SK Hynix Inc. signage on the firm’s workplace in Seongnam, South Korea, on Tuesday, June 30, 2026.
SeongJoon Cho | Bloomberg | Getty Pictures
South Korean semiconductor shares tumbled on Tuesday, extending a rout in chipmakers after one other weak session on Wall Road.
SK Hynix plunged greater than 10%, whereas Samsung Electronics fell over 8%. Different AI-linked names additionally got here underneath heavy promoting, with Samsung SDI dropping over 7%, LG Innotek sliding almost 14%, Seoul Semiconductor falling about 6% and LG Chem dropping greater than 4%.
Japan’s semiconductor sector additionally traded decrease. Tokyo Electron dropped greater than 9%, Advantest slid over 8%, whereas SoftBank Group, a serious AI funding proxy by means of its stake in Arm, fell almost 5%. Shares of Japan pc reminiscence producer Kioxia plunged greater than 15%. Taiwan’s TSMC was down over 2%.
The selloff adopted one other weak session for U.S. semiconductor shares on Monday. The VanEck Semiconductor ETF (SMH) misplaced greater than 2%, including to its Friday losses. AMD and Teradyne dropped 5% and 4%, respectively. Micron Expertise shed about 2%.
The weak point underscores how carefully Asian know-how shares and the U.S. AI commerce have turn out to be intertwined.
Samsung Electronics and SK Hynix are among the many world’s largest suppliers of high-bandwidth reminiscence chips utilized in AI servers, making their shares notably delicate to shifts in expectations for spending by U.S. hyperscalers.
Sharp swings in SK Hynix shares underscore the uncertainty surrounding the AI funding cycle, mentioned Acadian Asset Administration’s senior vp Owen Lamont, arguing that buyers nonetheless have little visibility into how the know-how will finally have an effect on the economic system.
“Proper now we’re dealing with an unbelievable uncertainty,” he instructed CNBC. “Nobody has any thought how this AI course of goes to have an effect on our economic system, and so I feel it should be rocky it doesn’t matter what.”
Lamont additionally added that leveraged exchange-traded merchandise could possibly be including to market swings, even when they aren’t solely accountable for SK Hynix’s latest volatility.
“Extra typically, your entire ecosystem of levered ETFs in Korea, additionally in Hong Kong and in america, are presumably including volatility and magnifying market fluctuations.”
