He is the company's biggest shareholder, with a roughly 17% stake, according to the latest proxy filing. He is also the longest-serving CEO of an S&P 500 company. At the same time, Wexner is 82, prompting not-so-crazy speculation that his stepping aside as CEO combined with a sale of Victoria's Secret could be the next big move for L Brands, whose stock fell some 29% last year despite a broader equity market rally. Catch up on the Latest Videos on TheStreet !