Dot-Com Peak - Marvell Tec - Benzinga

- The technology sector's share of the S&P 500 has reached an all-time high of 39%, surpassing previous peaks seen during the dot-com bubble and the energy sector's historical dominance.
- This record concentration is primarily driven by a massive rally in artificial intelligence leadership and companies like Marvell Technology.
- The trend highlights a significant market sensitivity to valuation, as the S&P 500 is currently trading at approximately 20.1 times forward earnings.
- Investors are now closely monitoring whether this extreme concentration in a few AI-driven tech giants creates systemic risk or sustainable long-term growth.
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