NAV Finance, ABL and Fund Finance: Market Trends, Structuring and Tensions in Private Credit in 2026

Altrium Financial Services, in collaboration with King & Spalding

The fund finance market has matured rapidly. What was once a niche toolset available to a select group of sophisticated sponsors is now a core component of how GPs structure their capital, manage liquidity, and optimise returns for investors. Yet with that maturity comes friction: between growth and discipline, between innovation and risk, between borrower-friendly terms and lender protections, and between an increasingly interdependent capital stack and the institutional infrastructure designed to manage it.

These were the themes at the centre of Altrium’s Private Credit Breakfast on Fund Finance & ABL, hosted at King & Spalding’s London offices in April 2026. The discussion brought together Christopher Hirschman (Investment Director, 17Capital), Lewis Glandfield (Director, Avardi Partners), Dan Marcus (Fund Finance and Securitisation Partner, King & Spalding), and Nathan Parker (Fund Finance Partner, King & Spalding). We are grateful to each of them for their time and candour.

Defining the Landscape: NAV Financing, ABL and GP Financing

The panel opened with a necessary taxonomy. NAV finance, in the context of this discussion, refers primarily to PE NAV: loans made to a fund vehicle secured against its private equity portfolio. ABL addresses the credit fund side of the market, where levered sleeves are structured to invest in portfolios of private credit assets. The vehicles of Direct Lenders and Credit Funds are here the borrowers, often structuring the financing as a securitisation. GP financing, encompassing management fee lending, carry-backed structures and seed investment facilities, represents a third and increasingly inventive category.

The European Fund Finance ABL market has now reached genuine maturity. Pricing starts in the high hundreds of basis points for portfolios consisting of senior debt stacks, capital is abundant, and consistent market norms are emerging.

Why NAV Financing Has Come to the Fore

NAV finance has existed since at least 2008, but its adoption has accelerated in the last two years. The primary driver is straightforward: 2020 and 2021 vintage funds were acquiring assets at high valuations, NAV has accumulated, and that value has not yet converted into distributions. Sponsors need tools to invest further into their portfolios, support add-on opportunities, and manage the gap between value creation and realisations.

Beyond portfolio management, NAV facilities enable sponsors to invest in essence 100% of a fund’s committed capital into assets rather than holding a buffer, while still retaining liquidity headroom. The blended management fee burden for LPs falls as a result, and net returns improve. Even at the 300 to 700 basis points range mentioned by our panel, the economics hold if the underlying investments are generating superior returns.

LP sentiment has also shifted considerably. Transparency has proven decisive in driving that shift. As one panellist observed, a vocal LP who opened by asking hard questions about a proposed NAV facility ended up asking for a piece of it once the sponsor explained the use of proceeds clearly and articulated the portfolio management rationale. What was once a product met with scepticism, particularly where facilities were used primarily for distributions, is now broadly accepted where the rationale is value creation. Recent LP consent processes from transactions discussed by our panel achieved approval thresholds above 66%, illustrating how far the market has moved.

Structural Complexity, Hybrid Facilities and the Push for Standardisation

The capital structures being assembled today are increasingly layered. Subscription lines, NAV facilities, ABLs, CFOs, secondary-backed leverage and rated feeder structures are all in active use, and the interaction between them demands careful documentation and lender coordination. The interdependency of the capital stack is no longer a theoretical concern: it is an operational reality that documentation teams, agents and lenders must navigate on every transaction.

On the PE NAV side, a meaningful trend toward standardisation is emerging. Lender and sponsor forms are developing, and market practice is consolidating, a positive development for liquidity, sell-downs, and the commoditisation of the product. On the ABL side, the structure is relatively established: an SPV holding assets, with share, intra-group debt, account and asset security. Innovation is arriving at the margins, particularly where fund interests sit alongside private credit assets or where a levered sleeve has not been built from inception.

