Hangzhou, China, 2017-Jun-01 — /EPR Retail News/ — Alibaba Group Holding Limited (NYSE: BABA) today (May 31, 2017) announced that it will host an Investor Day on June 8-9, 2017 China Time at Alibaba Xixi Headquarters, Hangzhou, China. Speakers will include Jack Ma (Executive Chairman), Joe Tsai (Executive Vice Chairman), Daniel Zhang (CEO), Maggie Wu…