Which 2015 market event saw China’s Shanghai Composite fall by about 8.5% on August 24?

The 2015 market event in which China’s Shanghai Composite fell by about 8.5% on August 24 was Black Monday 2015.

China’s stock market had risen rapidly during the first half of 2015, supported by margin borrowing and strong retail participation. The Shanghai Composite then entered a sharp decline. On August 24, Chinese shares plunged, and selling spread to markets around the world.

The decline reflected concerns about China’s economic growth, falling commodity prices, currency policy, and the unwinding of leveraged positions. European and U.S. markets also experienced severe volatility, although the episode did not become a global depression comparable to 1929.

Black Monday 2015 is distinct from Black Monday on October 19, 1987, which refers to the record one-day percentage fall in the Dow Jones Industrial Average. The shared label describes a dramatic Monday sell-off, not one single historical event.