Segura, 41, will join the company in the next several months, while Groothuis starts on Aug. 2, said the people, who declined to be identified because they’re not authorized to speak publicly.
Segura joined RBS in 2009 and worked at Morgan Stanley for two years. Groothuis, 39, who worked for a year and a half at RBS as a trader of Central America and the Caribbean sovereign debt and previously worked 16 years at Bear Stearns Cos.
Both executives will be based in New York, the people said.
Peter Truell, a Nomura spokesman, declined to comment on Segura’s hiring and didn’t immediately return a call and e-mail on Groothuis. Michael Geller, an RBS spokesman, confirmed Segura and Groothuis no longer work for the bank.
Segura and Groothuis follow at least three other RBS colleagues who have joined Nomura since May. Benito Berber was appointed emerging markets foreign-exchange strategist in June. Steve Ashley and Chris Fleming joined Nomura in May as global head of rates and global head of rates sales, respectively.