Mastercard's P/E ratio of about 40 is in line with its five-year average. That suggests a fair price. However, the P/B ratio of about 78 is notably above its five-year average.

A credit card enthusiast and avid traveler, Lori has visited more than 60 countries, many of them using credit card points and frequent flyer miles. She has lived in Spain as a freelance writer ...

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