And the company, which is among the most innovative in the world, just released its newest drone, the Phantom 4, last week. DJI successfully raised more than $575 million in VC funding last year, more than enough for operations, so an IPO in the near future is unlikely. However, there's one publicly traded company that makes a critical component to DJI's products, as well as the drones made by the other top manufacturers. Ambarella (AMBA) manufactures high-definition video chipsets.