The Nasdaq Composite pulled back 0.94% to test the 26,000 level on Monday, as profit-taking in high-flying semiconductor stocks offset strength in cloud security and defensive technology names, marking a tactical shift in market positioning after months of AI-driven gains.
The Nasdaq Composite’s decline was led by a sharp selloff in chip stocks that have powered the broader rally throughout 2026. Micron shares dropped 5% after touching intraday highs near $757, extending a retreat from all-time peaks around $818 reached earlier this month. The memory chipmaker’s stumble came despite year-to-date gains exceeding 740%, underscoring the velocity of recent profit-taking.
Applied Materials fell 5.23% to $413.80, while Marvell Technology shed 4.16% to $169.54, both surrendering earlier session gains. The Philadelphia Semiconductor Index declined approximately 3% in recent sessions, with the sector-wide weakness reflecting a broader reassessment of valuations following an extraordinary run in AI-exposed equities.
Regeneron Pharmaceuticals posted the steepest decline among major Nasdaq components, plunging 10.29% to $626.43 in a move that appeared technical rather than fundamental, given the absence of negative clinical trial data or regulatory setbacks in recent days.
Countering the semiconductor weakness, Zscaler surged 7.20% to $172.64, leading the Nasdaq 100‘s gainers Cognizant Technologies advanced 6.13% to $50.02, while Verisk Analytics climbed 4.46% to $169.80.
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Behind The Move
The semiconductor retreat reflects multiple converging pressures on a trade that had grown increasingly crowded. Micron’s extraordinary gains have left the stock vulnerable to sharp reversals on any negative catalyst. The company has committed approximately $25 billion in capital expenditure for 2026 to expand high-bandwidth memory production for AI data centers, a bet on sustained demand that has underpinned bullish analyst price targets from Bank of America and Deutsche Bank in recent weeks.
However, reports emerging from the recent Trump-Xi summit have introduced fresh geopolitical uncertainty. News that Nvidia’s H200 AI chip deals with Chinese companies collapsed following the diplomatic meetings raised concerns about the stability of China-related semiconductor demand. For memory suppliers like Micron, any weakening in Chinese data center buildouts could pressure volume expectations despite robust pricing in DRAM and NAND markets.
Applied Materials and Marvell Technology, both key beneficiaries of AI-driven capital spending on wafer fabrication equipment and custom accelerators respectively, have experienced similar pullbacks. Applied Materials’ recent earnings showed continued strength in advanced-node equipment orders, but commentary around mixed visibility in legacy nodes and consumer-exposed segments tempered enthusiasm. Marvell’s networking silicon for hyperscaler data centers remains in high demand, yet the stock’s triple-digit percentage gains over the past year have made it sensitive to any hint of decelerating capital expenditure growth.
For the Nasdaq Composite, the 26,000 level has emerged as a key technical support zone. A sustained break below could trigger additional selling, while a hold and rebound would suggest the pullback is a healthy consolidation within an intact uptrend.
