AI Stocks Hit 45% of S&P 500 Market Cap, Record High on May 11

According to BlockBeats, on May 11, artificial intelligence stocks reached 45% of the S&P 500 index's total market capitalization, marking a historic high for a single sector theme. From May 2024 to June 2026, the S&P 500 gained 142% cumulatively, but excluding AI stocks, gains fell to just 16%.

Meanwhile, AI-related debt of $1.4 trillion poses a potential risk, encompassing corporate bonds issued by hyperscalers and leveraged positions in AI-related stocks. If credit conditions tighten or major AI companies disappoint on earnings growth, this debt could face rapid unwinding.