Khan Capital | October 2025
Key Takeaways
- Semi-liquid funds have grown from $126 billion to $349 billion in four years, with projections of $4 trillion by 2030: Deloitte analysis identifies 825 structures in the market, a 15.5% CAGR since 2010, representing the fastest-growing segment of asset management.
- The BREIT precedent demonstrates the model’s fragility: Blackstone’s $125 billion flagship required 16 months and $14.3 billion in outflows to resolve a redemption crisis even with a $4 billion anchor investment and the industry’s strongest balance sheet behind it.
- Market concentration amplifies systemic risk: The top five sponsors control 83% of fundraising in non-traded BDCs, meaning a crisis of confidence at one or two firms could cascade across the entire semi-liquid market.
- Regulatory frameworks are untested: The SEC flagged liquidity and valuation concerns with the Apollo-State Street PRIV ETF on its launch day, and the European ELTIF 2.0 regime has yet to face a genuine stress scenario.
- The opening of DC retirement plans to alternatives raises the stakes dramatically: A potential $625 billion allocation from the $12.5 trillion defined-contribution market would dwarf current semi-liquid AUM, introducing millions of unsophisticated investors to products with structural liquidity limitations.
The private markets industry has found its holy grail: a way to sell illiquid assets to liquid investors. Over the past five years, the alternative investment industry has engineered a new generation of fund structures, semi-liquid vehicles that promise quarterly or monthly redemptions on portfolios of private credit, private equity, and real estate that cannot themselves be sold on any exchange. The pitch is compelling: institutional-quality returns, professional management, and the flexibility to exit when you choose. The reality is more complex, and the stakes are enormous.
Global assets in semi-liquid private market funds have surged from approximately $126 billion in 2020 to $349 billion by the end of 2024, with projections from Deloitte suggesting the market will exceed $4 trillion by 2030. There are now 825 semi-liquid fund structures in the market as of January 2025, an all-time high, growing at a 15.5% compound annual rate since 2010. The growth is not merely impressive; it represents a fundamental transformation in who owns private markets and on what terms.
The question nobody is asking loudly enough is what happens when these structures face their first genuine stress test: not a single fund’s redemption problem, but a market-wide event that sends investors rushing for exit windows that were never designed to accommodate a crowd.
The Architecture of Semi-Liquidity
Understanding the risk requires understanding the product. Semi-liquid funds come in several regulatory wrappers, each with distinct characteristics, but all share a common design principle: they hold illiquid private assets while offering investors periodic opportunities to redeem.
| Structure | Redemption Terms | Regulation | Key Players | Est. AUM ($B) |
|---|---|---|---|---|
| Non-traded BDC | Quarterly, typically 5% cap | SEC-registered (1940 Act) | Blue Owl, Apollo, Blackstone | 167 |
| Interval Fund | Quarterly, 5-25% of NAV | SEC-registered (1940 Act) | Cliffwater, PIMCO, Ares | 126 |
| Non-traded REIT | Monthly/Quarterly, 2-5% cap | SEC-registered | Blackstone (BREIT), Starwood | ~80 |
| ELTIF 2.0 (Europe) | Varies; semi-liquid or evergreen | EU ELTIF Regulation | BlackRock, Amundi, Partners Group | ~20 (EUR) |
| Tender-Offer Fund | Quarterly tender, manager discretion | SEC-registered | Various | ~30 |
The common thread is the liquidity mismatch: the assets inside these funds, whether private loans, unlisted equity stakes, or commercial real estate, cannot be sold in days or weeks. The redemption mechanisms, typically capped at 5% of net asset value per quarter, exist to manage this mismatch. They are safety valves, not guarantees. When redemption requests exceed the cap, investors receive a pro-rata share of the available liquidity, and the remainder is deferred.
The 5% quarterly cap means that if every investor simultaneously wanted out, it would take a minimum of five years to fully liquidate the fund, assuming the manager could sell the underlying assets at all. In practice, forced selling of illiquid assets at distressed prices would erode the NAV for remaining investors, creating a last-mover disadvantage that incentivises early redemption: the structural mechanics of a slow-motion bank run.
