Health-tracking smart ring maker Oura to list on US stock market

Oura, maker of health-tracking smart rings, filed to list on the Nasdaq with a valuation above $11 billion, while rivals like Samsung and Circular are intensifying competition. The company's celebrity fans include Prince Harry and Kim Kardashian.

🐿️ Oura's IPO signals the smart ring market is no longer a niche gadget but a serious contender in wearable tech, forcing investors to watch for challengers.