Private Markets Are Coming for the 401(k)

For decades, American retirement investing has operated through two very different systems. A public pension fund can invest in private equity, private credit, infrastructure, real estate, hedge funds, and other assets that may remain illiquid for years. A private-sector employee saving through a 401(k), by contrast, generally receives a portfolio built around public equities, public bonds, mutual funds and target-date funds composed largely of those same public securities.

The difference is enormous. In 2022, 99% of state and local government defined-benefit pension plans held alternative investments, with alternatives representing approximately 34% of their total assets. Among Fortune 1000 defined-benefit plans, 68% held alternatives in 2023, representing roughly 18% of aggregate portfolios. In defined-contribution plans, meanwhile, only 4% of plans offered alternative investments in 2024, and alternatives represented just 0.1% of total defined-contribution assets. That gap has existed for years, but it may finally be beginning to close.

In August 2025, President Trump issued an executive order directing federal agencies to reconsider the regulatory barriers surrounding alternative assets in 401(k) plans. In March 2026, the Department of Labor followed with a proposed rule providing a clearer process and potential safe harbor for fiduciaries evaluating investment options containing private equity, private credit, infrastructure and other alternative assets.

The financial industry is already building products around the possibility. BlackRock and Great Gray have developed a target-date series incorporating private equity and private credit, and Goldman Sachs Asset Management subsequently added a private-credit collective investment trust to that structure. Sitting behind the regulatory discussion is an extraordinary pool of capital, which is why this could become one of the largest changes to American retirement investing in decades.

The $9.9 Trillion Door

Americans held approximately $47.6 trillion in retirement assets as of March 31, 2026, equivalent to roughly 34% of U.S. household financial assets. Defined-contribution plans accounted for $13.8 trillion, and 401(k)s alone held $9.9 trillion. The Investment Company Institute estimated that roughly 70 million active participants were already covered by about 730,000 401(k) plans as of September 2025. The scale changes the conversation: private markets do not need anything close to full penetration of the retirement system to create enormous capital flows.

Every 1 percentage point of today's $9.9 trillion 401(k) pool represents approximately $99 billion. A hypothetical 5% allocation would represent almost $500 billion, while a 10% allocation would approach $1 trillion. Those are illustrative calculations rather than forecasts, but they explain why almost every large alternative-asset manager has an economic reason to care about retirement distribution.

The Department of Labor's own regulatory analysis illustrates how quickly the numbers could become meaningful. Under one set of assumptions used to model the proposed rule, DOL estimated that new target-date funds incorporating alternatives could affect approximately 47,000 plans, 4.5 million participants, and $178 billion of assets each year as plans periodically replace or add target-date series. The Department emphasizes that these are scenario-based estimates rather than predictions and acknowledges substantial uncertainty around actual adoption. Even the conservative possibilities are large.

And that raises a basic question. If a 25-year-old worker may not need most of their retirement savings for another forty years, why must almost every underlying asset they own be capable of trading every second?

Retirement Has Had Two Classes of Investor

The case for private-market access begins with a legitimate inconsistency. Consider two American workers: one is a firefighter whose retirement benefits come through a professionally managed public pension, while the other works for a private company and saves through a 401(k). The firefighter's pension may own private companies, infrastructure projects, private loans, and real estate, while the private-sector employee may own almost exclusively publicly traded stocks and bonds. Both are saving for retirement, and both have long investment horizons, yet only one has indirect access to the full institutional investment universe.

SEC Commissioner Mark Uyeda highlighted exactly this distinction in March 2026, pointing to the disparity between public-sector workers whose pension funds have long held private-market assets and private-sector workers relying on 401(k)s. His remarks reflect his own views rather than an official position of the entire SEC, but they capture one of the central arguments driving the policy shift.

The Department of Labor's numbers make the divide even clearer. In 2022, alternatives represented 34% of state and local pension holdings; in 2024, they represented just 0.1% of DC-plan assets. There are good reasons for some of that difference. Defined-benefit pension plans operate as large pools of professionally managed capital, allowing them to employ investment teams, consultants, actuaries and lawyers, forecast aggregate benefit payments, and avoid calculating a separate immediately transferable account value for every participant every day.

