GoPro tumbles as production issues hurt results, forecast

GoPro, whose shares tumbled 20 percent after the bell on Thursday, has now reported falling sales for four quarters, in part due to dwindling demand for its body-mounted point-of-view cameras favored by surfers, skydivers and other action junkies. After a delay, GoPro launched a new camera model, the Hero5, as well as its first consumer drone, the Karma, in mid-September – products that analysts view as instrumental in turning around the company's fortunes. GoPro said it was now at full pr