Shares of the database specialist crashed earlier this year but are making a comeback. Shares of database company MongoDB (MDB -0.29%) were once a highflier, exceeding 500earlierthisyear.Butthatchangedafterthecompanyannouncedresultsforitsfiscalfirstquarter,endedApril30.Managementnotedaslowdowninrevenuegrowthandreduceditsguidanceforthecurrentfiscalyear.MongoDBstockpromptlyplunged,eventuallyreachinga52−weeklowof212.74 in August. But on Aug. 29, the company repor ...