The BREIT Precedent: A Warning Unheeded
The industry has already had a dress rehearsal. In November 2022, Blackstone Real Estate Income Trust (BREIT), a $125 billion non-traded REIT and the largest semi-liquid fund in existence, began gating redemptions after requests exceeded its monthly and quarterly limits. What followed was 16 months of sustained redemption pressure that tested the structural integrity of the semi-liquid model.
The numbers tell a stark story. Between November 2022 and December 2023, investors withdrew $14.3 billion from BREIT. Redemption requests peaked at over $5 billion in January 2023, forcing Blackstone to cap withdrawals at 2% of NAV per month and 5% per quarter. The fund shrank from $69 billion to approximately $55 billion. Only a $4 billion investment from the University of California, locked in for six years, provided the confidence boost necessary to stem the bleeding.
Blackstone eventually resolved the crisis. By March 2024, BREIT was fulfilling 100% of redemption requests for the first time since late 2022. The firm’s defenders pointed to the episode as proof the system works: the gates functioned as designed, no investor was locked out permanently, and the underlying real estate portfolio retained its value.
This is the benign interpretation. The more concerning reading is that Blackstone, with its $1 trillion balance sheet, its unmatched brand credibility, and a $4 billion anchor investment from one of the world’s largest institutional allocators, barely managed to navigate a redemption crisis that was confined to a single asset class (real estate) during a period of broadly stable credit markets. The question is what happens when the next crisis hits multiple asset classes simultaneously, across dozens of managers, many of whom lack Blackstone’s resources.
The Democratisation Stampede
The industry’s answer to the BREIT episode has not been caution. It has been acceleration. The push to distribute private market products to retail and high-net-worth investors has intensified dramatically through 2025, driven by three converging forces.
The Wealth Channel Gold Rush
The $30 trillion US wealth management market represents the single largest untapped pool of capital for alternative asset managers. Through the end of Q3 2025, non-traded BDCs alone have raised $167 billion, with interval funds adding a further $126 billion. Fundraising over the trailing twelve months reached $43.5 billion, and the concentration is remarkable: the top five sponsors, Blackstone, Blue Owl, Apollo, Ares, and HPS, account for more than 83% of total inflows. Since 2021, 43 non-traded perpetual BDCs have captured $141 billion in capital, surpassing the $111 billion raised by their non-perpetual predecessors.
The economics are irresistible for the managers. Permanent or semi-permanent capital generates stable management fees regardless of market conditions, a far more attractive business model than the traditional private equity fundraise-invest-exit cycle. Blackstone, Apollo, and Blue Owl have each invested billions building distribution teams, technology platforms, and relationships with wirehouses and registered investment advisors to access this capital.
Europe’s ELTIF 2.0 Revolution
Across the Atlantic, Europe has created its own regulatory framework for democratising private markets. The ELTIF 2.0 regulation, which took full effect in January 2024, removed minimum investment thresholds, broadened eligible asset classes, and permitted semi-liquid and evergreen structures. The response has been explosive: 55 new ELTIFs launched in 2024, more than double the previous annual record. By the end of 2024, the ELTIF market reached approximately EUR 20.5 billion, with EUR 5.7 billion in net growth during the year alone.
The momentum has continued into 2025, with Morningstar counting 100 evergreen ELTIFs with approximately EUR 10 billion in assets by late 2025. Industry forecasters project at least 80 new ELTIF launches in 2025, with total AUM potentially reaching EUR 65 to 70 billion by 2027. BlackRock, Amundi, and Partners Group have emerged as the leading sponsors, targeting the continent’s substantial pool of retail savings that has historically been confined to deposits, bonds, and listed equities.
The Final Frontier: Retirement Accounts
The most consequential policy development may be the Trump administration’s executive order opening the $12.5 trillion US defined-contribution retirement market to alternative investments, with implementation targeted for August 2026. If enacted as proposed, this would allow 401(k) plans to include allocations to private equity, private credit, and real estate through semi-liquid fund structures.