A 401(k) operates differently. Every employee has an individual balance, and participants may change jobs, roll accounts into IRAs, retire, rebalance, make permitted withdrawals, or transfer accounts to beneficiaries. The investment architecture therefore has to support a much more complicated liquidity and recordkeeping environment. Still, a zero allocation to private markets is a very extreme solution to those challenges.

That is why the emerging debate is less about whether private assets can generate attractive returns. Institutional investors answered that question decades ago. The harder problem is whether private assets can be packaged in a way that works for a defined-contribution liability structure.

Why This Is Happening Now

Three forces are converging. The first is regulatory. President Trump's August 2025 executive order established a federal policy favoring access to investment funds containing alternative assets when fiduciaries conclude that doing so can improve net risk-adjusted retirement outcomes. The Department of Labor then proposed a new fiduciary framework on March 31, 2026. As of August 20, 2026, that remains a proposed rule, rather than a final requirement or blanket authorization directing employers to add private assets. The Federal Register continues to classify the measure as proposed.

That distinction matters. Private-market exposure in 401(k)s was never simply illegal. The bigger obstacle has been fiduciary risk. Under ERISA, employers and other plan fiduciaries can face litigation over the investment options they select. Private investments introduce obvious areas for challenge: fees, valuation, liquidity, performance measurement, manager selection, and complexity. The proposed DOL framework attempts to make the decision-making process clearer. It asks fiduciaries to evaluate factors including expected performance, fees, liquidity, valuation, and appropriate benchmarks, with the broader objective of judging investments on net risk-adjusted outcomes rather than treating individual asset classes as inherently prudent or imprudent.

The Department has also become more explicit about litigation risk. In July 2026, it filed an amicus brief supporting dismissal of a case alleging that Intel acted imprudently by including hedge-fund and private-equity exposure in retirement investment options. The Department's position was that the presence of nontraditional assets and subsequent performance alone do not establish imprudence. That may sound like a technical legal development, but for plan sponsors it is fundamental: a private-market product can exist, an employee can want it, and an asset manager can build it, yet an employer is unlikely to put it into a retirement plan if the expected benefit is outweighed by the possibility of years of litigation. The policy shift is therefore as much about fiduciary confidence as investor access.

Wall Street Has Started Building the Product

The second development is structural. The industry is finding ways to fit private markets inside retirement vehicles employees already understand. The likely model does not involve asking an employee to select an individual leveraged-buyout fund from a 401(k) menu; it looks much more ordinary. A target-date fund might combine public equities and bonds with private equity, private credit, and potentially other institutional assets, with the allocation changing automatically as the participant approaches retirement.

Target-date funds are an obvious distribution vehicle because they already dominate the defined-contribution system. The Department of Labor reports that roughly 85% of plans offered a target-date fund in 2024, while Vanguard administrative data cited by DOL showed approximately 84% of DC-plan participants used target-date funds that year. Among large participant-directed plans, roughly 90% reported having a target-date fund.

In other words, Wall Street does not need to teach tens of millions of workers how to become private-equity limited partners. It can potentially place a modest private allocation inside the retirement product workers already own. That is exactly what Great Gray's Panorix Target Date Series is designed to do. Great Gray selected BlackRock to construct the glidepath and provide public-market and private-equity exposures, while Wilshire oversees implementation and liquidity management. Goldman Sachs Asset Management subsequently contributed a private-credit collective investment trust.

BlackRock's scale makes the experiment worth watching. At the time the partnership was announced in June 2025, BlackRock reported approximately $1.7 trillion in defined-contribution assets under management, including more than $500 billion in its LifePath target-date franchise. Great Gray then managed more than $210 billion in collective trusts; by June 30, 2026, its broader platform reported approximately $371.8 billion in fund assets. None of those figures represent assets invested specifically in Panorix. They illustrate something more important: the distribution infrastructure already exists at enormous scale. The private assets are being designed to plug into it.

