Hargreaves Lansdown, one of the UK's largest sellers of investment products, is planning to float on the London market, the Sunday Times has said.
The company looks after investments in ISAs, pensions and unit trusts
The move could see the Bristol-based group valued at £600m ($1.2bn) - and net its two founders £240m.
Chief executive Peter Hargreaves and chairman Stephen Lansdown set up the firm in 1981. Each holds about 40% of the firm, with staff owning the rest.
The group looks after around £6bn of funds under administration.
As well as looking after money in pensions, unit trusts and Individual Savings Accounts (ISAs), it also holds a further £850m in investment funds.
The firm has yet to appoint an investment bank to handle its market debut, but began looking at possible candidates last week, the Sunday Times added.
Meanwhile, a spokesman for the group said it was currently "considering its options".
Hargreaves Lansdown owns one of the UK's largest so-called fund supermarkets, a low-cost platform that allows investors to buy a wide range of funds from investment houses as well as a stock broking service.
The group - which began life working out of a bedroom - posted a pre-tax profit of £14.4m for the year to June 2005.