Our Members
Any independent specialist investment firm is able to apply for membership. Membership is not automatic and the Board will consider each application as it is made.
As our industry evolves, and in the absence of a universally accepted definition of an “independent investment boutique,” IIMI has established a set of criteria to guide the assessment of whether a firm qualifies for membership. We place particular emphasis on ownership structure, as it fundamentally shapes a firm’s culture, incentives, and day-to-day behaviours. Publicly listed organisations often face external pressures that may conflict with the ethos and operating principles of a genuinely independent boutique. For this reason, only privately owned investment management firms are eligible for IIMI membership.
Membership is open to firms that meet at least four of the six criteria. In certain circumstances, firms meeting three criteria may also be considered on a case-by-case basis. More detailed information can be found in our Member Criteria here.
Our membership year runs from 30th November to the 1st December. The membership fee structure is outlined below:
2025/2026 IIMI Membership fees (per annum):
London based firms (within the M25):
AUM > $500m : £4,725
$500m> AUM > $100m : £2,363
AUM <$100m : £1,125
Firms based outside of London
AUM > $500m : £2,940
$500m> AUM > $100m : £1,470
AUM <$100m : £700
If your organisation is a start-up and you have just begun your asset-raising journey, we are delighted to offer you a two-year grace period on fees* as we support you in your growth.
*A membership fee will be applied once your AUM reaches $100m
For more information please see our Charter and Membership Application Form.
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