Inflows into the bond funds run by the former Kames fund managers David Roberts and Phil Milburn helped Liontrust assets under management (Aum) rise by 21 per cent in the year to the end of March 2019.
Mr Roberts and Mr Milburn run bond fund assets of £419m, having joined the business in April 2018.
In total the assets under management of Liontrust were £12.7bn at the end of March, compared with £10.5bn at the end of March 2018.
The information was contained in the quarterly trading update from Liontrust, released to the stock market this morning (10 April).
The update also revealed that the company will move all of its funds to a single administrator during the course of this year, with BNY Mellon selected for this role.
Liontrust chief executive John Ions said he regards sustainable investment products as a particular area of growth for the business.
The company acquired a range of sustainable investment products from Alliance Trust in 2017.
Mr Ions said: "We continue to see increasing interest in and flows into our sustainable funds. This is an ever-more competitive area as investor demand for sustainability grows, we are confident about the outlook for our team and the proposition they offer investors.
"The Liontrust team has a track record of more than 18 years of managing sustainable investments, a robust investment process and a broad range of single strategy and managed equity and fixed income funds."