Hong Kong stocks opened slightly higher on Tuesday on mild bargain-buying following a recent sell-off, though traders remain concerned about the US Federal Reserve's determination to ramp up interest rates to tackle inflation.

The Hang Seng Index edged up 0.38 percent to 20,020.

The Shanghai Composite Index added 0.24 percent, to 3,265, while the Shenzhen Composite Index ticked up 0.34 percent, to 2,132. (AFP)