The shares of retail giant Target Corp (NYSE:TGT) are up 2.2% at $161.77 at last glance, following an upgrade from Citigroup to "buy" from "neutral." The firm named TGT as one of the winners in the retail sector after a choppy few years, citing well-controlled inventory, easier sales comparisons, and conservative guidance as well as its new membership program. Target stock has been on a downtrend since its April 1, 52-week high of$181.86, though things are picking up today. A broader look shows that the $1 ...