StoneX Completes Acquisition of R.J. O’Brien, Strengthening Derivatives Dominance

StoneX Group Inc. has finalized its acquisition of R.J. O’Brien, the oldest independent futures brokerage in the U.S., marking the most significant deal in StoneX's history. The merger unites two industry giants with over 200 years of combined derivatives expertise, positioning StoneX as the largest non-bank Futures Commission Merchant in the country.

R.J. O’Brien, founded in 1914, brings 75,000 client accounts and a network of 300 introducing brokers to StoneX. The acquired firm generated $766 million in revenue and $170 million in EBITDA during calendar 2024, adding substantial financial heft to the combined entity.

The deal grants clients access to nearly every major global derivatives exchange through one of the industry's most comprehensive multi-asset platforms. RJO's clients now gain exposure to StoneX's OTC hedging capabilities, physical commodity services, and DEEP liquidity across fixed income products.