Tencent-backed live-streaming firm DouYu files for $500 mln U.S. IPO By: Reuters: Company News April 23, 2019 at 00:55 AM EDT * DouYu IPO may be among largest by Chinese firms in US this year Read More >> Related Stocks: Alibaba Group Holding Ltd Baidu.com SP ADR Huya Inc ADR Ruhnn Holding Ltd ADR Starbucks Corp