05/20/2026
One of the complaints about the S&P 500’s rise last year following its tariff induced plunge in the spring was that the climb was driven by a very small number of stocks, especially those linked to AI and other new economy industries. The first weeks of 2026 saw a reversal of this trend, with participation broadening across the index and previously disregarded names catching a bid. Since the onset of the US military operation in Iran, however, the market has reverted to its hyper-focused ways, with gains concentrated in the semiconductor space and select technology companies — in fact, so far this year, semiconductor stocks have accounted for more than half of the S&P 500’s gain.
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