Warren Buffett has been investing for banks for ... well ... as long as he has been investing. Berkshire Hathaway (BRK.B 1.30%) has large stakes in Wells Fargo (WFC 2.74%), Bank of America (BAC 3.35%), and now, Goldman Sachs (GS 0.22%).

People love Buffett because he has a knack for explaining complicated things in simple, clear ways. So when he discussed how he thinks about valuing banks, we listened.

In this video, Fool analysts Morgan Housel and Matt Koppenheffer break down Buffett's thinking.