Not since Magellan sailed around the globe has the business of navigating our world been so profitable. From your iPhone to your BMW tracking your every move is a booming business. On Wednesday shares of Garmin (GRMN), the biggest maker of car-navigation devices, surged on a 72% jump in revenue.

Meanwhile, Trimble (TRMB), a maker of GPS devices for industry, and NAVTEQ (NVT), a producer of maps used by GPS devices, also jumped on earnings.