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 0.54%) shares rose 7% after a strong earnings report, explains why Intuitive Surgical (ISRG 0.74%), maker of the da Vinci robotic system, was up 14% for the week, and takes a look at Netflix (NFLX 0.92%), which jumped 66% after Wednesday's quarterly earnings report took Wall Street by surprise.