SK Hynix stock fell 3.03% to close at 1,216,000 won on Friday, November 13, as South Korea’s Kospi reversed a sharp morning rally and finished below 5,300. The benchmark index closed at 5,290.53, down 52.20 points, or 0.98%, after reaching an intraday high of 5,504.44.
The reversal was particularly pronounced in semiconductor shares. SK Hynix, which had gained more than 4% during early trading, finished 38,000 won below Thursday’s closing price of 1,254,000 won. Samsung Electronics also surrendered its morning advance, closing down 0.96% at 206,000 won.
South Korean market reports linked the retreat to uncertainty following Jensen Huang’s departure as Nvidia chief executive and concerns that the United States could tighten semiconductor export restrictions on China. Those explanations reflect reported market sentiment rather than an independently established cause of Friday’s selling.
Kospi Reverses From 5,504 as Foreign Investors Turn Sellers
The Kospi opened at 5,452.41, up 2.05% from Thursday’s close of 5,342.73. Buying in semiconductor heavyweights initially lifted the index another 52 points to 5,504.44, extending the morning advance to approximately 3.03%.
That rally unraveled as the session progressed. The benchmark crossed into negative territory around 12:35 p.m. local time and eventually finished 213.91 points below its intraday peak, a decline of approximately 3.89% from the high.
Foreign selling was a prominent feature of the reversal. Overseas investors, who had supported the early advance, shifted toward net selling as the afternoon session developed. Semiconductor stocks were among the main contributors to the index’s decline, although the weakness was not uniform across the broader market.
The Kosdaq also surrendered most of its gains but managed to finish 0.45% higher at 699.66. On the Kospi, KB Financial Group rose 4.74% and Hyundai Motor gained 1.13%, demonstrating that Friday’s losses were concentrated in several heavyweight sectors rather than every part of the market.
The decline followed Thursday’s 0.61% Kospi loss, when Samsung Electronics and SK Hynix moved in opposite directions. As FinanceFeeds reported on November 12, Samsung had gained 0.97% while SK Hynix declined 1.80%. Friday’s session brought both semiconductor leaders into negative territory.
SK Hynix Faces Nvidia Uncertainty and China Export-Control Concerns
The market’s attention remains focused on the consequences of Nvidia’s leadership change. Huang resigned as chief executive on November 12, with Chief Financial Officer Colette Kress assuming the role on an interim basis, as detailed in FinanceFeeds’ coverage of Nvidia’s CEO departure.
Nvidia shares had fallen more than 14% intraday on Thursday before recovering to close down 4.34%. The Philadelphia Semiconductor Index also declined 0.54%, providing a weaker overnight backdrop for Asian chipmakers.
For SK Hynix, the significance extends beyond Nvidia’s share price. The Korean memory manufacturer is a major supplier of high-bandwidth memory, or HBM, used alongside advanced AI processors. Nvidia’s product development plans, customer demand and procurement decisions therefore have implications for SK Hynix’s future revenue and capacity requirements.
South Korean financial reporting also associated Friday’s selling with concerns that the controversy surrounding Nvidia could accelerate tighter U.S. restrictions on semiconductor exports to China. The concern relates partly to Huang’s previous role in advocating access to the Chinese market.
However, expectations of tougher restrictions should not be confused with a new regulatory decision. Friday’s market movement does not establish that Nvidia has reduced its memory purchases, that SK Hynix has lost orders or that additional U.S. export controls have taken effect.
The distinction matters because restrictions on sales of advanced processors to China and changes in demand for HBM across the global AI industry are related but separate risks. The financial implications for Korean suppliers would depend on the scope of any new restrictions and how Nvidia and its customers respond.
President Lee’s Korea Exchange Visit Fails to Sustain the Rally
The market also reversed despite a visit by South Korean President Lee Jae-myung to the Korea Exchange in Yeouido, Seoul, on Friday morning.
Speaking at a meeting focused on capital-market development, Lee reaffirmed his administration’s commitment to improving the structure and operation of South Korea’s equity market. His remarks formed part of the government’s broader effort to strengthen investor confidence and address longstanding concerns about Korean stock valuations.
The Kospi nevertheless turned lower during the afternoon, suggesting that the policy message was insufficient to sustain the morning’s buying interest.
For investors, the contrast between the president’s market-reform agenda and the session’s semiconductor-led selloff illustrates the competing forces affecting Korean equities. Domestic reforms may support valuations over time, while changes in global technology sentiment, foreign portfolio flows and U.S. trade policy can still exert immediate pressure on the country’s largest listed companies.
What SK Hynix Investors Should Watch Next
SK Hynix’s 3.03% decline was considerably larger than the Kospi’s 0.98% loss, reflecting the stock’s greater sensitivity to concerns surrounding Nvidia and the AI semiconductor supply chain.
The company remains exposed to strong structural demand for advanced memory, but the value investors assign to that demand depends on confidence in future orders, pricing and production requirements.
The next developments to monitor include Nvidia’s forthcoming earnings report, any statements from its interim leadership regarding product roadmaps and suppliers, and potential changes to U.S. semiconductor export policy.
Foreign investor flows will also be important after Friday’s reversal. The Kospi’s failure to hold 5,500 and its close below 5,300 show how quickly early buying interest can disappear when large technology stocks encounter selling pressure.
For SK Hynix, the immediate question is whether Friday’s decline primarily reflects uncertainty surrounding Nvidia’s leadership or the beginning of a broader reassessment of AI infrastructure spending and memory demand. The closing price confirms the market’s negative reaction, but subsequent company guidance and customer orders will provide stronger evidence of any lasting financial impact.