While artificial intelligence (AI) continue to fuel the market, a specialty retailer has been the superior investment over the last several years.Over the last few years, no theme has captured Wall Street's imagination quite like artificial intelligence (AI). Since AI burst into the mainstream in late 2022, investors have watched several companies climb into the trillion-dollar club. Chief among them is semiconductor giant Nvidia -- whose market value has surged more than twelvefold, making it the most valu ...