Cofunds broke into the black for the first time in its history last year, posting an operating profit of £400,000.
The platform's profitability in 2008 followed a £2m operating loss in the previous year.
Despite the massive market decline in 2008, Cofunds was also able to grow its assets under management - from £14.4bn to £14.6bn. At 21 April, the platform's assets stood at £14.9bn.
"Against a backdrop of unprecedented market turbulence and increased competition in the platform space, Cofunds had a hugely successful 2008," CEO Brett Williams says.
"There were a number of factors that contributed to the success last year, high levels of new business and the continued growth and development of Cofunds institutional business to name just two.
"By being able to remain focussed on our core offering - running a platform - the business was able to cement its leading position in the platform space and in doing so deliver a full-year profit."
Caring for children and elderly relatives
Similar to June 2007
Square Mile’s series of informal interviews
Fine reduced to £60,000
Two roles created