In this video, Matt Koppenheffer describes the one key opportunity for investors to pile into Goldman Sachs. In a nutshell, Goldman is an investment bank with a competitive edge over its competitors that is also selling at a discount. There are other big banks around, but big customers vote with their feet, and they are going to Goldman. Traditionally, Goldman sells for two or three times tangible book value, and right now, it's selling a bit above tangible book value. So investors have an opportunity to buy a leader in the investment banking business well below its traditional valuation.