American Eagle (AEO) stock rose as much as 21% on Monday after President Trump waded into the discussion about the company's viral ad campaign featuring Sydney Sweeney. "Sydney Sweeney, a registered Republican, has the 'HOTTEST' ad out there," Trump wrote in a post on Truth Social, the social media platform he owns. "It's for American Eagle, and the jeans are 'flying off the shelves.' Go get 'em Sydney!" The campaign features a play on homophones — "Sydney Sweeney has great jeans" and "Sydney Sweeney has great genes" — that quickly generated controversy around the potential ambiguity of the ad's message....