Bank of America (NYSE:BAC), Citigroup (NYSE:C), and AIG (NYSE:AIG) have all crushed the market over the past year or so, but all three still trade below book value. What causes a stock to trade below book value? In this segment from The Motley Fool's everything-financials show, Where the Money Is, banking analysts David Hanson and Matt Koppenheffer take a question from their mailbag about this issue and tell viewers which of these three stocks they like the best.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.