New York Post: An activist investor in Martha Stewart’s company has surfaced, banging the table for a higher buyout price. Plymouth Lane Capital Management disclosed an 11 percent stake in Martha Stewart Living Omnimedia on Friday, and prodded the company in a securities filing to mount a “robust marketing process” to find a superior bid to its $353 million acquisition by Sequential Brands. Nevertheless, insiders said it’s unclear whether the domestic diva’s licensing empire can attract a substantially higher bid, given Sequential’s strategic advantages in licensing.