Oura, the smart ring maker, has confidentially filed for a US IPO, signaling a strong rebound in the public markets. Valued at $11 billion, the Finnish company tracks health metrics and has sold over 5.5 million rings globally. This move follows SpaceX's own IPO filing, potentially paving the way for more companies to go public.

Oura is the latest household name to test public markets in what is shaping up to be the busiest year for tech IPOs since 2021.

Finnish smart-ring maker Oura has filed confidentially for a US IPO, less than a year after closing an $11bn Series E and crossing $1bn in sales.