The Shanghai Stock Exchange website recently published the “Notice on Revising the Preparation Plan for the Shanghai Composite Index Series”. According to the announcement, the Shanghai Stock Exchange and China Securities Index Co., Ltd. decided to revise part of the Shanghai Stock Exchange and China Securities Index Co., Ltd.'s comprehensive index preparation plan. The revisions include: adding the maximum weight rule for individual samples not exceeding 15%; and adjusting the exclusion time for risk warning securities from “the next trading day of the second Friday of the month following the risk warning implementation date” to “the next trading day of the second Friday of the month following the risk warning announcement date”. The rest of the indexing programme remains unchanged. The proposed revised indices include the Shanghai Composite Index, the Shanghai Stock Exchange Index, the Shanghai Stock Exchange Index, and the Science and Innovation Composite Index. The revisions to the preparation plan for the above indices and derivative indices will be implemented on October 26, 2026.

Zhitongcaijing · 1d ago
The Shanghai Stock Exchange website recently published the “Notice on Revising the Preparation Plan for the Shanghai Composite Index Series”. According to the announcement, the Shanghai Stock Exchange and China Securities Index Co., Ltd. decided to revise part of the Shanghai Stock Exchange and China Securities Index Co., Ltd.'s comprehensive index preparation plan. The revisions include: adding the maximum weight rule for individual samples not exceeding 15%; and adjusting the exclusion time for risk warning securities from “the next trading day of the second Friday of the month following the risk warning implementation date” to “the next trading day of the second Friday of the month following the risk warning announcement date”. The rest of the indexing programme remains unchanged. The proposed revised indices include the Shanghai Composite Index, the Shanghai Stock Exchange Index, the Shanghai Stock Exchange Index, and the Science and Innovation Composite Index. The revisions to the preparation plan for the above indices and derivative indices will be implemented on October 26, 2026.