KOSPI's Push Past 7,000 Rides on Two Chipmakers and Thin Volume

The KOSPI’s latest run at the 7,000 level is being carried almost entirely by its two largest semiconductor names — Samsung Electronics and SK Hynix — while the rest of the market sits on its hands: trading value and volume on the index have fallen to their lowest levels of the year even as prices recover. The rebound, in other words, is real but narrow, and SK Hynix has given it an additional shareholder-return push, filing a treasury share acquisition decision and a share cancellation decision with Korea’s Financial Supervisory Service disclosure system.

A Rally Concentrated in Two Tickers

Index-level strength usually invites headlines about broad risk appetite. This episode looks different. The recovery toward 7,000 has been driven by Samsung Electronics (005930) and SK Hynix (000660), the two heavyweights that dominate KOSPI market capitalization. When the advance is that concentrated, the index can climb while most listed companies — and most retail portfolios — barely move.

The turnover data underlines the point. Both the value and the volume of shares changing hands have slipped to year-to-date lows during the rebound. Rising prices on shrinking turnover typically mean the move is powered by a small pool of committed buyers in a handful of names rather than by money rotating across the market. That does not invalidate the rally, but it does make the 7,000 threshold more fragile than the round number suggests: with fewer participants, it takes less selling to reverse the gains.

SK Hynix Adds a Buyback and Cancellation to the Mix

SK Hynix has reinforced its side of the rally with capital-return measures. Filings to the DART electronic disclosure system show the company lodged a material-fact report on a decision to acquire its own shares, together with a separate decision to cancel shares, alongside a fair-disclosure notice. Share cancellation is the stronger of the two signals for shareholders: unlike shares merely held in treasury, cancelled stock permanently reduces the share count, lifting per-share metrics for remaining holders.

The moves come from a position of scale. SK Hynix booked roughly 66.19 trillion won in sales in 2024 and employed 46,863 people as of that year, and it stands alongside Samsung Electronics and Micron as one of the world’s three dominant memory-chip producers, headquartered in Icheon, south of Seoul. For a company of that size, a buyback-plus-cancellation package functions both as a return of capital and as a statement of confidence in the memory cycle that has powered its share price.

Why the Memory Duopoly Sets the Market’s Ceiling

Korea’s index has long been geared to the memory cycle, a legacy of how both companies were built. The firm now known as SK Hynix began operations in February 1983 as Hyundai Electronics, climbed to ninth place among global DRAM makers by 1992, and passed into SK Group’s hands in 2012 after years of restructuring. Samsung’s roots go back further still, to the group’s founding in Daegu on March 1, 1938; today the conglomerate, chaired by Lee Jae-yong from its Samsung Town headquarters in Seoul, carries the world’s fifth most valuable brand as of 2024.

That history matters for interpreting the present rally. When global demand for memory chips runs hot, these two companies can lift the entire Korean index on their own — which is precisely what the current tape shows. The corollary is that the index’s fortunes at 7,000 are, for now, a referendum on the memory cycle rather than on the Korean economy at large.

The Question Thin Turnover Leaves Open

The uncomfortable combination — record-territory index levels, year-low participation — leaves two plausible paths. If the sidelined money treats the chipmakers’ strength and SK Hynix’s cancellation decision as confirmation, turnover recovers and the 7,000 level hardens into a floor. If it stays out, the index remains hostage to two order books. Either way, the next durable move will be visible first in trading value, not in the index print itself.