Stocks to watch Tuesday: Carnival, Georgia Gulf By: MarketWatch January 17, 2012 at 06:48 AM EST The aftermath of the Costa Concordia disaster and M&A-related developments stand front and center early Tuesday. Read More >> Related Stocks: Amtd Idea Group CBS Corp CBS Corp Cl A Carnival Corp Check Point Software Citigroup Electricite DE Franc Exelon Corp M&T Bank Macy's Wal-Mart Stores, Inc. Wells Fargo Westlake Corp