SK hynix responded to the latest collapse in AI memory stocks with one of the biggest capital-return moves the sector has produced: a 40 trillion won, or roughly $28.6 billion, share repurchase and cancellation program.
The timing matters. SK hynix disclosed the plan after the Seoul market closed Wednesday, meaning the stock’s roughly 9.8%-9.9% regular-session decline came before the announcement rather than in response to it. The first clean market reaction came in the U.S., where SK hynix ADRs initially rose more than 5% in premarket trading before much of that gain faded during the regular session.
That still makes the announcement an important second test for a memory trade that has suddenly become much harder to support with good news alone.
SK Hynix Is Returning 40 Trillion Won to Shareholders
SK hynix’s board approved the repurchase and cancellation of 40 trillion won of shares on August 19. Based on the previous day’s closing price, the program covers about 24.07 million shares, or roughly 3.3% of the company’s 730.5 million issued shares. Purchases are scheduled to run from August 20 through November 19, with all acquired shares cancelled afterward.
SK hynix described the program as the largest treasury-share cancellation ever undertaken by a listed South Korean company. That is the company’s stated scope, rather than an unrestricted claim that this is the world’s largest or a record buyback of any kind.
The company is also increasing its shareholder-return commitment from within 50% of cumulative free cash flow generated from 2025 through 2027 to more than 50%, using buybacks, cancellations and dividends. Fixed and special dividends are also under consideration. SK hynix reported about 69 trillion won of net cash at the end of Q2.
The Memory Trade Is No Longer Rewarding Cash Flow Automatically
The scale of the buyback is difficult to dismiss. What is more revealing is how quickly the initial reaction faded.
SK hynix’s U.S. ADR rose 5.56% in premarket trading after the announcement. Much of that gain faded during the regular session, when the ADR traded as high as $163.80.
That follows Tuesday’s violent reversal across the same memory and storage complex. SanDisk lost about 8.3%, Western Digital about 7% and Seagate about 6% as investors continued unwinding one of 2026’s strongest AI-linked trades. The Roundhill Memory ETF also fell about 6%.
FinanceFeeds has previously examined the same pressure across SanDisk and Western Digital, where record revenue and strong guidance were no longer enough to prevent heavy selling.
Wednesday extends that argument further. SK hynix did not announce weak earnings or a demand warning. It announced a direct transfer of AI-memory cash generation back to shareholders.
Yet the bid still struggled to hold.
The KOSPI Selloff Makes the Signal Noisier
There is an important qualification. SK hynix was not falling alone.
The KOSPI dropped 5.80% Wednesday to 6,471.17 as rising global bond yields pressured technology and growth stocks. Trading Economics put SK hynix’s Seoul decline at 9.93%, while Samsung Electronics closed down 7.82% at 247,500 won.
The move therefore cannot be read purely as investors abandoning SK hynix’s fundamentals. Macro pressure and a broader semiconductor unwind were substantial.
But that does not make the capital-return announcement irrelevant. It changes the question.
Earlier in the AI-memory cycle, record earnings, higher pricing and rapidly expanding free cash flow were enough to support higher valuations. Now investors are being handed that cash directly and are still reducing exposure.
SK hynix’s 40 trillion won program shows the cash generation is real. The market reaction shows that cash generation is no longer the only thing being priced.