The firm believes the merger will create a “stronger” asset management business and will result in “a greater range of relevant funds for clients”.
The £11.5bn deal was revealed in September when both firms said there was a “compelling strategic and financial rationale” for the deal to create a “diversified active UK asset manager.”
Mike O'Shea, chief executive of Premier Miton, said: “The creation of Premier Miton Investors creates a new, broader, stronger and exciting UK asset management business.
“Our merger is based on a strong belief in the value that active management can deliver for clients and the conviction that, by bringing together the complementary investment skill-sets, client service platforms and financial strength of Premier and Miton, we will continue to create significant benefits for our existing and future clients.
“Combining our investment talent - including our distinctive specialisms in outcome based multi-asset solutions and high conviction active single strategy funds - results in a greater range of relevant funds for clients, across different asset classes and geographies, covering a diverse range of investment styles.”