In the following video, Motley Fool consumer-goods analyst Blake Bos extends a warning to SodaStream (NASDAQ:SODA) investors. If you recently bought the stock and are riding high off the fact that it has shot up 42% in the past three months, he wants you to know that whether you know it or not, you're experiencing strong internal biases about the stock. He tells us that believing you've picked a winner just because it has performed very well in such a short time frame can be risky and can blind you to the real fundamentals. Blake goes over those fundamentals for us and tells us what the real predictors of SodaStream's success will be, past gains aside.