https://www.bloomberg.com/news/arti...an-speed-trader-101-million-issues-jail-terms "Yishidun, also known as Eastern Dragon, said that it was one of a number of foreign-owned firms that China probed after the $5 trillion market crash in 2015. An independent audit of the company’s trading model did not find “anything consistent with ‘market manipulation,’ as this term is understood outside China,” the firm said Friday."
From same link above ------Yishidun, controlled by two Russians, illegally plugged its proprietary trading system into the China Financial Futures Exchange in early 2015, the court found. -------