May 20 (Reuters) – Shares of Oprah Winfrey-backed Oatly Group AB rose 30% in their market debut on Thursday, fetching the world’s largest oat milk company a valuation of about $13 billion as consumer demand for plant-based dairy picks up. (Reporting by Noor Zainab Hussain in Bengaluru; Editing by Vinay Dwivedi)
