A sell-off in AI-related stocks deepened, with investors pulling back from major chipmakers and putting fresh pressure on South Korea’s market. Shares in SK Hynix and Samsung fell sharply, underscoring how quickly sentiment around the semiconductor sector has weakened.

The declines in those two heavyweight names helped push South Korea’s Kospi down by more than 10%. Because SK Hynix and Samsung are central to the country’s technology and export story, sharp moves in their shares can have an outsized effect on the broader index.

The latest drop points to a wider retreat from AI chip stocks after a period of strong enthusiasm. When investors start cutting exposure to semiconductor companies seen as key AI beneficiaries, the selling can spread across related names and weigh on regional benchmarks.

For markets in South Korea, the move highlights the importance of chipmakers to overall performance. With SK Hynix and Samsung under pressure, the AI stock sell-off has become a broader market story rather than a narrow decline limited to a few technology shares.