Nasdaq tumbles more than 2% in opening trading as global tech sell-off deepens

Global stocks fell sharply Tuesday and appeared poised to extend losses in a sell-off driven by tech heavyweights. The Nasdaq composite index was down more than 2 percent at the market’s open.

South Korea’s KOSPI index fell nearly 10 percent, with Samsung Electronics and semiconductor maker SK Hynix each losing more than 12 percent of their value. The sell-off triggered a trading halt Tuesday afternoon, according to South Korean news agency Yonhap.