Hong Kong stocks tumbled on Thursday, with property firms and Chinese tech giants among the worst hit as the Federal Reserve's sharp interest rate hike raised the prospect of an extended period of tighter monetary policy.

The Hang Seng Index sank 2.2 percent, or 462 points, to 20,845.

The Shanghai Composite Index shed 0.6 percent, or 20 points, to 3,285, while the Shenzhen Composite Index rose 0.4 percent, or 7 points, to 2,106. (AFP)