Nasdaq futures fell 1.04% to 27,897 in premarket trading after South Korea’s Kospi plunged 10.84%, underscoring how quickly pressure in semiconductor shares is spilling across regions. The decline sharpened an already visible split in U.S. equities, with technology under pressure even as the Dow held up.
The most important signal was not just the headline index move in Seoul, but the breadth of the selloff. Only 36 of 917 shares on the main board advanced, pointing to a market-wide liquidation centered on memory and chip supply chains rather than a narrow pullback in a few large-cap names.
That matters for investors because the current weakness is hitting one of the market’s most crowded trades: AI infrastructure and memory. With major U.S. technology earnings and a Federal Reserve decision due within days, the repricing is arriving at a highly sensitive moment for global equities.
Key Facts
- The Kospi closed at 6,023.66, down 732.09 points or 10.84%, after triggering a 20-minute marketwide circuit breaker.
- Nasdaq-100 futures traded at 27,897, down 293 points or 1.04%, while Dow futures rose 0.51% to 52,648.
- Samsung Electronics fell 14.4% and SK Hynix dropped 14.7%, with the two companies accounting for more than half of the Kospi’s weighting.
- ChangXin Memory Technologies closed its Shanghai debut at 49 yuan, up 466% from its 8.66 yuan IPO price, valuing the company at roughly 3.3 trillion yuan.
- Nvidia closed at $196.51 on July 28, down 4.99%, erasing about $250 billion in market value in one session.
Nasdaq Futures and the Global Chip Selloff
The market action points to a rotation rather than a broad-based flight from risk. On July 28, the Dow Jones Industrial Average rose 0.51% to 52,210.08, while the S&P 500 finished nearly flat at 7,413.18 and the Nasdaq Composite slipped 0.18% to 24,932.08. By early July 29 trading, that divergence widened as Nasdaq futures fell and Dow futures advanced.
The underlying reason is sector composition. The Dow has relatively little direct exposure to memory chips and AI infrastructure spending, while the Nasdaq-100 is packed with companies tied to semiconductor demand, hyperscaler capital expenditure, and the financing structures supporting data-center expansion. When the market questions those assumptions, index performance can split sharply even without a full macro shock.
The latest catalyst came from Asia. South Korea’s selloff was driven by severe losses in Samsung Electronics and SK Hynix, while Japan’s Nikkei 225 dropped 3.95% and chip-related names such as Tokyo Electron and Advantest fell by double digits. Australia’s S&P/ASX 200, which has limited semiconductor exposure, rose 0.60%, reinforcing the view that this is a chip-specific unwind rather than a uniform regional downturn.
The market is no longer pricing only AI demand; it is now pricing the cost, financing, and durability of the entire semiconductor buildout.
Why memory stocks became the epicenter
The biggest pressure point is memory. ChangXin Memory Technologies, or CXMT, surged 466% in its Shanghai debut, fueling concern that additional Chinese DRAM capacity could weigh on global pricing. CXMT held 7.67% of the global DRAM market in 2025 and reported first-quarter operating profit of 35.43 billion yuan after a loss a year earlier.
That debut landed alongside reports of domestic Chinese progress in immersion deep-ultraviolet lithography equipment. For investors, the concern is not that Chinese producers immediately match the most advanced global players, but that added conventional DRAM output could reduce scarcity and compress margins. That helps explain why Micron and other memory-linked names were hit harder than the broader semiconductor complex.
In U.S. premarket trading, Micron fell between 4.4% and 4.9%, Western Digital dropped 4.9%, Seagate lost 4.11%, and the Roundhill Memory ETF sank 6.92%. By contrast, the broader iShares Semiconductor ETF fell 2.4%, showing that damage was concentrated in the memory segment rather than evenly spread across all chip stocks.
Implications for Investors
For portfolios, the main takeaway is that valuation risk in AI and semiconductor names is expanding beyond earnings expectations. Investors are now examining whether demand growth is being supported by healthy end-market economics or by increasingly complex capital and credit arrangements. That distinction is central to how high-multiple technology shares trade in the second half of 2026.
Nvidia has become a focal point in that debate. Reports that the company has discussed guaranteeing roughly $250 billion in lease payments tied to a 10-gigawatt Ohio data-center campus for OpenAI, along with possible financing support for as much as $350 billion in GPU purchases, shifted attention from chip demand to balance-sheet risk. Even if those talks remain preliminary, the market reaction suggests investors are assigning a lower quality multiple to revenue growth that may depend on vendor-backed financing.
At the same time, the pullback has not spread evenly across the market. Defensive and cash-generative companies have drawn support. Coca-Cola rose more than 3% in premarket trading after reporting adjusted earnings of $0.97 per share on $13.38 billion of revenue and raising full-year guidance. Boeing also impressed with $631 million in free cash flow and a record $715 billion backlog. That contrast suggests investors are rotating toward businesses with clearer demand visibility and less exposure to semiconductor pricing or AI capital expenditure cycles.
Several near-term catalysts could determine whether the selloff deepens or stabilizes. The Federal Open Market Committee concludes its two-day meeting on July 30, with the policy rate currently at 3.50% to 3.75%. At the same time, results from Microsoft, Meta, Apple, and Amazon will test whether hyperscaler spending remains strong enough to support the AI narrative despite rising scrutiny around returns and financing.
For now, investors should watch three things closely: memory price expectations, the tone of large-cap technology earnings on capital spending, and whether the weakness remains concentrated in chip names or broadens into a wider de-risking move. If the damage stays narrow, the episode may look like a valuation reset. If it spreads, it could mark a more consequential turn in global equity leadership.
The next 72 hours are likely to be decisive. A hawkish Fed surprise or weaker-than-expected commentary from major technology companies could extend the semiconductor unwind, while solid capex guidance and calmer credit concerns may help stabilize the trade.