The investment firm of hedge fund billionaire Steven A Cohen is considering opening an office in London, 18 months after closing its UK unit in the wake of admitting insider trading charges.

Cohen's SAC Capital Advisors admitted to insider-trading charges in 2013 and paid $1.8 billion in fines and other penalties. Following the settlement, the firm stopped managing money for outside clients and changed its name to Point72 Asset Management. It has since acted as a family office managing the assets of its chairman and chief executive Cohen, who Forbes estimates is worth $11.4 billion, and other staff.