Most advisors do not buy institutional private funds directly, because the funds’ own minimums historically ran $5–10 million. Alternative-investment platforms — iCapital and CAIS are the two largest for the RIA and broker-dealer channel — solved that by pooling many smaller client checks into a single feeder fund that buys the underlying institutional fund as one line item. Effective minimums drop to roughly $100,000–$250,000. That access is real and valuable. It is also not free, and the way each platform gets paid matters to your fiduciary math.
The critical structural fact: a platform feeder adds a Layer 3 on top of the underlying fund’s full four-layer stack. You are now paying the manager’s fees and the feeder’s fees. In the worst case — a feeder that charges its own management fee and its own carry — a client can face something approaching a “double 2-and-20.”
The two platform economic models
| iCapital | CAIS |
|---|
| Core model | Technology and feeder-fund infrastructure sold to advisors, plus manager economics. | Technology and custom feeder-fund infrastructure sold to advisors. |
| How it gets paid | Recurring platform / SaaS fees; feeder administration and management fees; and — critically — placement and distribution commissions paid by the asset managers who use the platform to reach advisors. | A technology / structuring fee on custom feeder funds, stated as low as 5 basis points depending on feeder AUM and complexity. CAIS states it takes no placement compensation from the managers on its platform. |
| Fiduciary flag | Manager-paid distribution is, by definition, a pay-to-play arrangement. The question to ask: was this fund on the menu because it is best, or because its sponsor pays for shelf space? | The transactional conflict is genuinely lower. The structural conflict remains: several of these platforms are owned by or aligned with the very managers whose funds they distribute. |
| Client-facing cost | Feeder layer often includes an added management fee and, in some cases, an added performance allocation on top of the underlying fund. Specifics are disclosed only in the feeder’s PPM. | Feeder layer skews toward a thinner, disclosed technology fee, plus the unavoidable administrator, custodian, and audit expenses every feeder carries. |
Source: AltStreet iCapital review, Feb 2026; CAIS, “Sets New Industry Standard for Custom Feeder Fund Fees” (2024); RIABiz (Jul 2024).
Worked example: a “double” fee stack
The two platforms sit at opposite ends of this. On CAIS’s technology-fee model, the added layer can be as thin as 5 basis points. iCapital’s model is heavier, and it is where the “double stack” shows up most clearly: a recurring feeder administration and management fee (commonly ~0.15–0.50%) sits on top of the underlying fund’s fees, and the asset managers pay iCapital placement and distribution commissions to be on the platform — a pay-to-play cost embedded in the product rather than shown on the client’s statement.
One independent review of iCapital illustrates the extreme case with a hypothetical (not platform-disclosed) feeder: if the underlying PE fund charges 2% + 20% carry, and the iCapital feeder adds 0.75% management + 7.5% carry, the client’s combined cost becomes roughly 2.75% annually + 27.5% performance allocation. On a $100,000 investment compounding at 15% gross for ten years, that incremental feeder layer is not a rounding error — it is a materially different net outcome. Always obtain the feeder’s own fee table; never assume the platform layer is trivial.
Source: AltStreet iCapital review, Feb 2026 (illustrative figures). CAIS custom feeder technology fee “as low as 5 bps”: CAIS, “Sets New Industry Standard for Custom Feeder Fund Fees” (2024); RIABiz (Jul 2024).
Direct versus platform feeders: annual cost stack
Underlying management fee (Layer 1)Underlying fund operating (Layer 2)Platform / feeder layer (Layer 3)
PE fund — direct LP annual, ex-carry
= 2.50%
per yr, all-in (ex-carry)
Via CAIS feeder technology-fee model
= 2.55%
per yr · +0.05% platform
Via iCapital feeder admin fee + manager placement
= 3.00%
per yr · + placement commissions
Feeder w/ own carry added mgmt + performance
= 3.25%
per yr · + 7.5% feeder carry
Each bar is a running annual cost sum on a common 0–4.0% scale, ex-carry. The direct LP pays 2.50% all-in before carry. A CAIS-style technology feeder adds only about 0.05% (5 bps) — barely visible, which is the point. An iCapital-style feeder adds a recurring feeder administration and management fee (illustratively ~0.50%, within a commonly cited 0.15–0.50% range), lifting the annual cost to ~3.00%; on top of that, the asset managers on the platform typically pay iCapital placement and distribution commissions — a pay-to-play arrangement that is a conflict embedded in the manager’s economics rather than a separate line on the client’s statement. A feeder that also charges its own economics adds roughly 0.75% of management fee here, lifting the annual cost to ~3.25%, and layers an additional ~7.5% performance allocation on top of the underlying fund’s 20% carry — a profit-share not shown in these annual bars and, for many clients, the larger cost. Underlying management (2.00%) and operating (~0.50%) figures are illustrative; feeder figures per AltStreet iCapital review (Feb 2026) and CAIS custom-feeder disclosure. Actual platform and feeder fees vary by fund and are disclosed in each feeder’s private placement memorandum.
