June 30 (Reuters) - Chinese ride-hailing giant Didi Global Inc shares jumped nearly 19% in their New York debut on Wednesday, valuing the SoftBank-backed company at $80 billion and marking the biggest U.S. listing by a Chinese company since 2014. Reporting by Noor Zainab Hussain in Bengaluru; Editing by Arun Koyyur Our Standards: The Thomson Reuters Trust Principles.