Carol Meyrowitz

The parent company behind off-price chains like T.J. Maxx and Marshalls is conquering not only its market niche but also the broader world of retail. At the helm since 2007, Meyrowitz has led one of the few successful international expansions of a U.S. retailer. She’s continuing the push with an announcement in July that the company would enter Australia. In fiscal 2015, TJX, with $29.1 billion in revenue, surpassed Macy’s in size. ­Meyrowitz added the chairman title in June.