Which Chinese stock exchange index fell about 8.5% on August 24, 2015, in the “Black Monday” sell-off?

The Shanghai Composite fell about 8.5% on August 24, 2015, during China’s 2015 “Black Monday” sell-off.

The Shanghai Composite Index dropped 8.49% that day, its largest single-day percentage decline since February 2007. The fall occurred amid concerns about slowing Chinese economic growth, weakening corporate prospects, and the unwinding of a speculative stock-market surge.

The sell-off affected markets worldwide. European and U.S. indexes also fell sharply as investors worried that China’s slowdown could weaken global demand and commodity prices. The episode was part of a broader period of Chinese market turbulence in 2015 and 2016.

The Shanghai Composite should not be confused with the Shenzhen Component, which follows a different exchange and index methodology. The date and 8.49% decline specifically identify the Shanghai Composite’s August 24 performance.