The Case for Private Assets Is Stronger Than the Marketing Slogan

There is a legitimate investment case here. Retirement capital is naturally long duration. A worker beginning to save at 25 may have forty years until retirement and potentially several additional decades over which those savings are spent. Liquidity remains important at the plan level. But demanding daily liquidity from every underlying dollar can be economically inefficient when the liability is several decades away. Private assets can potentially compensate investors for accepting that illiquidity. They can also broaden exposure beyond listed securities. This has become more relevant as a growing portion of corporate development happens before companies reach the public markets.

Commissioner Uyeda described modern IPOs as increasingly functioning as liquidity events for early investors rather than the beginning of a company's growth story. The Department of Labor similarly notes that private markets have grown dramatically over the past decade while companies increasingly remain private and rely on private sources of capital. For retirement investors, the argument is straightforward. If companies create a larger share of their value while privately held, restricting long-term savers to listed securities may gradually shrink the investment universe available to them.

Private credit adds another potential source of return, infrastructure can introduce long-duration cash flows, and private real estate can provide exposure to assets that behave differently from listed equities and bonds. The diversification argument is real, as is the possibility of higher returns. BlackRock has modeled a target-date strategy incorporating private equity and private credit and estimates that purpose-built private-market exposure could add approximately 50 basis points of annual return. Compounded across 40 years, BlackRock estimates that could result in approximately 15% more retirement savings.

That estimate deserves an enormous asterisk. BlackRock is one of the world's largest private-market managers and has a direct commercial interest in expanding private-market access. Its forecast depends on capital-market assumptions about future private-asset returns. Those assumptions may prove too optimistic. Fees, manager selection, and changing valuations can materially alter outcomes. Still, the arithmetic demonstrates why the debate exists. An additional 0.50% annually sounds trivial. Over forty years, compounding makes it anything but trivial. The correct question is whether private assets can deliver that incremental return after fees, after liquidity costs, and after adjusting for risk.

Private Markets Want the 401(k) Too

The democratization argument, however, only explains half the story. Private-market managers have their own reasons to find new investors. The industry has accumulated enormous assets while simultaneously experiencing a prolonged slowdown in exits and distributions. McKinsey estimates that distributions relative to private-equity AUM fell to approximately 6% during the 12 months ending June 2025, compared with an average of 16% during 2015–2019. Five-year rolling distributions relative to AUM fell to their lowest recorded level, around 10%.

Meanwhile, private-equity secondaries transaction volume increased approximately 48% in 2025, reflecting growing demand from investors seeking liquidity from existing holdings. This matters because the private-market industry has been expanding its sources of capital. Traditional institutional LPs remain important, but managers are also pushing into insurance balance sheets, family offices, high-net-worth wealth platforms, evergreen funds, semi-liquid structures and retirement accounts.

The marketing language describes this as democratization. That description can be completely sincere. It is also an asset-gathering strategy. The two explanations can coexist. Workers may benefit from access to private assets. Private-market managers may benefit from access to workers' savings. The important question is whether the product design aligns those interests.

The Liquidity Paradox

This is where the experiment becomes difficult. Traditional private-equity funds are deliberately illiquid, and the Department of Labor notes that private partnerships commonly involve commitments of roughly ten years before investors expect full return of capital and profits. A 401(k) account behaves very differently: participants expect an account value and may change allocations, leave their employer, roll their balance into another account or retire. The underlying investment portfolio therefore has to accommodate liquidity even if the private assets themselves cannot.

A target-date structure offers one solution. Imagine a fund holding 90% liquid public assets and 10% private assets. Most routine withdrawals can be funded from the liquid portion, while employee payroll contributions, dividends, bond coupons and private-market distributions continually add liquidity. The private assets therefore do not need to trade every day simply because the fund itself offers daily participant accounting.

The Department of Labor explicitly discusses this structure in its proposed rule, noting that combining illiquid investments with public assets can allow liquid holdings and ongoing inflows to absorb redemption needs. Under ordinary conditions, the architecture can work very well. Stress creates a harder problem: if equities fall 30%, public bonds decline, and private holdings are still reported using quarter-end valuations, the liquid side of the portfolio falls immediately while private NAVs adjust more slowly. A portfolio originally designed to hold 10% private assets might suddenly show 12%, 14% or more simply because the denominator shrank.

