May 4 (Reuters) - Hong Kong stocks fell on Wednesday with technology shares leading the slide as investors awaited the U.S. Federal Reserve's interest-rate decision.

** The Hang Seng Index fell 1.33% to 20,820.32 in the morning session. The Hang Seng China Enterprises Index dropped 1.95% to 7,125.85.

** Mainland Chinese markets are closed for a holiday. Trading will resume on Thursday.

** HSBC Hong Kong shares rose as much as 3.1% after it said it will commence a share repurchase of up to $1 billion and has entered into agreements with Merrill Lynch International to handle the buyback beginning on May 4.

** Shares of China's Meituan fell 5.9% and JD Health International plunged 11.6% as their shareholders cut long positions.

** The three biggest H-shares percentage decliners were JD Health, Innovent Biologics Inc, down 7.49%, and Meituan.

** The top gainers among H-shares were Postal Savings Bank of China Co Ltd, up 2.4%, followed by ENN Energy Holdings Ltd, which rose 1.22% and China Resources Land Ltd , up 1.09%. ** The sub-index of the Hang Seng index tracking energy shares dipped 0.4%, the IT sector fell 3.6%, and the Hang Seng Tech Index dropped 3.1%.

** The top gainer on the Hang Seng Index was Wharf Real Estate Investment, up 2.02%, while the biggest loser was Meituan. (Reporting by Donny Kwok; Editing by Vinay Dwivedi)