Stocks to watch Tuesday: Pfizer, CBS, Comcast By: MarketWatch May 02, 2011 at 18:05 PM EDT Companies whose shares are expected to see active trade in Tuesday’s session are Pfizer Inc., CBS Corp., Comcast Corp., and Mastercard Inc. Read More >> Related Stocks: Anadarko Petroleum Archer-Daniels-Midland Avon Products CBS Corp Chesapeake Energy Clorox Co Comcast Corp FirstEnergy Corp Hartford Finl Services Gp Las Vegas Sands Legg Mason MasterCard McKesson Corp Pfizer The Hanover Insurance Group Unum Group