Wall Street anticipates a $10 trillion opportunity as Washington revises 401(k) regulations.

The federal government is set to revise the parameters of retirement accounts in the United States.

The US Department of Labor has introduced a new regulation that clarifies how 401(k) fiduciaries (the employer committees legally accountable for investment decisions within plans) should assess so-called “alternative” assets, which encompass private equity, private credit, and…digital assets.

This proposal emerged directly from an executive order signed by President Donald Trump in August 2025, which instructed the Labor Department to broaden retirement plan access to alternative assets. It establishes a documented procedure, essentially a compliance checklist with legal implications, and provides a “safe harbor” for employers who adhere to it meticulously: a layer of protection if participants later contest the decision.

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Why this matters: The proposal currently excludes Bitcoin and private funds from retirement plans. It lays out the legal framework that employers would depend on when incorporating alternative assets in the future. Wall Street views this as the initial stage of a much larger distribution conflict.

At the end of 2025, Americans held $10.1 trillion in 401(k) plans alone, as reported by the Investment Company Institute. Any regulation that alters what can be included in those plans does not need to be implemented rapidly to influence a significant amount of capital.

Even a minor adjustment in the allocation of a portion of that capital could signify one of the largest expansions of the alternative investment market in a generation, and asset managers overseeing private equity and private credit funds have recognized this for years.

The proposal does not compel any plan to incorporate new investments and does not designate any asset class as specifically approved or endorsed. It states, in carefully neutral regulatory terms, here is the process that renders a decision defensible.

Following the publication of the rule, a 60-day public comment period commenced. The final version, if it endures that process and the inevitable legal examination, will incorporate any modifications the Department decides to implement. Progress in Washington is typically slow, and that pace itself serves as a form of protection for the millions of workers who have never accessed their retirement account portal.

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Your employer isn’t hurrying to include Bitcoin, but Wall Street is keenly observing what unfolds next

The aspect that most coverage of this proposal has downplayed, and the part that is most significant for understanding the ongoing debate, is that while cryptocurrency may be the focal point, private credit and private equity are actually the primary subjects.

The Bitcoin angle is always appealing to readers and genuinely pertinent to policy, but most institutional analysts who have examined the proposal believe digital assets are likely to be among the last alternatives to be included in retirement plans, rather than the first.

The standards for valuation, custody, and regulatory compliance are simply more stringent for crypto than for other alternative structures. Private equity and private credit are already present in pension funds, university endowments, and sovereign wealth portfolios globally. They may be unfamiliar to most 401(k) participants but are well-known to the institutions that would manage them. This familiarity provides a significant advantage when a fiduciary committee must formulate a defensible rationale for inclusion.

Private markets consist of loans or ownership stakes in companies that do not trade on public exchanges. A private credit fund lends capital directly to businesses that cannot or choose not to access public bond markets. A private equity fund acquires ownership stakes in companies, often prior to those companies going public.

These strategies have yielded strong long-term returns for large institutional investors, which serves as a compelling argument in their favor. The less comfortable argument, which supporters tend to mention infrequently, is that the 401(k) market represents an extraordinary distribution opportunity for an industry that has spent decades primarily catering to institutions.

Critics are quite vocal regarding the associated risks. Alternative investments typically involve complex fee structures that combine management fees, performance fees, and administrative costs in ways that are genuinely challenging for non-specialists to decipher. For a 401(k) participant in their forties with a balance of $150,000, the disparity between incurring 0.05% annually in a low-cost index fund and paying 1.5% or more in an alternatives structure is substantial. Compounded over twenty years, that difference can erode tens of thousands of dollars in retirement income. Every dollar spent on fees is a dollar that ceases to compound.

Valuation introduces a second layer of complexity. Standard 401(k) options are priced daily. Participants can rebalance, modify allocations, and take distributions with minimal friction because every holding has a clear, current market price.

Private assets do not operate in this manner. Their valuations are typically updated quarterly, based on appraisals and models rather than real-time market transactions. In a fund that involves participants buying in and out at different times, outdated valuations can create fairness issues that are difficult to resolve.

The structure can function, but only through specially designed fund wrappers intended to manage valuation and liquidity simultaneously, and those wrappers tend to introduce both cost and complexity.

Liquidity is where the stakes become high for average savers. Private assets are often contractually challenging to sell on short notice, and during periods of significant market stress, liquidity constraints can result in delays or outright restrictions on accessing one’s own funds.

During the 2022 rate shock, some large private fund structures experienced heightened redemption pressure that tested their liquidity management. Fortunately, it did not escalate into a full-blown crisis, but it provided a glimpse of what occurs when conditions worsen, and participants seek their funds back on a schedule that the fund cannot accommodate.

The real obstacle has nothing to do with regulation

Even among proponents of the proposal, the expectation is that adoption will be gradual and cautious. A financial services policy analyst at TD Cowen noted in a research report that it could take several years before the rule has any substantial impact, as fiduciaries are unlikely to act until courts have validated that the safe harbor truly holds.

Large employers are not keen to be early adopters of a legal standard that is still being established, and the funds where the majority of retirement capital resides (target-date default funds) alter their underlying strategies through lengthy evaluation cycles designed to resist disruption.

The most feasible approach is small optional allocations available to a limited group of participants, extended fiduciary review periods, and slow, incremental additions.

For crypto, the practical route to significant 401(k) inclusion likely involves regulated fund structures like Bitcoin ETFs rather than direct asset exposure, and a sustained period of price stability and regulatory clarity that the asset class has yet to consistently demonstrate. This does not imply it will not occur, but the timeline that fiduciaries will actually accept will likely be longer than the crypto industry anticipates.

If your plan ever announces new alternative investment options, the pertinent questions to ask are straightforward and specific: What percentage of your account can be allocated, and is there a cap? What are the total fees, encompassing every layer of the structure, not just the headline figure? And how does liquidity function when the market, particularly the crypto market, is not cooperating?

The rule currently being formulated will determine whether those questions receive honest answers. The individuals most urgently interested in seeing alternatives introduced into 401(k) plans are not your typical retirement savers.

They are asset managers who have spent years analyzing ten trillion dollars in retirement capital and awaiting a regulation that allows them to present their case. The primary aim of what the Department of Labor is drafting is to ensure that these two sets of interests remain properly aligned. Observe closely whether they do.

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