If participants then begin withdrawing, the fund sells liquid securities to meet those redemptions and the private allocation rises further. Institutional investors know this phenomenon as the denominator effect. The Department of Labor's proposal directly recognizes the problem, giving the example of a fund targeting 90% liquid assets that experiences a large withdrawal and temporarily falls below that allocation as it uses liquid holdings to fund redemptions. In sufficiently difficult conditions, the fund could potentially need redemption restrictions or advance notice. That is the paradox: the long time horizon of retirement savers makes private assets attractive, while the individual-account structure of the 401(k) makes liquidity essential.

What Is the Private Company Worth Today?

Valuation may be an even harder problem. Apple has a market price every second. A privately owned industrial company does not. A private-equity manager typically values its portfolio through models, comparable-company multiples, recent transactions and other fair-value methodologies. Those processes can be rigorous. They still produce a fundamentally different price from a continuously traded public market.

Imagine public equities fall 25% during a quarter. A comparable private company might eventually deserve a similar valuation adjustment. But its reported NAV may change much more gradually. That can make private assets appear less volatile. Some of that stability reflects genuine differences in capital structure, investor behavior and business exposure. Some reflects valuation smoothing.

In a traditional closed-end private fund, this is manageable because LPs are not redeeming every afternoon at NAV. Inside a retirement vehicle, valuation becomes a question of fairness between participants. Suppose Employee A leaves a company and redeems their target-date fund at today's NAV. Two months later, the private portfolio is marked down substantially. If the previous NAV was too high, Employee A may have received more than the economic value of their share. The investors who remained effectively absorb part of that adjustment.

The opposite can occur if private assets are valued too conservatively. Departing participants may leave value behind. This is why the Department of Labor devotes substantial attention to valuation in its proposed rule. The proposal would require fiduciaries to determine that an investment option has adequate procedures to be timely and accurately valued, and it specifically warns about conflicts where a private-market manager may influence valuations of assets transferred between affiliated vehicles. That is not regulatory housekeeping. It is one of the central requirements for making private markets compatible with individual-account retirement savings.

Fees Could Decide the Entire Experiment

The American 401(k) market has spent decades moving toward lower costs. Index funds pushed management fees toward a handful of basis points. Collective investment trusts created additional institutional economies of scale. Employers increasingly face litigation around excessive fees. Private markets evolved under an entirely different fee structure. Management fees. Carried interest. Fund expenses. Transaction costs. Administrative costs. Potential layers of underlying vehicle fees.

The eventual 401(k) products will almost certainly look different from traditional private funds, particularly because enormous retirement pools can negotiate institutional economics. But competing with a low-cost index target-date fund remains difficult. That does not automatically make private assets unsuitable. The cheapest product is not necessarily the best investment. Suppose: Portfolio A costs 0.05% and returns 6%. Portfolio B costs 0.75% and returns 7.5% after fees. Portfolio B is more expensive. The saver is also better off. The fiduciary question therefore has to focus on net value, rather than fees in isolation.

DOL's proposal takes that approach essentially. Fiduciaries would need to understand the fees charged and determine whether those costs are appropriate relative to the investment's value proposition and expected risk-adjusted returns. The difficulty is proving that value proposition in advance. Private-market returns vary enormously by manager. And that leads to perhaps the most underappreciated problem in the entire democratization debate.

Access Is Not the Same as Good Access

Saying that an investor has "access to private equity" tells us remarkably little. Private equity is not a homogeneous asset class. Neither is private credit. Returns vary substantially by: manager, vintage, strategy, sector, entry valuation, leverage, deal sourcing, and operating capability. This creates a potential adverse-selection problem. The best-performing private-market managers frequently have long-standing relationships with pensions, endowments, sovereign wealth funds, and other institutional LPs. Their flagship funds can be oversubscribed. They may have little need to raise incremental retail capital.

