Square. Everywhere you want to be?Visa, the credit card processing giant famous for that marketing slogan, disclosed in a SEC filing late Thursday that it now owns a 9.99% stake in the class A shares of Square, the mobile payments startup co-founded by Twitter CEO Jack Dorsey.Shares of Square surged nearly 10% on the news at one point Friday before pulling back.Visa already had an investment in Square. It bought ...
