Key TakeawaysPinterest stock fell after Jefferies downgraded the company and lowered its price target.Analysts said Pinterest hasn't done enough to generate consistent advertising revenue.The company has rolled out AI tools for advertisers, but Jefferies said it's too early to expect the revenue growth Wall Street is projecting. Pinterest (PINS) shares slid Monday after analysts at Jefferies downgraded the social media company over advertising revenue concerns. The firm dropped its rating for Pinterest to “ ...