Aetna (NYSE: AET) reported fourth quarter and full-year 2013 earnings last week. The stock dipped slightly following the earnings report despite significant earnings and revenue growth. Given the uncertainty surrounding the financial impact of the Affordable Care Act's exchanges, this is an earnings report to watch closely.

In the video below, Motley Fool health care analysts Michael Douglass and Max Macaluso discuss the earnings report, the underlying business, the effect of the Obamacare exchanges, and the biggest area of potential concern for investors moving forward.