The Bristol-based investment platform paid £600m in dividends during the year to June, with a further £189.3m declared in September, according to its latest accounts.

It comes a year after shareholders were paid £204.8m in the firm’s final full year as a listed company, before it was taken private by CVC Capital Partners, Nordic Capital and Platinum Ivy, a wholly owned subsidiary of the Abu Dhabi Investment Authority.

The takeover was partly financed through £1.75bn of borrowings, with the new owners also embarking on a major overhaul of Hargreaves Lansdown’s technology and products under new chief executive Matt Benchener. Peter Hargreaves, founder of the investment platform, retained a stake in the business and was among the shareholders to benefit from the dividends.

The strong financial performance comes as Hargreaves Lansdown invests heavily in modernising its technology. The company said £100m was invested in its systems and products during the year, with further investment expected as it continues the overhaul.

Hargreaves Lansdown reported a 21% increase in adjusted profits to £637.8m in the year to June, from £527.3m in the previous year. The latest accounts show revenue rose to £992m under its new ownership, compared with £860.6m in the previous year.

The company generated £419.1m in net cash from operating activities, up from £36.8m a year earlier. Its underlying operating costs increased 6.3% to £354.2m from £333.3m, driven by higher people, activity and technology costs.

The £600m distribution to shareholders was made up of several interim dividends during the year. The accounts state that all dividends were paid to Harp Finco, the group’s 100% shareholder.

The wealth manager’s latest results also show continued growth across its underlying operations, with platform fees increasing to £341m from £87.4m.

Fund management fees rose to £61.4m from £15.5m, while active savings revenue increased to £34.6m from £9m. Net interest income rose to £308.5m, compared with £74.8m, while transaction revenue increased to £246.5m from £61.7m.

The group had £204.6bn of assets at the end of June, up from £172.7bn a year earlier, according to the accounts. It also had an average monthly workforce of 2,491 during the year, compared with 2,005 previously, with staff costs increasing to £212.1m.