On August 21, SK hynix rose 3.13% overnight, trading at 168.32 USD/share, with turnover of approximately $59.91 million.

On the news front, SK hynix announced plans to build a memory chip factory in Miyagi Prefecture, Japan, further expanding its global manufacturing footprint. This development comes on the heels of the company's landmark shareholder return program announced on August 19, under which SK hynix will repurchase and cancel 40 trillion KRW (approximately $29 billion) of treasury shares over a three-month period beginning August 20, with a cap of 24 million shares. The company also committed to returning more than 50% of cumulative free cash flow generated from 2025 through 2027 to shareholders — the largest shareholder return plan in Korean corporate history.

Goldman Sachs projects a shareholder return rate as high as 8% for 2027, while JPMorgan estimates additional return capacity exceeding 16% of market capitalization by end of 2027. S&P also upgraded the company's credit rating to A- with a positive outlook, reinforcing institutional confidence in the stock.

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