Polar Capital's assets grew 20.6% to $3.05bn (£1.9bn) over the six months to 30 September, despite a difficult period for its hedge funds.
William Calvert and his Axa Framlington emerging markets team are joining Polar Capital in October.
Polar Capital's assets under management rose 71% to $2.5bn (£1.7bn) in the year to 31 March 2010.
Polar Capital's Ben Rogoff has put the 3% cash position in his Technology trust back into the stock market as valuations become compelling after the recent correction.
Polar Capital has raised £89m for its new Global Healthcare Growth & Income trust.
The £408m Polar Capital Technology Trust beat its benchmark over one year as technology stocks have benefitted from a cyclical upturn, the manager says.
Polar Capital's forthcoming Global Healthcare Growth & Income trust will launch with a partial allocation to growth stocks that overlaps existing holdings in its Healthcare Opportunities fund.
Asset.TV talks to manager Daniel Mahony about his Polar Capital Global Healthcare Growth & Income Trust