The scale is staggering. Even a modest 5% allocation across the DC market would represent $625 billion of new capital flowing into alternative investments: more than the entire current semi-liquid fund market. The alternative asset managers are positioning aggressively. Apollo and State Street launched the PRIV ETF in February 2025, a first-of-its-kind vehicle combining public and private credit in a daily-liquid ETF wrapper. Blackstone has partnered with Vanguard and Wellington to develop hybrid products designed for retirement portfolios. The convergence of public and private markets is no longer theoretical; it is being engineered in real time.
What the Market Is Misunderstanding
The consensus view treats the growth of semi-liquid funds as an unalloyed positive: a democratisation of access that will deliver superior returns to a broader investor base while providing alternative managers with a permanent, scalable source of capital. This narrative ignores several structural risks that become more dangerous as the market grows.
The Liquidity Illusion
The fundamental promise of semi-liquid funds, that investors can access illiquid asset class returns while retaining the ability to exit, depends entirely on redemptions remaining orderly. The 5% quarterly cap functions as a safety valve only when a small minority of investors seek to redeem in any given period. When redemptions become correlated, as they did with BREIT, the cap transforms from a liquidity management tool into a psychological accelerant: investors who might otherwise stay put submit redemption requests pre-emptively, fearing that the limited quarterly allocation will be consumed by others.
This is not a hypothetical risk. It is a demonstrated one. The BREIT episode showed that even a well-managed fund backed by the industry’s most credible sponsor can face 16 months of sustained gating. The semi-liquid model’s growth has expanded the surface area for this dynamic exponentially. With $349 billion in assets across 825 structures, a market-wide stress event could simultaneously trigger redemption cascades across dozens of funds, overwhelming the managers’ collective ability to generate liquidity.
The Valuation Opacity
Semi-liquid funds report net asset values based on internal models, periodic third-party appraisals, and management judgment. Unlike a public bond or equity portfolio, where every holding has a transparent market price, the NAVs of private market funds are inherently lagged and subjective. During the BREIT crisis, critics argued that the fund’s reported NAV significantly overstated the market value of its real estate holdings, a claim Blackstone disputed but could not definitively refute given the absence of real-time transaction data.
This opacity creates an information asymmetry between fund managers and investors. When markets are calm, investors accept the reported NAV and collect their dividends. When confidence erodes, the absence of a transparent price discovery mechanism means investors have no independent basis for assessing whether the fund is worth 100 cents on the dollar or 80. The rational response in conditions of uncertainty is to redeem first and ask questions later.
The Concentration Risk
The semi-liquid fund market is extraordinarily concentrated. The top five sponsors control more than 83% of recent fundraising, and the top managers hold over 70% of assets in non-traded perpetual vehicles. This concentration means that a reputational crisis at a single major sponsor, or a high-profile gating event, could trigger contagion across the entire market. Investors who have never previously engaged with private markets may not distinguish between a problem at one fund and a structural failure of the product category.
The Regulatory Gap
Semi-liquid funds exist in a regulatory grey zone. They are registered with the SEC and subject to investor protection requirements, but the regulatory framework was designed for liquid, daily-priced investment vehicles. The SEC’s concerns about the Apollo-State Street PRIV ETF, which the agency flagged for issues around liquidity, valuation, and naming conventions on launch day, illustrate the tension between product innovation and regulatory infrastructure. The European ELTIF 2.0 framework is more purpose-built but remains untested by genuine market stress.
Investor Implications
The semi-liquid fund revolution is not inherently misguided. Broadening access to private markets can genuinely enhance portfolio diversification and long-term returns for investors who understand what they own. But the current trajectory, in which the industry is racing to package illiquid assets in liquid wrappers and distribute them to the widest possible investor base, carries risks that the market is systematically underpricing.
Alternative Asset Managers: The publicly traded alternative managers, Blackstone (BX), Apollo (APO), Blue Owl (OWL), Ares (ARES), and KKR, are the primary beneficiaries of the semi-liquid trend through higher fee-earning AUM. But their equity valuations increasingly embed assumptions about perpetual growth in the wealth channel. Any event that shakes confidence in the semi-liquid model would reprice these stocks materially, as the BREIT crisis demonstrated when Blackstone shares fell over 30% between their 2021 peak and their 2022 lows.
