The Methodologies of SSE Composite Index Series Will Be Amended
Upon due consideration, SSEand CSI have decided to amend the index methodologies of SSE Composite Index Series.The details are as follows:(1) A weight cap rule will be addedso that the weight of each constituent is capped at 15%;(2) The time of removalfor risk-warned securities will be adjusted from "the next trading day after the second Friday of the month following the month in which the risk warning was implemented" to "the next trading day after the second Friday of the month following the month in which the risk warning was announced". The other parts of index methodologies remain unchanged.
The amendments will be implemented on October26, 2026. Regarding the amended methodologies, please refer to the official website of SSE(www.sse.com.cn) and CSI (www.csindex.com.cn).
Shanghai Stock Exchange
China Securities Index Co., Ltd.
September 24, 2026