•At the lunch break, the Hang Seng Index (HSI) futures have fallen 2.6% to trade at the 20,453. With the moves in the futures, position taking was largely seen in HSI calls, with investors net buying over 2700萬units of HSI-CYC and 2200萬units of 恒生指數-CXY as these warrants tumbled over 28% and 40% as of the lunch break. Nonetheless, bearish investors also net bought over 1900萬units of put HSI-PWBF.