Shares of GoPro Inc, a maker of cameras used by surfers, skydivers and other action junkies to record and post their exploits online, rose as much as 38 percent in their market debut.
“GoPro is a brand that defines a category, like Band-Aid or Uber, and is growing very fast. It helps that they are profitable,” said Rett Wallace, chief executive of Triton Research, which analyzes startups.