Bryan Cohen, formerly at Goldman Sachs, appointed Managing Director New York office to accelerate North American expansion   Validus Risk Management (Validus), the leading independent financial risk advisory and technology firm, today announces that it has opened an office in New York and appointed Bryan Cohen as Managing Director. New York will be the fifth location for Validus, in addition to its existing offices in London, Eton, Toronto and Oslo.Mr. Cohen brings over 15 years’ experience across various areas of risk management and derivatives.