Abstract: Hang Seng announced Hansoh Pharma and Akeso as ADDs, and Sunny Optical and Haier Smart Home as DELETEs, effective 8 Jun 2026. Our 23 Apr forecast called both DELETEs and Hansoh Pharma, but WuXi Biologics was not announced and Akeso was not in the formal slate. Both ADD names fell through pre-announcement window and enter bridge window with negative pre-announcement returns, below the historical ADD pre-announcement return.
SUNNY OPTICAL TECHNOLOGY (GROUP), HANSOH PHARMACEUTICAL, HAIER SMART HOME, AKESO
Research on index reviews and inclusion events across Asia Pacific, including MSCI, Hang Seng (HSI, HSCEI, HSCI), HS TECH, CSI 300, STAR50, NIFTY and Stock Connect changes. Coverage runs from rebalance forecasts through post-announcement positioning, pre-implementation updates and post-implementation reviews, using the price patterns of past events.
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