January 2008 was an especially volatile month in world stock markets, with a surge in implied volatility measurements of the US-based S&P 500 index, and a sharp decrease in non-U.S. stock market prices on Monday, January 21, 2008 (continuing to a lesser extent in some markets on January 22). Some headline writers and a general news columnist called January 21 “Black Monday” and referred to a “global shares crash,” though the effects were quite different in different markets.
The effects of these events were also felt on the Shanghai Composite Index in China which lost 5.14 percent, most of this on financial stocks such as Ping An Insurance and China Life which lost 10 and 8.76 percent respectively. Investors worried about the effect of a recession in the US economy would have on the Chinese economy. Citigroup estimates due to the number of exports from China to America a one percent drop in US economic growth would lead to a 1.3 percent drop in China’s growth rate.