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← Signal: Tech & AI

Oura Files for IPO as Smart Ring Maker Pursues $16 Billion Valuation

Confirmed1 source · Sep 3, 2026

The Finnish health-tracking ring manufacturer filed with the SEC on Thursday, disclosing accelerating revenue growth and a lawsuit alleging misleading sleep-tracking accuracy claims.

Oura Files for IPO as Smart Ring Maker Pursues $16 Billion Valuation
Image via TechCrunch

What happened

Oura filed to go public through an SEC filing on Thursday, seeking a reported $16 billion valuation and aiming to raise $3 billion. The company reported nine-month revenue of $1.2 billion (ending June 30, 2025), up from $697 million in the prior year period. Oura has sold 3.6 million rings over the past year and maintains approximately 5 million paid subscribers with an 85% weighted-average 12-month retention rate. The rings, priced between $350–$400, measure biometrics including heart rate, metabolism, stress, and sleep patterns through an accompanying app marketed as an "always-on health intelligence platform." The company was valued at approximately $11 billion in October 2024 and filed confidentially for an IPO in May.

Context

Oura's filing highlights its expansion ambitions beyond fitness tracking into broader clinical and employer health integration, leveraging what it describes as one of the largest longitudinal biometric datasets in consumer health—representing 42 billion hours of physiological data and 50+ health metrics. The company frames this data trove as fueling AI and machine-learning models designed to improve accuracy and predictive capability as member histories deepen. The rapid revenue growth—from an estimated $500 million in 2024 to $1.2 billion in nine months of 2025—suggests significant momentum in the wearable health market. The public offering would mark an exit for investors in a company founded in Finland in 2013.

What's disputed

A proposed class action lawsuit filed against Oura alleges the company's rings cannot actually detect the physiological signals required to determine sleep stages, instead relying on AI estimates described in the complaint as no more reliable than random chance. The suit references years of user complaints that Oura consistently rated sleep as optimal when users reported it was not. Oura has disputed the allegations and stated it will defend against the claims in the appropriate legal forum.