Oura
Oura makes the Oura Ring, a smart ring and app subscription that tracks sleep, activity, stress and other health metrics for consumers, and also sells to enterprises and the military.
Oura sells the Oura Ring, a smart ring with a companion app that uses AI-driven insights on sleep, readiness, fitness and women's health. About 80% of revenue comes from hardware and about 20% from a monthly membership. Customers are mainly consumers, plus partners such as the NBA and the US military. Oura reported over $500M in revenue in 2024 and expected about $1B in 2025. It had sold over 5.5M rings by September 2025 and raised a $900M+ Series E at an $11B valuation in October 2025. It filed an S-1 in September 2026 for a Nasdaq listing under the ticker OURA. The company was founded in Oulu, Finland, and it now has its headquarters in San Francisco.
Smart ring and AI health advisor; IPO filed 2026. S-1 filed 2026 (revenue +74%); ~$2B revenue expected 2026; $11B Series E Oct 2025. Still private as of Oct 4 2026.
