The organisation is directing the pitch process from its headquarters in New York, but is also thought to have held discussions with firms in London.
The brief is aimed at raising AIG GIG's profile among institutional managers around the world. The move follows a bumpy year for AIG GIG, which manages more than £284bn worldwide.
Last October, for example, the £2.6bn New Hampshire Retirement System dropped AIG GIG from an absolute return mandate.
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