US Top Rating Updates on 2/21: DOCU, NSC, CEG, MOS and More

Wolfe Research analyst Scott Group upgraded $Norfolk Southern (NSC.US)$ to Outperform from Peer Perform with a $255 price target. The shares have underperformed since the Ohio derailment about two weeks ago, but the company's near-term trends look more favorable with volumes up 3% quarter-to-date, above expectations and best among the U.S. rails, the analyst tells investors in a research note.

UBS analyst Karl Keirstead downgrades $DocuSign (DOCU.US)$ from Neutral to Sell and announces $52 price target.

BofA Securities analyst Paul Zimbardo downgrades $Constellation Energy (CEG.US)$ from Buy to Neutral and lowers the price target from $104 to $88.