Brooks Macdonald Group's funds under management totalled £11.0bn at the end of September - 5.1% up from the end of June.
The group said that as a comparison, the MSCI WMA balanced index increased by 0.8% over the quarter.
Chief executive Caroline Connellan said: '"I am pleased to report that we have seen continued momentum through the first quarter of our new financial year, with strong net new business and portfolio performance, resulting in FUM increasing in all core offerings.
'We are maintaining our focus on capturing the significant growth opportunities open to us while progressing our investment in the business to provide a stronger platform for future growth.
'Notwithstanding our continued caution around markets and client sentiment, we look forward with confidence.'