Wall Street 50 – 2019

Niall O’Brien/Well's Fargo & Company


Prior to joining Wells, Niall was a managing director at Citi, where he was the COO for the Americas Equities Division.

Niall also spent 10 years at UBS Securities, where he held various business development roles within the Equities Division focusing on electronic and derivatives trading.

Niall  holds an M.Sc. in applied statistics from Oxford University and a B.A. in mathematics from University College Cork.

Niall grew up in Cork and moved to the US in 2001. He credits his Irish upbringing for instilling in him a strong work ethic, can-do approach and the ability to quickly adapt to challenges, which is reflective of generations of Irish who have always viewed, through travel, the world as a global village.  

He lives in New York with his wife, Pauline and daughter Niamh.