The 401(k) Shift

America’s 401(k) system—long seen as a steady way for workers to save—is changing. Private equity firms and large Wall Street investors are expanding their role in the retirement industry. They are buying recordkeepers, consulting firms, third-party administrators, and advisory practices that serve plan sponsors and participants.

For decades, most 401(k) plans relied on mutual funds and index strategies. These investments offered daily pricing, clear valuations, and transparent fees. That structure aligned with ERISA’s fiduciary standards, which emphasize liquidity, transparency, and acting in participants’ best interests.

Now, private equity firms—known for acquiring and restructuring companies outside public markets—are moving into nearly every layer of the 401(k) system.

Wall Street’s Next Growth Area

Private equity’s interest in retirement savings is not new. But it has accelerated in recent years. Retirement and wealth management businesses offer recurring revenue and long-term asset flows. With more than $7 trillion in defined contribution plans, the 401(k) market represents a large and stable capital base.

Many buyout firms have acquired recordkeepers and retirement consulting firms, consolidating smaller providers into larger platforms. Some see retirement services as long-term operating businesses and are investing in technology and scale.

Others see a distribution opportunity: introducing private market investments—such as private equity, infrastructure, and private credit—into 401(k) investment menus.

This raises an important question: does expanded access improve outcomes for participants, or primarily benefit product manufacturers?

Entering the 401(k) Lineup

Historically, private equity funds were largely excluded from 401(k) plans. Fiduciary rules require daily liquidity, clear valuation, and reasonable fees—features that traditional private market funds do not easily provide.

In 2020, the U.S. Department of Labor (DOL) issued guidance stating that private equity could be included within a diversified investment option—such as a target-date or balanced fund—if fiduciaries conduct a prudent process and meet ERISA standards. The guidance did not endorse standalone private equity funds in participant-directed lineups. Plan sponsors remain responsible for careful evaluation and oversight.

Following that guidance, some large asset managers began developing structures that include limited private market exposure within multi-asset funds. These products typically allocate a small percentage to private investments alongside publicly traded securities.

While this approach addresses liquidity and valuation constraints, it also introduces added complexity.

Potential Benefits and Risks

Supporters argue that private markets may enhance diversification and potentially improve long-term returns. Large endowments and pension funds often use private equity and private credit as part of diversified portfolios.

But institutional strategies do not always translate well to participant-directed retirement plans.

Private market investments often involve:

• Multi-year lockups
• Limited liquidity
• Infrequent or model-based valuations
• Higher fee structures

401(k) plans operate on daily pricing and participant trading flexibility. Even when private exposure is embedded within a diversified fund, valuation methods and liquidity management require careful oversight.
Poor structuring could lead to pricing distortions or performance reporting inconsistencies.

Fees also matter. Private market strategies generally carry higher management and performance costs than traditional mutual funds or ETFs. Over decades, small cost differences can materially reduce long-term account values.

Fiduciary Considerations

Under ERISA, plan fiduciaries must act solely in the best interest of participants and beneficiaries. Any inclusion of private market exposure should be evaluated with the same discipline applied to other investments.

Key questions include:

• Does the allocation improve diversification relative to existing holdings?
• Are the fees reasonable for the services provided?
• Is the valuation methodology sound and transparent?
• Can liquidity be managed appropriately within a daily-valued plan?
• Does the investment support participants’ long-term retirement outcomes?
Process, documentation, and oversight remain central. Regulatory guidance allows flexibility, but it does not lower fiduciary standards.

What This Means for Investors

There is no reason for alarm. But there is reason for awareness.

Retirement investing continues to evolve. Private markets may offer benefits in certain structures. They also introduce additional risk, cost, and complexity.

The fundamentals remain unchanged:

• Diversify appropriately
• Keep costs reasonable
• Focus on long-term discipline
• Evaluate risk in the context of retirement goals

Innovation can help participants. But it should be implemented carefully and transparently.

To learn more, schedule a meeting with one of our financial professionals today.

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Sources: EDSA, Dol.gov, Winston & Strawn LLP , ICI, 401(k) Specialist