London hedge fund manager GLG Partners has made a net return of 44.45% on its flagship, market neutral fund in the 12 months to May 31. The fund was run primarily by Philippe Jabre, who left to fight accusations of market abuse, until the end of last year.

The fund has risen 25.65% in the six months since December, when former Deutsche Bank proprietary trader Steve Roth took over the fund's management from Jabre, then one of GLG's directors. Roth and his team limited losses to 0.68% in May, when most managers lost money.