Nomura Securities trading floor is pictured at the company’s Otemachi Head Office in Tokyo, Japan, November 18, 2016. REUTERS/Toru Hanai Register now for FREE unlimited access to Reuters.com Register HONG KONG, May 13 (Reuters) – Nomura (8604.T) has begun offering bitcoin over-the-counter derivatives to clients, it said Friday, the latest move by a traditional financial […]