US stock futures dropped 2% Tuesday, following a 10% KOSPI fall, as concerns over the AI-driven rally's sustainability triggered a widespread tech sell-off across global markets.

(Bloomberg) -- Global stocks fell, led by steep losses in South Korea, as investors pulled back from some of this year’s top-performing tech companies on concern they’ve rallied…

South Korea’s Kospi index tumbled 10 per cent, triggering a 20-minute trading halt. Read more at straitstimes.com. Read more at straitstimes.com.

The Nasdaq dropped 2.2% amid steep falls in major semiconductor stocks.