In the following video, Motley Fool financial analysts David Hanson and Matt Koppenheffer talk about which customers are the most important for big banks. David tells us why both individual retail banking consumers and giant corporate clients have shown reduced profitability in today's climate, and why the mid-sized commercial business clients are where banks can really see strong margins. David also tells investors how important it is to follow follow along with the bank you invest in, to be sure it is increasing its base of clients in this range. 


David Hanson has no position in any stocks mentioned. Matt Koppenheffer owns shares of Bank of America. The Motley Fool recommends Wells Fargo. The Motley Fool owns shares of Bank of America, JPMorgan Chase, and Wells Fargo. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.