Pepsi-Cola passes Diet Coke to be the No. 2 soda in the U.S. By: MarketWatch March 26, 2015 at 13:55 PM EDT Pepsi-Cola passes Diet Coke to be the new No. 2 soda in the U.S., but remains well behind No. 1 Coke, Beverage Digest says. Read More >> Related Stocks: Coca-Cola Company Dr. Pepper Snapple Group Nestle Sa ADR PepsiCo