Which Chinese exchange’s 2015 collapse saw its benchmark index fall about 8.5% on 27 July?

The Shanghai Stock Exchange was the Chinese exchange whose benchmark index fell about 8.5% on 27 July 2015.

The Shanghai Composite Index had risen rapidly during the first half of 2015, supported by retail participation, margin borrowing, and expectations of continued economic growth. The market then turned lower, and official efforts to stabilize prices could not immediately restore confidence.

The 27 July decline was one of the sharpest single-day falls during the turbulence. Further volatility followed in August 2015, when a change in China’s currency-management approach added to global uncertainty about Chinese growth and demand.

The episode is sometimes described simply as the 2015 Chinese stock-market crash, but several connected sell-offs occurred over an extended period. The Shanghai Composite is an index of listed Shanghai shares, not the entire Chinese economy or every Chinese exchange.