Bob Greifeld on derivatives, carbon trading and the US economy

Part 2: Mr Greifeld, talking to the FT from Nasdaq's offices in New York's Times Square, discusses his organisation's acquisition strategy and the relationship with Dubai; why the LSE deal didn't work; the greater focus on derivatives; and globalisation and the US election. Next week: Eric Dinallo of the New York State Insurance Department. If you would like to propose a question for Mr. Dinallo, please email it to the address below.