The weighting of artificial intelligence-related stocks in the S&P 500 has expanded to about 45 percent of market capitalisation, raising concerns that concentration in a handful of megacap technology stocks is becoming a key risk for U.S. equities. AI-linked companies already account for more than 40 percent of the index’s value. Analysts cite rising AI infrastructure spending, widening performance gaps and weaker diversification. Some warn that even a modest correction could trigger index deleveraging.

UAE investors have selectively bought AI and technology stocks despite rising tensions in the Middle East, showing a clear trend of rebalancing portfolios while keeping conviction in long-term growth themes. Data released by eToro showed higher allocations to software and AI infrastructure names that fell sharply in the first quarter. Crypto-related exposure also remained intact, while regulators and companies maintained operations even as security concerns and short-term risks persisted.