Abstract: HSCEI June 2026 added Hansoh Pharma and Akeso and deleted Sunny Optical and Haier Smart Home. All event windows through the fourth post-implementation week are complete. ADDs were mixed in the first implementation week, then both rallied in weeks two to four. DELETEs broke the historical positive-bridge rebound pattern. Sunny Optical drove the miss with a -12.8% first-week return.
LI NING, Sunny Optical, HANSOH PHARMACEUTICAL, CHINA GAS, HAIER SMARTHOME, BILIBILI, 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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