Some of the biggest trading firms in the world are getting in on the bitcoin business

REUTERS/Scott Olson Two of the largest exchange groups in the world areaiming to launch bitcoin derivativesin the fourth quarter. Highfrequency trading firms DRW and Virtu Financial are looking to provide liquidity in bitcoin futures.Quantlab, another HFT, isalso looking at the market. Two of the largest exchange groups in the world are aiming to launch bitcoin futures this year, and at leasttwo big trading firms arelooking to provide liquidity to the would-be market. CME Group, the largest exch...