An investor gestures as he checks share prices at a securities firm in Shanghai on August 26, 2015. Shanghai stocks closed down 1.27 percent in volatile trading on August 26, extending days of falls despite a central bank interest rate cut aimed at boosting the flagging economy and slumping shares, dealers said. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
An investor looks at screens showing stock market movements at a securities company in Beijing on July 28, 2015. Chinese shares sank on July 28, a day after Shanghai's steepest one-day slide in eight years, defying renewed government vows of support that analysts warned were not enough to soothe nervous investors. AFP PHOTO / FRED DUFOUR (Photo credit should read FRED DUFOUR/AFP/Getty Images)
