Under the proposed agreement, Argyll will be re-named MitonOptimal Portfolio Management (CI) to reflect the wider MitonOptimal Group, which is based in Guernsey, South Africa and Singapore, the firm said in a statement.
Argyll was established in 2000 as an independent discretionary portfolio manager and it is regulated by the Guernsey Financial Services Commission. It offers investment portfolio management services, a niche discretionary fund management service, bespoke pension services and the Fortress Pension Plan.
The combined group gives $600m of funds under management which cover offshore Guernsey and South African collective investment funds, discretionary portfolios and other institutional mandates.
The deal is subject to final approval by the Guernsey Financial Services Commission.