Hong Kong stocks opened on Tuesday by clawing back some of the previous day's big losses, helped by a rally in tech firms, with eyes firmly on the US Federal Reserve's policy meeting later in the week.

The Hang Seng Index rose 0.6 percent to 22,190.

The Shanghai Composite Index dipped 0.1 percent, or 3 points, to 3,266, while the Shenzhen Composite Index eased 0.2 percent, or 5 points, to 2,145. (AFP)