South Korea’s KOSPI Jumps More Than 5% as Chip Stocks Rebound

South Korea’s KOSPI rose more than 5% in early Tuesday trading, leading a sharp rebound in AI-linked markets as investors returned to chip stocks after last week’s selloff.

Samsung Electronics and SK Hynix each gained more than 5%, making the two semiconductor companies standout movers in the session. Their gains put South Korea’s chip sector at the center of the broader return to artificial intelligence-related investments.

South Korean shares followed a strong advance in U.S. technology stocks on Monday. Nvidia shares fell, but that decline did not stop the broader market rebound.

Lower oil prices provided further support. U.S. President Trump had said no additional strikes against Iran were needed, and oil prices moved lower. Anthropic released a new AI model ahead of its anticipated Wall Street listing, supporting sentiment around artificial intelligence.

At 7:37 p.m. ET Monday (00:37 UTC Tuesday), the KOSPI was up more than 5% during early trading in Seoul. The rally followed last week’s selloff and was led by heavyweight chip stocks.