A 2%+ rally at the close, passive funds rushing in before the rebalancing list takes effect, with Oufeiguang being sold off first before being removed—typical index reconstruction arbitrage trading.

In the late trade on May 29, multiple stocks quickly surged by more than 2%, while OFilm, Stone Technology, and Bulls Group fell by more than 2%. On May 13, MSCI announced the May review results, which will take effect after the close on the 29th. Among them, 19 A-shares were added and 16 were removed, including additions such as Guangku Technology, Changfei Optical Fiber, Changxin Bochuang, and Baili Tianheng, and removals such as Stone Technology, Shouchuang Securities, and China Communications Signal.