Wealth manager St James's Place (SJP) saw funds under management (FUM) increase by £9.5bn to a record £44.3bn last year.
Total net inflows of £4.3bn combined with the movement of the world's stock markets - almost 50% of the group's FUM is in either UK or US equities - helped the business achieve the figure, which is up 27% on 2012.
New business on an APE basis - most of it investment business - climbed 20% to £762.9m.
Elsewhere, the group said it had maintained a 95% client retention rate and, over the year, had grown adviser numbers almost 10% to 1,958.
SJP chief executive David Bellamy said there was a "reassuring consistency" about the company's performance.
"At the heart of this sustained growth is the importance we place on maintaining long lasting relationships with, and between, our partners and clients and serving them well," he said.
"At a time when access to trusted advice is increasingly in short supply, we remain focused on this aspect of our business and believe our clients value our approach.
"I am confident that the growth we achieved in 2013, in both new investments and partner numbers, bodes well for the continued momentum in our business."
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