Jumia Technologies announced that it will release its results for the quarter ended March 31, 2019 before the U.S. market opens on Monday, May 13. This announcement supersedes a press release issued on May 7, the company said. Management will host a conference call at 8:30 a.m. ET on May 13. The Fly notes that Jumia has been the subject of two critical reports over the last two days from short-seller Citron Research, which has accused the company of fraud and said its stock is “worthless.”