Despite a flat day so far on Wall Street, some stocks are bucking the trend and climbing higher.

After TD AMERITRADE (NASDAQ:AMTD) released positive monthly metrics, the online-focused brokerage stocks ticked higher. In this video, Motley Fool financial analyst David Hanson discusses three companies and tells investors about a part of the business model that some may be overlooking.

David Hanson has no position in any stocks mentioned. You can follow David on Twitter. The Motley Fool recommends TD AMERITRADE. 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.