Which date marked the start of the 2015 Chinese stock-market crash?

The 2015 Chinese stock-market crash began on June 12, 2015.

China’s mainland share market had risen sharply during the preceding year, helped by easy credit, strong retail participation, and expectations that economic reforms would support higher valuations. The Shanghai Composite reached a 2015 high on June 12, after which prices began a steep decline.

Authorities responded with measures including trading halts, restrictions on some share sales, support for selected purchases, and investigations of alleged market manipulation. The turbulence intensified in July and August, when further falls affected confidence in Chinese markets and contributed to global volatility.

The June starting date is distinct from August 24, 2015, sometimes called “Black Monday,” when worldwide markets suffered a particularly dramatic session. That later date was part of the same broader turbulence, not its beginning. The episode also differed from China’s 2007–08 stock-market decline.