Tyson Foods and NxStage Medical climb; Geo Group skids
NEW YORK — Stocks that moved substantially or traded heavily Monday: Tyson Foods Inc., up $3.60 to $66.90 The Spam maker raised the low end of its annual profit estimates. Rockwell Collins Inc., up $8.07 to $127.07 Reuters reported that United Technologies made an offer to buy the aviation electronics maker. Anadarko Petroleum Corp., down