Major Japanese and South Korean semiconductor equities declined significantly in Thursday trading, mirroring a substantial overnight selloff in US technology shares. The negative sentiment across Asia intensified on renewed supply chain competition concerns, following reports that Apple Inc. is negotiating to procure chips directly from Chinese manufacturers. Apple's stock rose 4.49% to $294.38 as of 03:40 UTC today, trading within a daily range of $289.19 to $296.59. The news prompted a broad reassessment of market share dynamics for established Asian chip suppliers.
Context — [why this matters now]
The current selloff occurs against a backdrop of persistent volatility in the global technology sector, driven by shifting geopolitical alliances and supply chain diversification efforts. The last comparable sector-wide decline in Asian chipmakers occurred on 12 May 2026, when the iShares MSCI South Korea ETF (EWY) fell 3.2% following tightened US export controls on semiconductor manufacturing equipment. The immediate catalyst for the 2 July movement was a sharp correction in the Nasdaq Composite, which fell over 2% in its Wednesday session, spilling over into Asian hours.
Reports of Apple's negotiations to source memory chips from China's Yangtze Memory Technologies Corp. (YMTC) directly triggered the specific competitive fears. This move signals a potential long-term strategy by major OEMs to diversify supply chains away from traditional Korean and Japanese partners, even as geopolitical tensions complicate such shifts. The market is particularly sensitive to any news suggesting a recalibration of the delicate US-China tech trade balance.
Data — [what the numbers show]
Key semiconductor constituents across the Nikkei 225 and KOSPI indices recorded heavy losses. Tokyo Electron Ltd. dropped 4.8%, while Advantest Corp. fell 5.1%. In South Korea, Samsung Electronics, a bellwether for memory chips, declined 3.5%. SK Hynix Inc. saw a more pronounced drop of 4.9%. The Topix Index closed down 1.8%, underperforming the region's Hang Seng Index, which declined a more modest 0.9%.
| Ticker | Price Change | Performance vs. Benchmark |
| | :--- | :--- |
| 8035.T (Tokyo Electron) | -4.8% | Underperformed Topix (-1.8%) |
| 6857.T (Advantest) | -5.1% | Underperformed Topix (-1.8%) |
| 005930.KS (Samsung) | -3.5% | Underperformed KOSPI (-2.1%) |
| 000660.KS (SK Hynix) | -4.9% | Underperformed KOSPI (-2.1%) |
The selloff was notably concentrated in firms specializing in memory and semiconductor fabrication equipment, which are most exposed to direct competition from Chinese manufacturers supported by state subsidies.
Analysis — [what it means for markets / sectors / tickers]
The primary second-order effect is a potential compression in valuation multiples for pure-play memory producers like SK Hynix and Micron Technology, which face the most direct competitive threat from YMTC's expansion. Equipment suppliers like Tokyo Electron and Advantest may see near-term order volatility as customers reassess capital expenditure plans in light of shifting end-demand. Conversely, the news is a net positive for Apple's margin narrative, contributing to its share price strength, as direct sourcing could potentially lower component costs over the long term.
A key counter-argument is that any large-scale shift in Apple's sourcing would face significant regulatory hurdles from US authorities, limiting the immediate material impact on incumbent suppliers' revenues. Flow data indicates institutional investors were net sellers of Korean semiconductor ETFs, while options activity spiked in US-listed iShares MSCI Taiwan ETF (EWT) as traders hedged exposure to broader Asian tech supply chains. The trade reflects a flight to perceived quality and geopolitically stable hubs.
Outlook — [what to watch next]
Traders will scrutinize the US monthly jobs report on 3 July for its implication on Federal Reserve policy and broader risk appetite, which heavily influences Nasdaq volatility. Samsung Electronics is scheduled to provide a preliminary earnings guidance update on 7 July, which will serve as a critical health check on memory pricing and demand. Key technical levels to monitor include the KOSPI's 200-day moving average at approximately 2,550 points; a sustained break below could signal further de-risking in Korean equities.
The ultimate impact on supplier relationships hinges on whether Apple's negotiations culminate in a firm contract and whether US regulators grant the necessary licenses for the technology transfer. Market participants will also monitor for any official statements from the US Commerce Department regarding its stance on such deals.
Frequently Asked Questions
How does Apple buying Chinese chips affect Samsung?
Apple diversifying its supply chain to include Chinese memory chip makers like YMTC introduces a new competitor for Samsung, which is a major supplier. This could erode Samsung's market share in the long term and increase pricing pressure, potentially impacting its revenue and profitability from the semiconductor division, which contributes significantly to its total earnings.
What is the historical performance of Asian chip stocks during US tech selloffs?
Asian semiconductor stocks have a high positive correlation with US tech peers, particularly the Nasdaq. Data since 2024 shows that on days the Nasdaq drops more than 2%, the iShares MSCI South Korea ETF (EWY) has declined an average of 1.8% the following session. The correlation is strongest for firms with high exposure to consumer electronics and memory markets.
Why did Apple's stock price go up while chip suppliers fell?
Apple's stock rose because securing a potential new source for components could improve its negotiating use with existing suppliers and lower future input costs, boosting margin expectations. This corporate-specific benefit for Apple is viewed as a competitive negative for its suppliers, creating a divergence in stock performance based on each company's position in the supply chain.
Bottom Line
Apple's supply chain diversification efforts triggered a risk-off rotation in Asian semiconductor stocks most exposed to competitive displacement.
Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.
