This represented net inflows of over $1bn in the period, including flows of $137m into its new North American Fund by the year end.
Tim Woolley, chief executive at Polar Capital, said: "Investment performance has been strong with seven out of eight long-only funds in the top quartile for the year and four out of our six hedge funds ending the year in positive territory.
"We also continue to deliver on our strategy of diversifying our offering with the addition of three new teams and strategies, bringing us up to eleven teams in total, and expanding our distribution capability further."
The firm established European market neutral and global equity franchises during the year and hired more distribution professionals outside the US.
Polar Capital said it had earned its performance fees for the eleventh consecutive year.