When a stock is up more than 160% in a year, it can be easy to think you missed the boat. However, that's not always the case, and when a high-flying stock like pharma darling Regeneron (NASDAQ:REGN) pulls back, it can serve as a buying opportunity. In the following video, Brenton Flynn explains why investors shouldn't be shocked by the news that has this stock down about 5% today.

Brenton Flynn has no position in any stocks mentioned. 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.