The administration arm’s assets have swelled by £800m in the five months since its last full year report at 30 April 2017.
Concentrated in the firm’s Glasgow and London offices, the administration function of the business has been growing significantly in recent years.
Current assets under administration are double what they were in 2015.
James Gordon, head of Smith & Williamson fund administration said that reaching £10bn in assets under administration “is a major milestone for the business.”
The investment manager, which now boasts one of the largest accountancy businesses in the UK, has provided standalone fund administration services since 1983.
It currently acts as an authorised fund operator for more than 160 funds for investment managers, family offices and private individuals.
Last month, Smith & Williamson nearly merged with wealth manager Rathbones, but decided to pull out of the deal and list on the stock market instead.
Gordon added: “Due to the success of our in-house operational model, the business has been able to build significant market share.
“Today’s announcement is evidence that we, as a business, continue to put clients first and focus on delivering the right solutions.”
