United States Steel Corp (NYSE:X) stock is up 4.1% at $32.55 at last check, after an upgrade from JPMorgan Securities to "overweight" from "neutral," and at GLJ to "buy" from "sell." The latter firm applied a sum-of-parts approach that values the company with or without the highly publicized potential takeover by Nippon Steel, which U.S. Vice President Kamala Harris opposed at a rally last week. X is on track for its third-straight daily gain after its recent Sept. 4, 52-week low of $26.91. Year to date, th ...