The research, based on the last quarter of 2015, also shows that the total value of the funds business grew by 1.2%, equating to an £2.7bn increase.
Close-ended funds on the island experienced a growth of 3.5%, increasing £4.8bn at the end of December 2015 compared to the same time the year before.
Meanwhile, Guernsey open-ended funds saw a year-on-year drop in value of 1.8% or £700,000, bringing the total figure down to £39m.
Non-Guernsey schemes, which consists of open-ended funds that are not domiciled in Guernsey but have some aspect of their management, administration or custody carried out on the Island, increased in value by nearly 10% at £4.1bn annually bringing the total up to £48bn.
Dominic Wheatley, chief executive of Guernsey Finance, the promotional agency for the island’s finance industry, said: “It is extremely pleasing to see that we ended last year with a further quarter of growth and that we saw an increase of more than £8bn for 2015 as a whole.”