Index Rebalance

STAR50 Sep 2026 Index Rebalance: Post-Announcement Positioning

29 Aug 2026 By Ke Yan, CFA
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Abstract: CSI announced five ADDs and five DELETEs for the STAR50 Sep 2026 review, matching all five of our DELETE calls and two of our five ADD calls. Raytron Technology, Sichuan Huafeng Technology, Beijing E-Town Semiconductor, Arashi Vision, and SJ Semiconductor enter on 14 Sep 2026, replacing Cathay Biotech, AVIC Chengdu UAS, EverDisplay Optronics, Bestechnic, and APT Medical. All five ADDs fell in the ten days before the announcement. Historically, ADDs with that pattern opened higher at the post-announcement open and then lost ground into implementation.

RAYTRON TECHNOLOGY (688002 CH) CATHAY BIOTECH (688065 CH) DOSILICON (688110 CH) BEIJING YANDONG MICROELECTRONIC (688172 CH) AVIC (CHENGDU) UAS (688297 CH) EVERDISPLAY OPTRONICS (SHANGHAI) (688538 CH) Bestechnic (688608 CH) APT MEDICAL (688617 CH) SICHUAN HUAFENG TECHNOLOGY (688629 CH) CIRCUIT FABOLOGY MICROELECTRONICS EQUIPMENT (688630 CH) BEIJING E-TOWN SEMICONDUCT (688729 CH) ARASHI VISION (688775 CH) SJ SEMICONDUCTOR COR (688820 CH)

Highlighted Stocks

RAYTRON TECHNOLOGY, CATHAY BIOTECH, DOSILICON, BEIJING YANDONG MICROELECTRONIC, AVIC (CHENGDU) UAS, EVERDISPLAY OPTRONICS (SHANGHAI), Bestechnic, APT MEDICAL, SICHUAN HUAFENG TECHNOLOGY, CIRCUIT FABOLOGY MICROELECTRONICS EQUIPMENT, BEIJING E-TOWN SEMICONDUCT, ARASHI VISION, SJ SEMICONDUCTOR COR

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