Hong Kong's Hang Seng Index closed down 0.6% on Thursday at 22,958 points, with the Tech Index falling 2.8%. Mainland Chinese equities also saw broad declines, with the ChiNext Index plunging 4.45% to 2,517 points, the STAR Market 50 Index dropping 4.3%, and the CSI 5G Communications Index plummeting 7.4%. The market sell-off in tech stocks was partly due to Samsung's weaker-than-expected chip performance dragging down regional markets, despite the Federal Reserve maintaining interest rates on Wednesday.