The multi-manager fund will be SFDR Article 8 and will be run by Andrew Hardy and Lorenzo La Posta.
MGIM said they will utilise a diversified blend of managers with "effective governance and superior management of environmental and social issues".
Impax hires head of distribution for Europe and Asia Pacific
With an investment horizon of over six years and an expected volatility of between 9% and 12%, the base currency of the fund is USD and there will be three other share classes available: EUR (hedged), GBP (hedged) and AUD (hedged).
Andrew Hardy, director of investment management at Momentum, said the new offering "meets a noticeably clear objective for expat advisers, which is to access global growth in a sustainable manner, with multi-asset diversification".
Ferdi van Heerden, CEO of the firm, added the new fund builds off "Momentum's pedigree and long-standing success in multi-asset investing".