A man wearing a protective mask is seen inside the Shanghai Stock Exchange building, as the country is hit by a new coronavirus outbreak, at the Pudong financial district in Shanghai, China February 28, 2020. Separately, the Shanghai and Shenzhen stock exchanges, under the CSRC's guidance, have sought information from major quant funds on their money-making strategies, another source said. The weakness has triggered finger-pointing in social media, as well as criticism from fund managers and retail investors against these quant funds and short sellers. Short-selling activities by quant funds could also be caught in the crossfire, he said. Another brokerage source said the CSRC asked them to elaborate on the size of their quant clientele and whether quant trading had impacted recent stock market.

---

Persons: Aly, shortsellers, Yuan Yuwei, Yang Tingwu, Shri Navaratnam Organizations: Shanghai Stock Exchange, REUTERS, Rights, China Securities Regulatory Commission, Global, Sigma, Huatai Securities, China's, Quant Investment, Yanfu Investments, Shanghai Minghong Investment Management Co, Wisdom Asset, Tongheng Investment, Shanghai, Thomson Locations: Pudong, Shanghai, China, Shenzhen, Winton, Beijing