The Nasdaq Composite fell 1.2%, or 302.47 points, to close at 25,818.69 on July 7-8, 2026, as artificial intelligence stocks tumbled amid mounting valuation concerns that overshadowed record corporate earnings.
Chipmakers including Micron Technology led the decline, dragging down the tech-heavy index while the S&P 500 fell 0.5% and the Dow Jones Industrial Average dropped 130.76 points, or 0.2%, to 52,925.15. The pullback reflected a broader shift in investor sentiment: strong fundamentals no longer guaranteed rising stock prices.
Samsung Electronics, the world’s largest memory chipmaker by sales, reported a 19-fold jump in Q2 2026 operating profit to 89.4 trillion won, or approximately $58.4 billion, driven by surging demand for AI-related semiconductor chips. Yet the company’s shares fell on the same day, signaling that even record earnings failed to overcome concerns about AI stock valuations. According to Reuters, Samsung’s profit surge was expected to reach $56.35 billion for the second quarter—a historic result that ordinarily would have lifted the broader market. Instead, investors viewed the earnings beat through a lens of caution.
The disconnect highlighted a central tension in 2026’s market: while AI chip companies are generating unprecedented profits from data center demand, their stock prices have climbed to levels that many analysts and investors now view as disconnected from fundamentals. Semiconductor and memory-related tech stocks, which had lifted markets earlier in the week, reversed sharply as traders reassessed whether current valuations could be justified by future earnings growth.
Micron Technology, another major memory chipmaker, was among the hardest hit as investors cited concerns over AI capex digestion cycles and slowing demand growth. The sell-off spread globally, with international markets also retreating as the AI trade faced renewed scrutiny. A recent survey by Investing.com found that 57% of respondents identified a plunge in tech valuations driven by waning enthusiasm around AI as the largest risk facing markets in 2026.
The pullback echoed earlier volatility in the sector. In late June, a similar wave of profit-taking in semiconductor stocks had triggered a broader market decline, with investors questioning whether the enormous spending levels at AI companies and the high valuations of AI stocks could be sustained. That earlier sell-off saw the Nasdaq drop 0.7% to 1.2% in a single day as investors rotated out of the highest-flying names.
Analysts attributed the latest decline to a reality check after months of AI-driven gains. The semiconductor sector’s dramatic reversal in early July 2026 underscored mounting valuation concerns, according to reporting from Intellectia AI, even as record earnings demonstrated the genuine profitability of the AI infrastructure boom. Investors appeared to be weighing the certainty of today’s profits against the uncertainty of sustaining such extraordinary growth rates in future quarters.
Sources
- Yahoo Finance Singapore — Nasdaq Composite close at 25,818.69, down 1.2% or 302.47 points, on weak AI performance
- Reuters — Samsung’s 19-fold jump in Q2 2026 operating profit and market reaction; Nasdaq decline driven by chip stock losses and AI worries
- Barron’s — Nasdaq Composite fell 1.2% as chip rebound fizzled
- U.S. News & World Report — AI stocks dragged Nasdaq composite down 1.2% while Dow fell 130 points
- The Cryptonomist — Samsung’s Q2 2026 operating profit reached 89.4 trillion won, up approximately 1,810% year-over-year
- Investing.com — 57% of survey respondents identified AI valuation crash as the biggest market risk in 2026
- Intellectia AI — Semiconductor sector experienced dramatic reversal in early July 2026 amid valuation concerns
