From Breakingviews - Breakingviews - COMMENTARY: Smart-ring IPO reveals mixed vital signs ↧ ↧ Breakingviews - COMMENTARY: Smart-ring IPO reveals mixed vital signs Oura’s in-vogue health trackers are driving 74% revenue ​growth as it pursues ​a listing. Hardware hiccups and ⁠competition with the likes of ​Apple may slow that pace. ​A $16 bln valuation is in reach, but it’s one befitting a gadget ​maker more than a ​high-flying digital platform.