Signet Jewelers (NYSE: SIG), the world's largest retailer of diamond jewelry, has been a volatile stock over its history, but the company began a new chapter a little more than a year ago when J.K. Symacyk joined the company as CEO. Shortly after he took over, the company launched its Grow Brand Love strategy, which is focused on investing and growing its core banners, a full-price marketing strategy, and simplifying the brand portfolio. Will AI create the world's first trillionaire? Our team just release ...