Oura Health Oy, the maker of the Oura health and fitness ring, is raising $875 million in a new Series E financing round valuing it around$10.9 billion, according to a new report from Bloomberg. The round, which is expected to close by the end of the month, would double the company’s $5 billion valuation from its Series D round announced last December. The report notes that the Series E round could still exceed$900 million. Oura has sold 5.5 million rings to date, a notable increase from the 2.5 milli ...