Quintillion, a hedge fund administrator company based in Dublin's docklands, has been bought out by US Bancorp, the fifth largest bank in the US, for an undisclosed sum.

Quintillion, which has about $18 billion of assets under management, employs about 55 staff in the Irish Financial Services Centre, who will all transfer to US Bancorp.

Its management team, led by chief executive Joan Kehoe, will continue to run the company for its new owner under the Quintillion banner. Padraic O'Connor, a former managing director of NCB stockbrokers, is a non-executive director of the company.

Management, comprising six former senior executives from the Irish operation of PFPC International, owned 75 per cent of the business prior to the sale. The remaining stake was held by US investment banking giant JP Morgan.

'No pressure to sell'
Enterprise Ireland, the State agency responsible for growing domestic companies, invested €650,000 in Quintillion preference shares in 2009, which will also be repaid under the terms of the deal.

Ms Kehoe last night said the transaction closed on Friday, following several months of negotiations with the US buyer.

“We were under no pressure to sell, and everybody is staying on,” said Ms Kehoe.