Samsung and SK Hynix Erase Early Losses as Payout Hopes Lift Seoul Chip Stocks

South Korea’s two largest chipmakers staged an intraday reversal on August 21, with Samsung Electronics finishing 3.9 percent higher and SK Hynix gaining 2.3 percent after both stocks opened in negative territory. The turnaround was powered less by chip fundamentals than by money flowing back to shareholders: expectations of stronger shareholder returns at Samsung, and a share repurchase program at SK Hynix reported at 40 trillion won — a sum that also sent shares of the mid-sized brokerage handling the buyback sharply higher for a second straight day.

An Opening Dip That Didn’t Last

Both memory giants started the Seoul session lower before buyers stepped in. SK Hynix flipped into the green and widened its advance through the day, trading up between 2 and 3 percent before settling at a 2.3 percent gain. Samsung Electronics followed a similar arc but with more force, closing up 3.9 percent as investors positioned for enhanced shareholder-return measures from the company.

The pattern — weakness at the open, conviction buying into the close — suggests the market treated the morning dip as an entry point rather than the start of a correction. For two stocks that dominate the Korean benchmark, that intraday behavior matters: together with Micron, Samsung and SK Hynix form the trio that controls the global memory-chip market, and their direction largely sets the tone for the KOSPI.

A 40 Trillion Won Repurchase and Its Unlikely Beneficiary

The most striking second-order effect showed up well outside the chip sector. SK Securities, appointed to broker SK Hynix’s reported 40 trillion won share repurchase, jumped more than 5 percent on August 21 — its second consecutive session of steep gains. For a brokerage of its size, the commission stream attached to executing a buyback of that scale is a material windfall, and traders repriced the stock accordingly. Separately, SK Securities lodged an investment prospectus under its shelf registration with the Financial Supervisory Service’s disclosure system during the same period.

The scale of the repurchase is easier to grasp against SK Hynix’s own financials: the company recorded roughly 97.15 trillion won in revenue for fiscal 2025, meaning the reported buyback amounts to a figure on the order of four months of sales. The chipmaker, which traces its roots to Hyundai Electronics’ founding in 1983 and joined SK Group in 2012, has rarely deployed capital toward its own shares at anything approaching this magnitude.

Payouts Are Becoming Korea’s Market Story

The August 21 session fits a broader shift in how Korean equities trade. Capital-return announcements have become reliable catalysts across the market, not just for the conglomerates. Coway, the home-appliance rental firm, offers a recent template: under pressure from activist fund Align Partners, it doubled its shareholder-return ratio from 20 percent to 40 percent in January 2025 and paired the move with a buyback-and-cancellation program. Investors rewarded the change, and similar expectations now attach quickly to any large listed company perceived to be sitting on excess capital.

That is the lens through which Samsung’s 3.9 percent surge should be read. The buying was anchored in anticipation of concrete return measures rather than any single earnings data point. When the two chipmakers that bookend Korea’s market both rally on payout logic in the same session — and a brokerage rallies simply for standing between one of them and its own shares — the message is that capital allocation, as much as the memory cycle, is now driving valuations in Seoul.