Micron Technology Inc reported record quarterly results and projected fourth‑quarter revenue to exceed Wall Street estimates, emphasizing that demand for AI‑driven memory products will remain tight through at least 2027. The upbeat outlook lifted Micron’s share price roughly 12% in after‑hours trading and disclosed $22 billion in multi‑year customer commitments, reinforcing expectations of resilient AI infrastructure spending.
The positive guidance sparked a broad rally across Asian semiconductor stocks. In South Korea, memory‑chip leaders Samsung Electronics Co Ltd rose 5.3% to 358,500 won and SK Hynix Inc surged 9.2% to 2.818 million won, together representing more than 55% of the KOSPI’s market capitalization and propelling the benchmark index up 4.1%. SK Hynix also announced plans to raise up to $29.4 billion through a Nasdaq‑listed American Depositary Receipt offering, one of the largest U.S. equity issuances on record, with proceeds earmarked for expanding AI‑memory production capacity. Analysts noted the listing could broaden its investor base and narrow its valuation discount to U.S. peers. SK Hynix’s stock has appreciated over 800% year‑to‑date, recently overtaking Samsung as South Korea’s most valuable listed company.
In Japan, the semiconductor sector rallied strongly: Advantest Corp jumped 11.4%, Tokyo Electron Ltd rose 7.8%, and Kioxia Holdings Corp gained 8.8%, helping lift the Nikkei 225 by 3.8%. Kioxia, Japan’s largest memory‑chip maker, disclosed plans to list American Depositary Receipts by spring 2027. In Hong Kong, Semiconductor Manufacturing International Corp added 2.5% and Hua Hong Semiconductor Ltd climbed 4.2%, while Taiwan Semiconductor Manufacturing Co traded modestly higher at 0.4% according to Google data.
Overall, the rally eased concerns that earlier sell‑offs had pushed AI‑linked semiconductor valuations beyond fundamentals. The combined market moves underscore renewed investor confidence in AI memory demand and the growth prospects of memory‑chip manufacturers across the region.