United States Steel Corp (NYSE:X) stock is up 4.1% at 32.55atlastcheck,afteranupgradefromJPMorganSecuritiesto"overweight"from"neutral,"andatGLJto"buy"from"sell."Thelatterfirmappliedasum−of−partsapproachthatvaluesthecompanywithorwithoutthehighlypublicizedpotentialtakeoverbyNipponSteel,whichU.S.VicePresidentKamalaHarrisopposedatarallylastweek. Xisontrackforitsthird−straightdailygainafteritsrecentSept.4,52−weeklowof26.91. Year to date, th ...