This week, I'm going on a buying spree for the Real Money Stock Portfolio that I manage for the Fool, and today's selection is one of my favorites: International Business Machines (NYSE:IBM). In fact, I've often mentioned the company as one of my favorite tech blue chips for its uncanny ability to deliver consistent, conservative results, which are exactly the kind of companies I want to own in my defensive value investing portfolio.

The company has a sticky business model that it's always tweaking and improving. Even more importantly, it's one of the best in the business at returning capital to shareholders; consistently growing it's payouts, and buying back stock responsibly. And while top line growth may be hard to come by, its experienced, deep bench of managers is still laser focused on growing profits for investors for years to come. In this video, I lay out my logic for buying Big Blue today.

Fool contributor Andrew Tonner has no position in any stocks mentioned. Follow Andrew and all his writing on Twitter at @AndrewTonnerThe Motley Fool owns shares of International Business Machines. 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.