Samsung, SK Hynix Rebound After 5% Rout as Buyback Support Nears End

The Quick Take

• Samsung Electronics recovered 0.93% to 272,500 won and SK Hynix edged down 0.17% after both fell over 5% the prior session on global tech weakness.
• Samsung buyback program ends around Oct 2 and SK Hynix soon after, removing an estimated 1.6 trillion won per day in institutional support through year-end.
• Analysts warn investors with 70-80% Samsung or SK Hynix concentration to trim at 300,000-320,000 won (Samsung) and 2.2-2.4 million won (SK Hynix) thresholds.
• SK Hynix US NAND subsidiary Solidaim IPO speculation resurfaced after the stock hit a 5% daily limit, compounding downside pressure on the parent.
• SK Group Chairman Chey Tae-won attended Korea Society gala with Nvidia CEO Jensen Huang, reaffirming SK-Nvidia AI memory partnership at a diplomatic forum.

Samsung Electronics and SK Hynix, the two dominant players in Korea's semiconductor sector, experienced a sharp one-day rout of 5.43% and 5.05% respectively before staging a partial recovery. Samsung bounced 0.93% to 272,500 won on ex-dividend day bargain buying, while SK Hynix recovered modestly, reflecting the broader KOSPI's sensitivity to global semiconductor sentiment. The two stocks collectively represent a disproportionate share of both the KOSPI index and retail investor portfolios, amplifying any technical or sentiment shift across the Korean market.

The end of Samsung's systematic buyback program removes approximately 1.6 trillion won per day in institutional support, signaling a material shift in the supply-demand balance for both stocks through year-end. With SK Hynix buyback also concluding in the near term, analysts warn of a buying void through December that could trigger intensified selling pressure if the KOSPI approaches the 7,000 resistance level. Rotation into semiconductor materials, components, equipment, and power equipment sectors is being recommended as a hedge against chip-stock overconcentration in retail portfolios.

The Solidaim IPO speculation remains the most significant near-term overhang for SK Hynix shareholders. A dual-listing of SK Hynix's US NAND flash subsidiary risks diluting existing shareholders and triggering a structural valuation discount on the parent company. Investors should monitor any official Solidaim announcements, the Oracle data center buildout timeline whose delays triggered this week's semiconductor sentiment weakness, and both companies' quarterly earnings releases scheduled for mid-October 2026.

Synthesized from 9 sources.