First Solar (NASDAQ: FSLR) reported a great third quarter, but there are some warts on the company's results. Low-efficiency panels aren't selling out like SunPower's (NASDAQ: SPWR) high-efficiency panels, full-year guidance was down, and backlog isn't coming with the same revenue as it once was. 

Does this mean it's time to take profit in First Solar stock? Erin Miller sat down with solar analyst Travis Hoium to see how these factors should impact what investors think about the stock. 

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Fool contributor Travis Hoium manages an account that owns shares of SunPower and personally owns shares and has the following options: long January 2015 $5 calls on SunPower, long January 2015 $7 calls on SunPower, long January 2015 $15 calls on SunPower, long January 2015 $25 calls on SunPower, and long January 2015 $40 calls on SunPower. The Motley Fool has no position in any of the stocks mentioned. 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.