Pinterest Inc (NYSE:PINS) stock is down 3.6% to trade at 29.55atlastcheck,afteradowngradefromJefferiesto"hold"from"buy,"aswellasaprice−targetcutto32 from 40.Thefirmnotedthesocialmediaplatform′s newproductsareunlikelytodrivepreviouslyimpliedexpectedrevenuegrowth,andthatthepaceofmarginexpansionmayslowaftercostoptimizationefforts.WellsFargoalsolowereditspriceobjectiveto39 from $40.PINS is now on track for a fourth-straight loss and biggest single-d ...