Shares of Tesla (NASDAQ:TSLA) are on a titillating tear, tripling over the past few months. With many people asking whether it's too late to buy the electric-car maker, Motley Fool co-founder David Gardner has an interesting answer. For that portion of your portfolio dedicated to high-risk, high-reward stocks, consider three other companies to buy instead of -- or along with -- Tesla.

Rex Moore owns shares of Tesla Motors. The Motley Fool recommends Middleby, Tesla Motors, The ExOne Company, and Tile Shop Holdings. The Motley Fool owns shares of Middleby, Tesla Motors, and Tile Shop Holdings. 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.