U.S. Stocks Advance as Amazon Nears $3 Trillion Valuation While Chip Shares Retreat
U.S. stocks rose at the start of August, with Amazon approaching a $3 trillion valuation as investors awaited earnings. Micron, Broadcom and the broader semiconductor index fell, creating a divergence between mega-cap platform shares and chip stocks.
MSA market desk
Desk brief
U.S. equities opened August on a firmer footing as investors positioned for a heavy earnings calendar and continued to assess the commercial payoff from artificial-intelligence investment. The S&P 500 gained about 1% in morning trading, while the Nasdaq 100 rose more modestly as weakness in major semiconductor names limited technology-sector momentum.
Amazon remained a focal point after a powerful 2026 rally propelled its market value toward the $3 trillion threshold. Investor optimism has centered on artificial-intelligence demand across Amazon Web Services, custom silicon, logistics and advertising, although valuation remains sensitive to earnings execution and the pace of cloud growth.
Micron Technology and Broadcom declined, contributing to a drop in the Philadelphia Semiconductor Index. The contrasting performance highlights a market increasingly differentiating between AI-linked beneficiaries: broad consumer, cloud and platform exposure supported mega-cap shares, while chip valuations faced profit-taking and heightened expectations ahead of upcoming results.
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