Janus Henderson, the UK and US fund management business, has stated it is ready for any Brexit outcome.
In a statement accompanying its results for the final three months of 2018, the company stated: "We have completed our contingency preparations, and we are in a strong position to continue to serve investors in the UK and the EU irrespective of the outcome."
During the period in question, Janus Henderson reported a 13 per cent drop in assets under management (AUM) of £252bn.
The company has funds registered in the UK, Luxembourg, and Ireland.
Dick Weil, chief executive of Janus Henderson said: "Against a backdrop of volatile markets and ongoing change in the asset management sector, 2018 was a year of further transformation for our firm.
"On the positive side, we made significant progress driving towards merger completion, transforming from two separate legacy companies into Janus Henderson.
"I am very pleased that we were able to complete our integration efforts and realise our cost synergies well ahead of plan in 2018.
"Additionally, in 2018 the business continued to generate strong cash flow - we returned a majority of this cash flow to shareholders through dividends, repaying our convertible notes and by completing our share buyback."
Unlike some other firms Janus Henderson did not move assets overseas on fears about the outcome of Brexit.