** Shares of Duality Biotherapeutics Inc 9606.HK jump 14.3% to HK$415, their highest point and the biggest intraday pct gain since debut on April 15

** The biopharmaceuticals group says it will be included as a constituent stock of the Hang Seng Composite Index and in the list of eligible shares of the Southbound Trading Link of the Shanghai-Hong Kong Stock Connect effective September 8

** Hang Seng Biotech Index .HSHKBIO rises 1.6%, benchmark Hang Seng Index .HSI adds 0.3%

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))