The former head of systematic equities at Bear Stearns Asset Management has completed his separation from Bear of his recently launched asset management firm, and brought to his new business approximately $9.4bn (€6bn) in assets and some members of his former team of Bear portfolio managers.

James O’Shaughnessy, now the chairman and chief executive of O’Shaughnessy Asset Management, which focuses on quantitative equity management, announced his intention to start the company at least as early as last summer.