In this edition of The Motley Fool's "Ask a Fool" series, Motley Fool analysts Jason Moser and Brendan Mathews take a question from a reader, who asks: "What are some good stocks for a young investor with a long time horizon? I currently own blue-chip stocks. Are there slightly riskier options that I could buy and hold for 40 years?"

Brendan likes CarMax (NYSE:KMX) because he sees a long runway for growth in the used-car market. He also thinks WisdomTree Investments (NASDAQ:WETF) is quite attractive at today's prices, given the company's huge market opportunity. Jason considers management important for a long-term holding, which is one of the reasons he likes Chipotle Mexican Grill (NYSE:CMG) as a long-term grower. He also believes that Invensense's (NYSE:INVN) technology could lead large profits over time. Brendan also likes Markel (NYSE:MKL), the specialty insurer, because of its outstanding leadership. 

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Brendan Mathews owns shares of CarMax, Markel, and WisdomTree Investments. Jason Moser owns shares of Chipotle Mexican Grill, InvenSense, and Markel. The Motley Fool recommends CarMax, Chipotle Mexican Grill, InvenSense, Markel, and WisdomTree Investments. The Motley Fool owns shares of CarMax, Chipotle Mexican Grill, InvenSense, and Markel. 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.