Fixed Income: The growth of private credit semi-liquid funds has absorbed a significant share of middle-market lending that previously flowed through the broadly syndicated loan market. If a stress event forces semi-liquid funds to curtail new lending or sell assets, the resulting supply and demand dynamics could create dislocations in leveraged loans and high-yield bonds, widening credit spreads.
Real Estate: Non-traded REITs remain the largest category of semi-liquid fund by AUM history, and the lessons of BREIT are directly applicable. Investors should scrutinise the gap between reported NAVs and observable market indicators (such as publicly traded REIT discounts) as a leading indicator of stress in non-traded vehicles.
Retirement Policy: The prospect of opening DC plans to alternatives deserves careful scrutiny. Unlike accredited investors or institutional allocators, 401(k) participants have limited financial sophistication, long time horizons they may not fully appreciate, and a behavioural tendency to panic-sell during market downturns. Introducing semi-liquid private market funds into retirement accounts without robust liquidity safeguards and investor education risks creating the next generation of “unsuitable investment” litigation.
Conclusion
The rise of semi-liquid funds represents the most significant structural shift in asset management since the invention of the exchange-traded fund. The industry has built a $349 billion market in five years and is projecting a tenfold expansion to $4 trillion by the end of the decade. The ambition is breathtaking. The regulatory framework that underpins it, the investor education that should accompany it, and the stress-testing that should precede it have not kept pace.
The BREIT episode of 2022 to 2023 was a warning. A single fund, backed by the industry’s most resourceful sponsor, required 16 months and a $4 billion anchor investment to resolve a redemption crisis in a stable credit environment. The semi-liquid fund market of 2025 is orders of magnitude larger, more diverse, and more distributed across investors who may not fully understand the liquidity terms they have accepted.
None of this means the semi-liquid model will fail. The underlying thesis, that patient capital invested in private markets can generate superior risk-adjusted returns, remains sound. The concern is not with the destination but with the vehicle: a product architecture that promises flexibility it can only deliver in fair weather, distributed to an investor base that has never experienced the storm. The $4 trillion gamble is not whether private markets deliver returns. It is whether the industry can honour the liquidity promises it has made to millions of investors who have never owned an illiquid asset before.
Sources: Deloitte: Semi-Liquid Funds, A $4 Trillion Opportunity · Tiempo Capital: Semi-Liquid Funds Current Status · Caproasia: BREIT $14.3 Billion Withdrawal · Commercial Observer: BREIT Fulfils 100% Redemptions · PwC: ELTIF 2.0 Evolution · Funds Europe: Evergreen and ELTIF Markets · AltsWire: Non-Traded BDC Q3 2025 · WealthManagement: Non-Traded BDC Fundraising · CNBC: Apollo-State Street PRIV ETF · Morningstar: SEC Concerns on PRIV ETF · BlackRock: ELTIF 2.0 New Era · MSCI: Ascendance of Evergreen Funds
Related Reading: The structural risks inherent in semi-liquid funds became painfully visible in early 2026 when The Private Credit Crackup saw Blue Owl, Apollo, and Blackstone face billions in redemption requests, vindicating many of the concerns raised here. The broader private credit market had already shown signs of strain as explored in Private Credit Faces Its First Real Test. The interest rate environment that fuelled private credit’s growth and the semi-liquid revolution is examined in 10-Year Treasury Hits 5%: Bond Vigilantes Return, while the Silicon Valley Bank Collapse offers a parallel case study in what happens when liquidity mismatches are stress-tested by a sudden loss of confidence. The growth of private credit from niche to systemic force, the foundation upon which the semi-liquid revolution was built, is examined in The Rise of Private Credit: From Niche to $1.7 Trillion. The PE distribution drought that is driving demand for liquidity solutions across private markets, including secondaries and continuation vehicles, is analysed in The Private Equity Secondaries Boom. See also Democratising Private Markets: The Retail Revolution and Its Risks. The specific mechanics of how AI is repricing software collateral are examined in Private Credit and AI Disruption: When Collateral Loses Value Overnight. The implications for the publicly traded managers are analysed in KKR, Apollo, and the Alternative Asset Manager Model Under Pressure.
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