Secrecy continues to shroud much of the hedge fund industry. Many of some of the largest funds in the industry adopt a near-subterranean low profile. A discreet nameplate on an office in London's Mayfair or a basic website is about as far as some funds like to project themselves to the outside world.

Here is a guide to the top 10 managers in Europe ranked in asset size by EuroHedge, the specialist industry research house.