$3.2 billion Eisler told investors it was closing down due to the high costs of talent in September. The firm had more than 250 people based in nine offices across the US, Europe, and the Middle East. The manager has had discussions with onetime rival funds about purchasing their risk system, Photon. Shutting down a hedge fund isn't as simple as turning off the lights and handing the office keys to the building manager. Trades need to be wound down slowly to make sure backers don't lose money in ...