Oura files for IPO as smart ring maker eyes $16 billion valuation

The Finnish company that turned a metal ring into one of the most talked-about health gadgets of the decade has filed to go public, with Oura confirming its SEC filing on September 3 and setting its sights on a valuation of roughly $16 billion.

What Oura actually filed

Oura confidentially filed for an initial public offering back in May, and Wednesday's filing made that process official. The company is reportedly hoping to raise around $3 billion in the offering, a figure that would make it one of the more significant consumer hardware listings in recent memory. The anticipated $16 billion valuation marks a sharp jump from the roughly $11 billion the company was valued at as recently as October 2025.

The growth behind the number

The filing gives a clear picture of why investors are willing to pay up. Oura's revenue climbed from $697 million in the nine months ending June 30, 2025, to $1.2 billion over the same period this year, a jump of nearly 75 percent in just twelve months. The company sold 3.6 million rings over the past year alone and now counts close to 5 million paying subscription members, with an 85 percent weighted-average 12-month retention rate on those memberships, a figure that suggests people who buy the $350 to $400 ring are, for the most part, sticking with the subscription that unlocks its full feature set.

What the ring is actually selling

Oura markets itself less as a fitness gadget and more as an "always-on health intelligence platform," tracking more than 50 health metrics through a device worn on a single finger rather than a wrist or chest strap. The company says it now holds close to 42 billion hours of physiological data collected from its user base, a dataset it uses to train the AI models behind its sleep scores, readiness ratings and personalized health predictions. That scale of data is central to Oura's pitch to investors: the more people wear the ring, the better its predictions get, and the harder it becomes for competitors to catch up on accuracy alone.

Not without turbulence

The IPO filing arrives alongside a less flattering piece of news. Oura is facing a proposed class action lawsuit that accuses the company of misleading customers about the accuracy of its sleep tracking, arguing that the rings rely on AI-driven estimates rather than direct physiological detection of sleep stages. How that lawsuit plays out could matter a great deal to a company whose entire value proposition rests on the claim that its data and predictions are trustworthy enough to base health decisions on.

Where Oura came from

Founded in Finland in 2013, Oura spent its early years as a niche product for wellness enthusiasts and biohackers before breaking into the mainstream, helped along by adoption from athletes, celebrities and eventually corporate wellness programs. That slow build makes the jump to a $16 billion public listing feel less like an overnight sensation and more like the payoff of over a decade spent narrowing in on a single, well-defined product category.

What happens next

With the SEC filing now public, the next milestones will be the roadshow and pricing, where investors get their first real chance to test whether Oura's growth story and data moat justify the valuation it's asking for. A successful listing would cement wearable health data as a category public markets are willing to bet big on, while a rocky one, especially with the sleep-tracking lawsuit still unresolved, could make future health-wearable IPOs a harder sell.

Either way, Oura's move to the public markets puts a number on something that's been building quietly for years: a small ring, worn by millions, has become a serious contender in an industry that until recently was dominated by wrist-worn giants.