Executive summary
Key takeaways
- OCIO is a spectrum rather than one standardized service model; labels matter less than the authority, implementation, liquidity, and fee terms behind them.
- Custom OCIOs collaborate with institutions on strategic portfolio decisions while retaining discretion over day-to-day implementation and manager selection.
- One-fund OCIOs place clients into a common pooled portfolio, offering immediate diversification and shared access with less customization and more complex exits.
- Hybrid OCIOs combine institution-specific allocation decisions with pooled implementation in selected asset classes.
01
The OCIO model spectrum
After an institution decides to delegate investment responsibilities, it still must choose among materially different arrangements that all use the OCIO label. Alpha describes three broad models - custom, hybrid, and one-fund - as points on a spectrum rather than rigid categories.
The most important distinctions are practical: who sets strategic asset allocation, how much discretion the provider receives, whether assets are owned directly or through pooled vehicles, how liquidity is managed, what customization is available, how fees are charged, and what happens when the relationship ends.
Scroll horizontally to compare
| Model | Decision and implementation structure | Typical fit | Important considerations |
|---|---|---|---|
| Custom | Institution and OCIO collaborate on strategy; the OCIO implements manager and day-to-day decisions. | Institutions needing customization, legacy-asset accommodation, or direct asset ownership. | Building private-market exposure takes time, and small portfolios may face manager minimums or limited access. |
| Hybrid | Strategic allocation remains customized while selected asset classes use OCIO pooled vehicles. | Institutions seeking a middle ground between customization and pooled access. | Vehicle fees, track-record comparability, liquidity, and the unwind process require careful review. |
| One-fund | Client assets join a common portfolio designed and managed by the OCIO. | Organizations seeking an immediately diversified portfolio with substantial delegation. | Customization is limited, fees may be higher, and termination can involve complex or illiquid exit terms. |
02
Custom OCIO
A custom OCIO resembles a traditional consulting relationship for high-level questions such as liquidity, return objectives, risk tolerance, strategic asset-class weights, and institution-specific restrictions. The dividing line is implementation authority: within the agreed investment policy, the OCIO can hire and terminate managers and execute day-to-day portfolio decisions without seeking approval for every action.
This model can preserve direct ownership and accommodate legacy holdings or mission-related constraints. Its tradeoff is that building a fully diversified portfolio - especially in private markets - can take time and may be difficult for institutions that cannot meet manager minimums.
Potential benefits
- High degree of portfolio customization.
- Legacy assets can be incorporated into the design.
- Changing providers may not require transferring out of every underlying investment.
- The governance structure is familiar to committees accustomed to traditional consulting.
Questions to examine
- Whether the institution has enough scale to diversify while meeting manager minimums.
- How quickly private-market exposure can be built and what J-curve effects may follow.
- Which investment ideas or capacity-constrained managers are available to customized accounts.
- How much committee engagement the model still requires.
03
One-fund OCIO
A one-fund OCIO combines an institution’s assets with other clients in a common portfolio using the same strategic allocation and underlying investments. These complete solutions are often designed for endowments and foundations and may be managed by teams that originated within large institutional investment offices.
Because the portfolio already exists, a new client can receive immediate exposure to diversified public and private investments without building each allocation separately. In exchange, the provider rather than the client determines core portfolio objectives and implementation, customization is limited, and exit provisions can be complicated.
Potential benefits
- Immediate access to an established diversified portfolio.
- Shared access to capacity-constrained managers and private-market strategies.
- A reviewable pooled-fund track record.
- A dedicated investment team focused on one common portfolio.
Questions to examine
- Whether the common return, risk, spending, and liquidity profile matches the institution.
- Every layer of cost and how the pooled structure affects pricing.
- Redemption, termination, side-pocket, and illiquid-asset exit provisions.
- Whether the committee is comfortable delegating strategic portfolio design.
04
Hybrid OCIO
A hybrid OCIO combines elements of custom and one-fund arrangements. An institution may collaborate with the provider on its total asset allocation while using OCIO-managed pooled vehicles for selected asset classes. The provider then controls manager selection, weights, and rebalancing inside those vehicles.
The model can give smaller institutions access to implementation resources they could not efficiently assemble on their own while retaining customization elsewhere. Committees must understand both levels of the relationship: the overall mandate and the separate economics, liquidity, performance history, and termination terms of each pooled vehicle.
Potential benefits
- Institution-specific strategic allocation with delegated manager implementation.
- Pooled access where a separate-account structure is impractical.
- Flexibility to retain legacy assets or customize selected portfolio segments.
- A middle ground for committees that do not need full customization or complete delegation.
Questions to examine
- Whether pooled-vehicle track records are comparable across providers.
- How OCIO service fees and underlying vehicle costs are disclosed.
- How long private-market implementation will take and whether it introduces a J-curve.
- Which assets can transfer if the institution changes providers.
05
Models and terms can be mixed
Real OCIO relationships do not always fit one category. A provider may receive discretion in private markets but remain non-discretionary elsewhere, offer a short client veto period, or provide different models depending on an institution’s asset size. Larger mandates often have more structural options.
A disciplined RFP should therefore define the institution’s actual needs and compare the proposed authority, consent rights, asset ownership, liquidity, fees, performance evidence, conflicts, and termination terms. The label alone does not describe the relationship the committee is selecting.