There is a push underway to bring private markets into 401(k) plans.
On the surface, it sounds reasonable.
More access.
More diversification.
Potentially higher returns.
But that framing skips a more important question:
Are private markets compatible with the structure of a 401(k)?
What Is Actually Being Proposed
A recent proposal from the Department of Labor would allow broader inclusion of private investments inside 401(k) plans.
Not directly, but through:
- Target-date funds
- Managed accounts
- Diversified vehicles
With a requirement: fiduciaries must follow a documented, prudent process.
That process includes evaluating:
- Performance
- Fees
- Liquidity
- Valuation
- Benchmarking
- Complexity
On paper, this is reasonable.
In practice, this is where the problem begins.
The Structural Mismatch
401(k)s are built on three assumptions:
- Daily liquidity
- Transparent pricing
- Comparable investment options
Private markets operate on the opposite:
- Limited liquidity
- Subjective valuation
- Complex fee structures
This is not a small gap.
It is a structural mismatch.
Where Complexity Enters
1. Valuation Is Not Observable
Public assets are priced continuously.
Private assets are not.
Their value depends on:
- Appraisals
- Models
- Assumptions
This creates a lag between reality and reported value.
2. Fees Are Not Comparable
Private investments often include:
- Management fees
- Performance fees (carry)
- Embedded leverage costs
Even today, there is uncertainty on how these costs will be disclosed within retirement plans.
This makes comparison difficult.
And comparison is the foundation of fiduciary decision-making.
3. Liquidity Is Constrained
401(k) participants expect access.
Private investments impose:
- Lock-ups
- Redemption limits
- Delayed exits
These constraints do not align cleanly with participant behavior.
The Fiduciary Problem
Plan sponsors are not optimizing for return alone.
They are optimizing for:
- Legal defensibility
- Simplicity
- Participant clarity
Even today, lawsuits related to fees are rising.
Introducing complexity increases risk.
Not just investment risk.
But fiduciary risk.
Facts, Inference, Opinion
Facts
- Private investments may be included under a structured fiduciary process
- Evaluation requires analysis of fees, liquidity, valuation, and complexity
- Fee transparency and comparability remain unresolved
Inference
- Private markets introduce dimensions that are difficult to standardize
- Fiduciaries may hesitate despite regulatory clarity
Opinion
- Access is being expanded before structure is fully resolved
- Complexity is being underestimated relative to perceived return benefits
What Is the Real Trade-Off
This is not about access.
It is about trade-offs.
Potential benefit:
- Higher return opportunities
- Diversification
Structural cost:
- Lower transparency
- Reduced liquidity
- Higher complexity
The question is not whether private markets are good.
The question is whether they belong inside a system designed for simplicity.
What Would Need to Improve
For this to work effectively:
- Fee disclosure must become standardized
- Valuation methods must be more transparent
- Liquidity structures must align with participant expectations
Until then, the system remains incomplete.
The Core Insight
This is not just a product expansion.
It is a shift in the design philosophy of retirement systems.
From:
- Simple
- Transparent
- Liquid
To:
- Complex
- Opaque
- Partially illiquid
That shift should not be taken lightly.
Closing Thought
Access is often framed as progress.
But in investing, access without clarity can introduce more risk than opportunity.
The question is not whether private markets belong in portfolios.
It is whether they belong in default retirement systems.
Disclaimer: Nothing here should be considered an investment advice. All investments carry risks, including possible loss of principal and fluctuation in value. Finomenon Investments LLC cannot guarantee future financial results.
