In the following video, Motley Fool research analyst John Reeves talks about three companies that made major gains this week. He tells us how Google (GOOGL -0.02%) shares rose 7% after a strong earnings report, explains why Intuitive Surgical (ISRG -0.09%), maker of the da Vinci robotic system, was up 14% for the week, and takes a look at Netflix (NFLX -1.19%), which jumped 66% after Wednesday's quarterly earnings report took Wall Street by surprise.