Which 2015 Chinese stock-market sell-off became known as Black Monday in China?

The 2015 Chinese stock-market sell-off became known as Black Monday 2015.

On August 24, 2015, China’s Shanghai Composite Index fell 8.49%, its largest single-day percentage decline since 2007. The fall was part of broader turbulence that spread across global markets. Investors were concerned about slowing Chinese economic growth, falling commodity prices, and uncertainty over China’s currency and policy direction.

Chinese shares had risen dramatically earlier in 2015, encouraged by strong retail participation and leverage. When prices began to fall, forced selling and weakening confidence intensified the decline. Chinese authorities responded with measures including interest-rate cuts, liquidity support, and restrictions affecting market participants.

The episode is distinct from China’s 2015 stock-market bubble as a whole: Black Monday names the particularly severe trading day on August 24. It is also separate from the global Black Monday of October 1987.