Rubicon Fund Management, the hedge fund firm which is suing two partners who left earlier this year for breach of contract, saw its fee income rise by 50% in 2010.

According to the latest accounts for Rubicon Fund Management LLP, filed at Companies House, fee income rose from £26m to £39m for the year to December 2010. Fee income is a combination of the management fee charged on the Rubicon Global Fund's $1.65bn in assets and the performance fees earned on the gains of 14% that it posted in 2010. Profits for dividing among the members of the partnership stood at £24m in 2010; up slightly from the £23.6m the previous year.