In the following video, Motley Fool analyst Andrew Tonner tells investors why he's adding shares of Costco (NASDAQ:COST) to his Fool Real-Money Portfolio. The portfolio is based on defensive value investing, consisting of stocks that will continue to grow over the years in both strong and weak times in the market. Andrew tells us how Costco's business model has allowed it to continue to grow year after year even through the recession, how it also continues to grow its dividend, and why it's a much cheaper buy than you might think.

Andrew Tonner has no position in any stocks mentioned. The Motley Fool recommends Costco Wholesale. The Motley Fool owns shares of Costco Wholesale. 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.