BMO Capital Markets gave Halozyme (NASDAQ:HALO) an upgrade today, pushing the company's price target up from $4 to an incredible $12, which has shares up 15%. In the following video, Motley Fool health care analyst David Williamson takes us through BMO's thought process for an upgrade and Halozyme's upcoming catalysts.

David Williamson owns shares of Pfizer. Follow him on Twitter @MotleyDavid. Max Macaluso 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.