Responsible investor Impax Asset Management has seen its assets under management jump 12 per cent over the quarter to crack £5.1bn.
The asset manager had total assets of £4.5bn for the last quarter ending 31 October.
The Aim-listed saw £489m net inflows and a £79m performance boost.
The bulk of the asset managers assets are in listed equity (£4.6bn), but the asset manager also runs £411m in private equity and £22m in real estate.
Chief executive Ian Simm says: “Impax has followed its unprecedented growth during the 2016 financial year with record quarterly inflows into our listed equity funds this quarter, particularly from clients in Continental Europe and North America.”