Oura files for IPO as smart ring rivals from Circular, RingConn, Ultrahuman close in
Oura officially filed for an IPO on September 3, reporting revenue nearly doubling to $1.21 billion over nine months and 3.6 million rings sold to about 5 million paid members. The filing comes just after the launch of its slimmer Oura Ring 5, even as competitors like Circular, RingConn, and Ultrahuman roll out rings with tap-to-pay, haptics, and onboard software.