Oura confidentially filed its S-1 yesterday. 5.5 million rings sold. An $11 billion valuation off the Series E last September. A category they invented and still own. By every metric VCs care about, this is the victory lap.
I think it's the beginning of the end of the company that got them here.
Not because Oura is bad at what they do — they're great at it. Because they're great at it. The thing public markets are about to ask of them is incompatible with the thing that made them worth buying in the first place.
The growth math that breaks good companies
Public markets don't have a vocabulary for “this company is the right size.” They have one mode: bigger than last quarter, forever. That works for ad networks, cloud, or anything with effectively infinite demand expansion. It is brutal if you sell a $349 piece of hardware that goes on one finger and lasts several years.
Oura roughly doubled rings sold in the last twelve months — 2.5M to 5.5M. That's the kind of curve you can sell to public investors. The problem is what happens in year three, four, five, when the curve flattens because the people who want a sleep-tracking ring have bought one. The TAM is real but it isn't infinite, and the replacement cycle isn't an iPhone replacement cycle.
When the curve flattens, three things happen, in order:
First.The subscription gets squeezed harder. Price increases, features paywalled that weren't before, members nudged into longer commitments.
Second. The product expands into adjacencies it has no business expanding into. Watches. Patches. Scales. Something with a screen.
Third. The brand starts feeling like the brand of a company trying to grow instead of the brand of a company that knows what it is.
Every quarter, the earnings call has to explain why growth is still there. Every quarter, the answer pulls the company one step further from what made the original product great.
Fitbit is sitting right there. Literally, this month.
We have the case study, and it's not even a historical one. Fitbit IPO'd in June 2015 at a $4.1B valuation, peaked at a $9.7B market cap that same summer, then spent four years getting eaten — by Apple from the top, by cheap Chinese hardware from the bottom, and by its own attempts to chase smartwatch growth it was never going to win. Google bought what was left for $2.1B in 2021. The brand became a ghost.
Two weeks ago, Google launched the “Fitbit Air” — a $99.99 screenless health tracker explicitly designed to compete with Whoop and Oura, bundled with a $9.99/month Google Health Premium subscription. The Fitbit app is being retired entirely and rebranded as Google Health. The Fitbit brand is a ghost, but the Fitbit acquisition is now Google's wedge against Oura specifically.
The Fitbit failure wasn't “wearables don't work.” Wearables work fine — Apple sells tens of millions of Apple Watches. The failure was that a focused hardware company with a great single-purpose product got forced into a fight it couldn't win, by the gravitational pull of public-market expectations. By the time Google bought it, Fitbit was worth less than a fifth of its peak.
Oura is in the same trap with extra dimensions. Apple is bigger and better-resourced than it was in 2015. Samsung is shipping a Galaxy Ring. Whoop just launched a women's health blood test. Google's $100 Fitbit Air just hit the market. The competitive floor is rising at the exact moment Oura is about to take on quarterly disclosure obligations that tell every one of those competitors exactly where the soft spots are.
What “going public” actually buys you, and who it's for
The pitch for an IPO is liquidity, prestige, and capital. Be honest about each.
Liquidity is for early investors and employees with vested equity. It is not for the customer, the product, or the long-term health of the company. It is an exit event for the people who funded you, dressed up in the language of a milestone.
Prestige is real but cheap. Being a public company used to mean something. In 2026, with SpaceX dominating the IPO news cycle the same week on its own S-1 and a market full of AI infrastructure companies with no path to profitability, “we went public” is not the signal it was twenty years ago.
Capital is the only honest one. Public markets give you a deeper pool to raise from. But Oura just raised $875M from private investors eight months ago. They don't need more money. They need an exit for the people who gave them money.
That's a fine reason to IPO. It's just not the same reason as “we are building a hundred-year company.”
The companies that didn't, and what they got for it
Mailchimp turned down acquisition offers for twenty years as a bootstrapped company before selling to Intuit in 2021 for $12 billion in cash and stock— on their own terms, at their own valuation, with no quarterly earnings call pressure shaping the decade leading up to it. Basecamp/37signals has been making the same argument out loud for twenty years. Valve has built one of the most profitable software companies on earth without ever filing a single quarterly earnings report.
Patagonia did something more extreme. In 2022, Yvon Chouinard transferred ownership of the entire $3B company into a purpose trust and a nonprofit, with annual profits redirected to fighting climate change. His public statement on why he didn't take the company public is worth reading in full:
“Taking the company public would have been a disaster. Even public companies with good intentions are under too much pressure to create short-term gain at the expense of long-term vitality and responsibility.”
The pattern: companies that resisted the IPO gravity well got to keep being the thing their customers fell in love with. The ones that didn't — Fitbit, GoPro, Peloton, Beyond Meat — became cautionary tales for the next cohort.
I'd add: the public companies that did go public and held it together — Apple, Costco, Netflix — almost all had two things in common. A founder who never lost control of the board, and a product category big enough to absorb a decade of growth pressure without forcing the company to become something it wasn't. Oura has neither.
What I'd want to see, if I were them
If I were Oura's leadership, I'd treat this filing as the moment to set a different kind of expectation, loudly, before the roadshow starts:
- A multi-year roadmap that explicitly does not include a watch, a scale, or a patch.
- A subscription pricing commitment with a public ceiling.
- A founder-controlled dual-class share structure. Snap did it. Meta did it. It is allowed.
- A clear statement of what “winning” looks like at $5B revenue that does not require entering three new categories.
Will any of this happen? Probably not. The bankers won't let it. The institutional investors won't price it. The pre-IPO investors who funded the Series E at $11B need a story bigger than “we stay in our lane and compound.”
So the more likely outcome is the Fitbit one, on a slightly longer timeline. Two strong years post-IPO. A growth scare in year three. An adjacency play in year four that doesn't work. An acquisition rumor in year five. The ring stays on the shelves. The company that made it stops existing in any meaningful sense.
What could prove me wrong
Worth saying plainly: this is a prediction, and there's a real version of the next five years where I'm flat wrong. Three things could break this thesis.
One: women's health becomes the moat. Oura already launched a proprietary AI model for women's health earlier this year, and they're winning young women specifically while losing the gym-bro segment. If that becomes a defensible category — cycle tracking, fertility, perimenopause, pregnancy — Apple and Google can't easily catch up because they don't have the form factor or the years of data. That's a genuine moat, and a much bigger TAM than “sleep tracker.”
Two: the medical device pivot works.If Oura gets FDA-cleared diagnostics into the ring — atrial fibrillation, sleep apnea, glucose, anything insurance will reimburse — the unit economics flip from consumer hardware to medical device. That's a different multiple, a different growth story, and a story public markets will actually pay for.
Three: founder control gets baked in. If the S-1, when it goes effective, includes a dual-class share structure that gives founders/leadership real control, most of what I wrote above gets weaker. Public-market pressure only works if the public market actually controls the votes.
I'd put my own odds at maybe 30% on at least one of those playing out. That's enough to be cautious on Oura — not bearish, but worth watching closely.
The Oura ring is one of the few pieces of hardware I've owned that does exactly what it says it does, and nothing more. That is rare and it is valuable, and public markets are about to teach Oura that “exactly enough” is not an answer they accept.
The most interesting companies of the next decade might be the ones that figure out how to stay private long enough to stay themselves.