Economist Chris Low discusses the impact of JPMorgan's $2 billion loss and whether we should be concerned that it could happen at other banks.

Prop trading, as it’s called on Wall Street, is the target of the Volcker Rule, a centerpiece of the Dodd-Frank financial reform act. Marketplace’s Paddy Hirsch explains what proprietary trading is, and why it’s potentially dangerous for our savings and the financial system.

There's renewed debate today about the so-called "Volcker Rule." It's part of the Dodd-Frank Wall Street reform passed two years ago. Basically, the Volcker Rule says banks should take fewer risks in the market.