The DOL Pathway for Private Assets in 401(k)s  — Are the Guardrails Strong Enough?

The US Department of Labor’s proposal to open 401(k) plans to private market investments marks a pivotal shift in retirement policy — but one that demands far stronger investor protections than currently envisioned.

CFA Institute supports expanding access to private markets in 401(k)s, but only if robust guardrails are in place to protect investors. Without stronger safeguards, the DOL proposal risks exposing retirement savers to complexity, opaque fee structures, liquidity challenges, and potentially lower long-term returns. As policymakers move to “democratize” private markets, transparency, accountability, and fiduciary rigor must remain paramount.

Why the Rule Proposal Matters

For millions of Americans relying on 401(k) plans for retirement security, access alone is not enough. Investor protection, transparency, and trust are equally essential. While private equity, private credit, and other alternative assets may offer diversification and return potential, integrating them into participant-directed retirement plans presents significant structural and fiduciary challenges.

The scale of the DOL proposal is substantial. Estimates suggest that as much as $178 billion annually could flow into 401(k) investments incorporating private assets, affecting roughly 4.5 million participants each year. Such inflows could materially reshape the defined contribution (DC) landscape.

At the same time, private markets are already saturated with capital, with roughly $1 trillion in dry powder awaiting deployment. So, additional recurring inflows from 401(k) plans risk intensifying the longstanding problem of too much capital chasing too few attractive opportunities. Historically, this dynamic has contributed to rising valuations, lower forward returns, and wider performance gaps between top- and bottom-tier managers.

For retirement savers, this creates a paradox: the anticipated benefits of private assets may diminish as broader adoption accelerates. Whether ordinary 401(k) participants can realistically access the same opportunities available to large institutional investors remains uncertain.

Process Alone Does Not Guarantee Protection

The DOL’s proposed safe harbor centers on a six-factor fiduciary analysis of performance, fees, liquidity, valuation, benchmarking, and complexity. The framework emphasizes process — if fiduciaries follow a prudent, documented evaluation approach, they gain protection from liability.

While this structure is sensible in theory, it risks mistaking procedural compliance for substantive investor protection. This is particularly true when it comes to private market experience and complexity. Private markets are not simply more complex versions of public markets; they are fundamentally different in ways that challenge each of these six pillars.

Where the Proposed Framework Falls Short 

1.Performance: What Exactly Is Being Measured? — The proposal asks fiduciaries to assess risk-adjusted expected returns, net of fees. But ambiguity remains: do fiduciaries evaluate the track record of the Target Date Fund (TDF), or the manager of the private market allocation in the TDF, or the expected performance of the underlying private market assets in the TDF? In private markets, this distinction matters. Outcomes are heavily driven by manager skill, yet past performance in a stand-alone fund can be inconsistent and difficult to compare to a slice of a TDF. Without clearer standards, fiduciaries may settle on incomplete or overly optimistic projections.

2. Fees: Complexity Without Clarity — Unlike traditional mutual funds or TDFs, private market investments often carry layered fee structures, including management fees, performance fees, and indirect costs. The proposal rightly avoids mandating the lowest-cost option. But without standardized, all-in fee disclosure, fiduciaries may struggle to make meaningful comparisons. Ultimately, what matters is net performance, but that cannot be assessed reliably if costs are opaque.

3. Liquidity: A Structural Mismatch — Plan participants in a 401(k) expect daily liquidity. Private assets do not provide it. TDFs that incorporate alternatives must bridge this gap using liquidity buffers, valuation smoothing, or secondary market access. These mechanisms can work, but the complexity and potential for liquidity hazards, especially during periods of market stress, are not trivial. The proposal glosses-over on how fiduciaries should evaluate or stress-test these arrangements.

4. Valuation: Precision Challenges — Private assets are typically valued periodically using appraisal-based methods. Yet, 401(k) plans require daily pricing. This disconnect creates great complexity and risks. These include stale or smoothed valuations, understated volatility, and disparities between entering and exiting participants. Without rigorous valuation governance requirements for private assets, fiduciaries may rely on pricing that appears precise but is inherently uncertain.

5. Benchmarking: A Difficult Comparison — Benchmarking a TDF or the private market performance within a TDF structure can be notoriously complex. Requiring fiduciaries to benchmark risk-adjusted returns is reasonable. But without clearer guidance on benchmarking these structures, this becomes more of a compliance exercise than a meaningful evaluation tool and safeguard, undermining fiduciaries’ ability to assess whether participants are receiving fair value.

6. Complexity: Can It Be Outsourced? — The proposal acknowledges that plan fiduciaries may need to retain external expertise to evaluate alternative investments. But this raises a critical question and an obvious challenge regarding the complexity of adding those alternatives to the Plan. Hiring an advisor as substitute for experience and understanding of complexity looks like “check-the-box” compliance. Engaging experts is prudent, but it should not replace genuine understanding by the actual fiduciary when dealing with complex, opaque assets.

Strengthening the Guardrails

If the DOL moves forward with this proposal, several improvements are essential to better protect retirement savers:

• Stronger performance standards: Fiduciaries should be required to use clearer methods for evaluating expected returns, including scenario analysis, stress testing, and rigorous manager assessment.
• Full fee transparency: Plans should provide comprehensive, all-in disclosure of fees and expenses associated with private market investments so fiduciaries and participants can make meaningful comparisons.
• More rigorous valuation oversight: Because private assets are difficult to price, stronger valuation governance standards — including independent oversight by qualified valuation experts — should be required.
• Clear fiduciary accountability: Hiring outside consultants or specialists should not reduce fiduciary responsibility. Plan fiduciaries must remain accountable for understanding and overseeing these investments.
• Better investor education: Plan Sponsors and Fiduciaries who include private asset investment options in the 401(k) Plan must ensure that participants selecting such options receive educational training detailing the risks, liquidity limitations, valuation practices, and fee structures associated with these investments.

Together, these safeguards would strengthen investor protection, improve financial literacy, and support a more responsible approach to incorporating private market investments into 401(k) plans.