The deal, which was confirmed in April, is designed to increase the division’s investment capacity.
Standard Life Investments chief executive Keith Skeoch says: “The acquisition of Ignis is another step in Standard Life Investments’ growth story, reinforcing our strong foundations, broadening our third party client base and increasing the range of investment solutions we offer.
“We look forward to working with our new colleagues and welcoming new clients to Standard Life Investments. Our priority remains the continued delivery of strong investment performance and the highest level of client service.”
Ignis made £150m in revenue last year, producing earnings before tax of £52m. The acquisition will make SLI one of the UK’s largest asset houses.