Which Chinese stock-market index fell about 8.5% on August 24, 2015?

The Shanghai Composite fell about 8.5% on August 24, 2015, during China’s severe 2015–16 stock-market turbulence. The session became widely known as Black Monday in Chinese markets and helped trigger a global sell-off.

Chinese shares had surged during the first half of 2015, supported by margin borrowing and strong retail participation. When prices reversed, forced selling and concerns about China’s economic growth intensified the decline. The Shanghai Composite lost more than 8% on August 24, while markets in Europe and the United States also fell.

This event is distinct from the 1997 Asian financial crisis, which began with pressure on Thailand’s baht, and from the 2008 crisis, which centered on U.S. housing and credit. The Shanghai Composite measures shares listed on the Shanghai Stock Exchange; it is not the same as Hong Kong’s Hang Seng Index.