Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
Magnum Hunter Resources Corp., up 80 cents at $5.47
The oil and gas company increased its 2011 and 2012 production estimates on higher than expected production levels from new wells.
Mead Johnson Nutrition Co., up $3.79 at $69.08
The company said that tests done on its baby formula found no trace of the bacteria suspected in a Missouri infant's death.
Cogdell Spencer Inc., up 34 cents at $4.26
Real estate investment trust Ventas Inc. is acquiring Cogdell Spencer, which invests in medical office buildings, for about $770 million.
Endeavour International Corp., up $1.54 at $7.94
The oil and gas company said it will buy ConocoPhillips' interest in three producing oil fields in the North Sea for $330 million.
Sears Holdings Corp., down $12.47 at $33.38
The department store operator said it will close between 100 and 120 Sears and Kmart stores after poor sales during the holidays.
Perfumania Holdings, Inc., down $6.47 at $13.23
The perfume retailer will acquire Parlux Fragrances, the maker of the Paris Hilton and Rihanna fragrance brands, for $170 million.
Cal-Maine Foods Inc., up $1.52 at $35.77
The egg producer said it sold more eggs at higher prices in its fiscal second quarter, boosting profit despite higher feed costs.
Westmoreland Coal Co., up 56 cents at $12.93
The energy company plans to acquire Chevron Mining's Kemmerer mine in Wyoming for $74 million plus the assumption of some debt.