Finnish startup Oura has closed its Series D funding round at $200mn, bringing the smart ring maker’s valuation to a cosy $5.2bn. Oura’s smart ring uses 20 biometric markers to track sleep, physical activity, and stress resilience. The device displays this data on an app that gives you a personalised “readiness” score. We tested the wearable earlier this year and were genuinely impressed. Founded in 2013, Oura secured its first funding on Kickstarter, the crowdfunding site, in 2016. Counting this new tranche of capital, the tech startup has raised $550mn since inception. “We’ve made significant progress in advancing our mission to make…
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