Key Takeaways
- • S&P 500 reached record closing high of 7,501.24 points on Thursday, breaking through the 7,500-point mark for the first time, driven by AI sector momentum and easing geopolitical tensions.
- • Nasdaq Composite and Nasdaq 100 also hit new record highs, with the Nasdaq 100 rising 519.677 points (1.76%) to close at 30,001.319, surpassing its previous record of 29,580.30.
- • Semiconductor sector led gains with over 80% year-to-date increase, highlighted by Micron Technology's market capitalization exceeding $1 trillion for the first time—joining only 13 other publicly listed companies at this valuation milestone.
- • Micron Technology surged 19.29% in a single session, with UBS raising its price target from $535 to $1,625, implying a potential market cap as high as $1.8 trillion; the company's share price has surged eightfold over the past 12 months.
- • Treasury yields declined as Fed rate-hike expectations cooled, with the 10-year U.S. Treasury note falling 7 basis points, supported by strong 2-year Treasury auction demand, while expectations of a U.S.-Iran peace agreement boosted overall market sentiment.
Summary
U.S. stock markets reached historic milestones in May 2026, with the S&P 500 breaking through the 7,500-point barrier to close at 7,501.24—a record closing high. The Nasdaq Composite and Nasdaq 100 similarly achieved new records, with the Nasdaq 100 gaining 519.677 points (1.76%) to close at 30,001.319, surpassing its previous record closing high of 29,580.30. The broad-based rally was propelled by sustained strength in artificial intelligence-related equities and reduced geopolitical risk following expectations of a U.S.-Iran peace agreement.
The semiconductor sector emerged as the primary driver of equity gains, posting an over 80% year-to-date advance. Memory chip manufacturer Micron Technology became the standout performer, closing with a 19.29% single-session gain that lifted its market capitalization above $1 trillion for the first time. This achievement places Micron among only 13 publicly listed companies globally to reach this valuation tier. The company's explosive performance—with share prices surging eightfold over the preceding 12 months—reflects institutional confidence in the semiconductor recovery and AI infrastructure buildout. UBS analyst Timothy Arcuri substantially raised his Micron price target from $535 to $1,625, implying potential market capitalization as high as $1.8 trillion.
Fixed income markets showed moderated risk premiums as expectations for additional Federal Reserve rate increases cooled. The 10-year U.S. Treasury yield declined 7 basis points, supported by robust demand in 2-year Treasury auctions, with shorter-duration yields outperforming longer maturities. Concurrently, crude oil recovered intraday losses to trade above $100 per barrel, while gold prices declined alongside a strengthening U.S. dollar. Market breadth extended favorably across materials, industrials, and financial sectors, with the market posting its eighth consecutive weekly gain, though some mega-cap technology names, including NVIDIA, underperformed the broader advance.
The semiconductor sector emerged as the primary driver of equity gains, posting an over 80% year-to-date advance. Memory chip manufacturer Micron Technology became the standout performer, closing with a 19.29% single-session gain that lifted its market capitalization above $1 trillion for the first time. This achievement places Micron among only 13 publicly listed companies globally to reach this valuation tier. The company's explosive performance—with share prices surging eightfold over the preceding 12 months—reflects institutional confidence in the semiconductor recovery and AI infrastructure buildout. UBS analyst Timothy Arcuri substantially raised his Micron price target from $535 to $1,625, implying potential market capitalization as high as $1.8 trillion.
Fixed income markets showed moderated risk premiums as expectations for additional Federal Reserve rate increases cooled. The 10-year U.S. Treasury yield declined 7 basis points, supported by robust demand in 2-year Treasury auctions, with shorter-duration yields outperforming longer maturities. Concurrently, crude oil recovered intraday losses to trade above $100 per barrel, while gold prices declined alongside a strengthening U.S. dollar. Market breadth extended favorably across materials, industrials, and financial sectors, with the market posting its eighth consecutive weekly gain, though some mega-cap technology names, including NVIDIA, underperformed the broader advance.
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