Performance

Viking Global knows what's in your wallet

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You know that classic television commercial with the marauding Vikings that ends with the tagline "What's in your wallet?" Well, here is the kicker: If you are carrying a MasterCard, you really are carrying a little bit of Viking around with you.

Andreas Halvorsen's Viking Global Investors is one of the largest shareholders in the credit card giant, which went public last year. MasterCard rocketed to $110 per share in late January, up from its $40 offering price. And Viking was there pretty much all along the way, capturing a $70 gain on each of the 4.5 million shares