So when 401(k) distribution expands, the relevant question becomes: Which private assets actually enter the retirement system? If workers gain access to the same institutional strategies demanded by sophisticated pensions, democratization has real substance. If they primarily receive the products managers find easiest or most profitable to distribute, access alone accomplishes far less. This problem becomes especially important because private assets are difficult for an ordinary saver to evaluate directly. A worker can compare two S\&P 500 index funds relatively easily.

Fees are transparent. Holdings are transparent. The benchmark is obvious. Comparing two private-equity strategies is much harder. Reported IRRs may cover different vintages. NAVs rely on different assumptions. Cash flows occur at different times. Leverage differs. Benchmarking becomes complicated. The Department of Labor recognizes this problem too. Its proposal requires fiduciaries to identify a meaningful benchmark with similar mandates, strategies, objectives, and risks rather than compare every alternative investment against an unrelated public index.

The real democratization mechanism therefore is not simply giving the employee another button to click. It is giving the employee access to institutional underwriting infrastructure. That is why professionally managed target-date structures make far more sense than putting a menu of individual PE funds in front of workers. The saver should not need to become a private-equity analyst. Someone acting as a fiduciary should already have done that job.

The Behavioral Case Is More Interesting Than It Looks

Illiquidity also has a strange advantage. Investors frequently damage their own returns through behavior. They sell after markets fall. They chase assets after they rise. They trade around headlines. They abandon long-term plans during periods of volatility. Private markets mechanically prevent some of this behavior because the underlying investments cannot be traded continuously. That should not be romanticized. An investor being unable to sell an asset can be extremely painful when they actually need liquidity.

But retirement portfolios create a peculiar context. A 25-year-old participant probably should not be making tactical decisions about a forty-year investment horizon because the S\&P 500 fell 8% this month. A target-date structure with a modest private allocation can isolate part of the portfolio from that behavior. The illiquidity is managed at the fund level, while the individual continues to own a diversified retirement vehicle.

That creates an interesting distinction. For the portfolio manager, illiquidity is a risk that must be engineered carefully. For the long-horizon saver, controlled illiquidity can sometimes function as behavioral discipline. That is one of the strongest arguments for integrating private assets into retirement portfolios rather than offering them as standalone options.

Who Actually Benefits?

The answer depends on which participant in the system you ask.

The worker

The potential benefit is access to a broader investment universe that includes private companies, private loans, infrastructure, real estate and other long-duration assets, along with the possibility of higher risk-adjusted returns. The cost comes through greater complexity, higher fees, less transparent valuation, and exposure to assets that cannot always be sold when desired.

The employer

A broader investment menu can potentially improve retirement outcomes and employee benefits. It also increases the sophistication required of the fiduciary process. The employer must understand what it is buying on behalf of workers and be capable of defending that decision.

The asset manager

The attraction is obvious. A $9.9 trillion 401(k) market represents an enormous recurring capital pool. Unlike fundraising cycles that require managers to return to institutional LPs every few years, retirement contributions arrive continuously through payroll, so even modest penetration could create hundreds of billions of dollars in new private-market demand.

The private company or borrower

A larger private-market investor base means more financing capacity. Growth companies can remain private longer, middle-market borrowers gain another source of credit, and infrastructure projects gain another pool of long-duration capital. That final effect could change the structure of American capital markets more broadly.

Democratizing Private Markets Could Make Markets More Private

There is a fascinating second-order consequence. For years, one criticism of the expansion of private markets has been that ordinary investors increasingly enter companies only after much of their growth has already occurred. A startup may raise venture capital, then growth equity, then another private round and perhaps private credit before eventually going public fifteen years after being founded. At that point, early investors receive liquidity while the public gains access to a much more mature company.

Opening private markets to 401(k)s could partially solve that access problem. But it may also reinforce the dynamic that created it.

Consider the feedback loop: Companies stay private longer → Retirement investors increasingly need private-market access to participate in corporate growth → More retirement capital enters private markets → Private companies gain access to even deeper pools of capital → The need to enter public markets declines further.

