Can investors have any idea what's going on behind the curtain at the nations biggest banks? Are banks like Bank of America (NYSE:BAC) and Citigroup (NYSE:C) even worth investing in, or are they just too complex and opaque?

In the video below, Motley Fool analyst Matt Koppenheffer discusses the concerns around big banks and whether investors should be scared off by their business models.

Matt Koppenheffer owns shares of Bank of America. The Motley Fool owns shares of Bank of America and Citigroup. 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.