That would be a remarkable outcome. A policy designed partly to give ordinary investors access to private companies could simultaneously make it easier for those companies to remain private. The boundary between America's public and private capital markets would become even less distinct. The Department of Labor itself acknowledges this uncertainty, warning that sufficiently large flows into alternative assets could alter their return characteristics.

That deserves more attention. The historic illiquidity premium exists partly because private assets are scarce, difficult to access and operationally complex. If trillions of dollars eventually compete for the same assets, some of that premium should logically compress. Democratization can change the asset being democratized.

There Is No Free Institutional Lunch

The strongest case against private markets in 401(k)s is therefore not that private assets are inherently dangerous. Pensions have owned them for decades. The stronger criticism is that the institutional framework surrounding those investments matters enormously. A large pension does not simply wire money into "private equity." It employs or hires people to: select managers, negotiate fees, monitor portfolios, review valuations, manage capital calls, forecast liquidity, build vintage diversification, evaluate co-investments, and manage exposure across the total portfolio.

Those capabilities are part of the investment, because a private-market return cannot be cleanly separated from the institutional structure required to obtain it. Defined-contribution plans therefore have to recreate those functions somewhere, whether through target-date managers, CIT trustees, consultants, recordkeepers, independent valuation processes, liquidity managers or ERISA fiduciaries. The investor receives simplicity only because complexity has been transferred upward into the product architecture. That is probably how it should work. The danger comes when the industry democratizes the asset without democratizing the quality of the machinery surrounding it.

The Experiment Is Worth Running

There are legitimate reasons to be skeptical of Wall Street's democratization language. Private-market firms want additional AUM, traditional institutional investors are demanding more liquidity, distributions have fallen sharply relative to AUM, and managers are expanding aggressively into private wealth and retirement. Adding 401(k)s to that strategy is economically attractive. None of that means retirement savers should be excluded. A worker saving for forty years has one of the longest investment horizons in the financial system, and there is little economic justification for insisting that 100% of that worker's retirement assets must exist in securities capable of trading every second.

There is also an increasingly difficult fairness question when a public pension beneficiary can participate in private equity, private credit and infrastructure while a private-sector saver cannot. The answer, however, cannot simply be access. The quality of access depends on the manager, valuation process, liquidity management, fees, governance, portfolio construction and the proportion of the retirement account allocated to illiquid assets.

Private markets work because investors accept characteristics public markets largely eliminate: less liquidity in exchange for potential return, less frequent valuation in exchange for ownership of assets that do not trade continuously, and greater complexity in exchange for a broader opportunity set. Those tradeoffs do not disappear when the investor becomes a 401(k) participant; they have to be managed on the participant's behalf.

The Real Test of Democratization

American retirement investing may be approaching a meaningful transition. There are $47.6 trillion of retirement assets in the United States, including $13.8 trillion in defined-contribution plans and $9.9 trillion specifically in 401(k)s. Yet as recently as 2024, alternatives represented only 0.1% of DC assets, compared with substantial allocations across public and corporate defined-benefit pensions. The regulatory wall is beginning to move, products are being built, and asset managers want the capital. Against that backdrop, the economic argument for giving long-duration retirement savers access to long-duration investments is difficult to dismiss.

The outcome will depend on how that access is constructed. If workers receive institutional-quality managers, disciplined valuation, reasonable fees, professionally managed liquidity and diversified exposure embedded within retirement portfolios designed around decades rather than quarters, private markets could become a meaningful evolution of the 401(k). They could give ordinary workers access to forms of capital formation that pension funds, endowments and wealthy families have used for generations.

If the products instead become a distribution channel for expensive assets, stale valuations and managers that need capital more than retirement savers need their funds, the same democratization could simply spread private-market risks across a much larger population. That distinction is everything. For decades, the defining virtues of the 401(k) have been transparency, portability and liquidity. Private markets derive much of their economics from characteristics that sit in tension with each of those virtues.

Bringing the two systems together could improve American retirement investing. It could also expose exactly why they evolved separately in the first place. The question is no longer whether private markets can enter the 401(k). The real question is whether Wall Street can redesign private markets around the retirement saver, rather than redesigning the retirement saver around private markets.