The panel also revisited the long-standing question of hybrid facilities, those combining subscription lines and asset-backed tranches (whether NAV or ABL) within a single instrument. The honest verdict: hybrids remain the unfulfilled promise of fund finance. A decade ago they were “the unicorn of the industry,” discussed at every conference and rarely seen in practice. The reason is largely institutional. Separate bank teams with different credit metrics, internal counsel giving contradictory instructions, and documentation processes that ended up more expensive for sponsors rather than cheaper all conspired against execution. That is slowly changing. French banks and certain mid-market institutions have begun building integrated umbrella teams capable of spanning the full product range, and the panel expects this model to gain ground. But the structural logic of keeping a subscription line and a NAV facility in separate instruments, lent to different parts of the structure and by different lender groups, remains compelling for most transactions.

Risk, Concentration and the Valuation Question

The panel was clear-eyed about the current tensions in the private markets. Software concentration has created real concerns across PE and private credit portfolios. Redemption pressure on evergreen vehicles, particularly in the US, is testing the liquidity assumptions built into some structures, and the liquidity mismatch this creates is most acute for semi-liquid and retail evergreen funds. The European market, the panel noted, has materially less exposure to this specific stress, given its dominance of closed-ended institutional structures.

New entrants are arriving on both the lender and fund manager side, raising questions about underwriting rigour at the smaller end of the market. In response, the panel observed that underwriting processes have lengthened, and additional approval layers have been added across the board, “quite rightly” in the words of one panellist.

If Fund Finance facilities are exposed to stress, traditional mitigation tools need to work. On enforcement mechanics, the panel offered important perspective. PE NAV LTVs typically commence at 10 to 15%, with enforcement triggers only crystallising around 30 to 35% according to our panel. 17Capital’s internal stress-testing framework illustrates the discipline applied at the sharper end of the market: if NAV is increasing, EBITDA should be increasing alongside it.

On concentration risk specifically, the panel drew a sharp distinction between the US and European approaches to collateral management. In the US, certain lenders have exercised marking rights that effectively reduce facility capacity where software concentration becomes problematic, though the panel’s view was that press coverage of forced collateral swaps had been somewhat overblown. The European market operates differently: Value Adjustment Events, or Re-evaluation Events as some banks term them, require something objectively wrong in the underlying portfolio before any mark-down is triggered, and even then any collateral swap or repricing is a heavily negotiated process rather than a unilateral lender action. The panel noted that repricing attempts have occurred in a number of stressed transactions over the past three to six months, with mixed results, reflecting a cautious but real reassertion of lender discipline in select parts of the market.

Valuation challenge rights remain contested across both markets. In practice, the combination of tight timelines, diverse syndicates and sponsor resistance means these provisions are often more theoretical than operational. A lender seeking to exercise a challenge right that must be invoked within ten business days, across a diverse syndicate with no coordinating mechanism, is unlikely to succeed. Lenders are increasingly focused on getting the audit and reporting architecture right from the outset rather than relying on challenge mechanics alone.

The transparency point extends to the ABL market, where MFS in the UK and Tricolor in the US have brought double pledging risk into wider public view. Both involved alleged deliberate fraud by management at origination platforms handling high volumes of fast-rotating consumer and property collateral. The panel’s view was direct: there has been more talk about this than real concern about European fund finance ABL portfolios being affected by similar issues.

The structural distinction matters. In European fund finance ABL, the borrower is the direct lending vehicle of an established, institutional-grade private credit manager, with a diversified portfolio of senior secured corporate loans held in an SPV and, as one panellist put it, share security, account security and asset security all in place simultaneously. That is a fundamentally different proposition from a fast-growing origination platform pledging rotating receivables across multiple warehouse lines.

Vigilance nonetheless remains appropriate. Luxembourg has no security registration regime, and detection of competing claims relies on contractual representations, audit rights and forensic procedures. The lesson from these cases is not that fund finance ABL carries equivalent risk: it is that collateral verification and audit architecture must be built robustly from day one.

Outlook: Growth and Caution Are Not Mutually Exclusive

The panel closed on a cautiously constructive note. Capital deployment pressure remains real. Demand for NAV and ABL products continues to grow. The structural features of these facilities, including concentration limits, LTV ratchets, cash sweep mechanics and GP-led resolution processes, are working as intended.

The risk is not systemic failure. It is the gradual erosion of lender discipline under competitive pressure: margins compressing beyond what the risk warrants, structural protections being negotiated away, and valuation governance weakening at precisely the moment it matters most. The liquidity mismatch concerns concentrated in the US evergreen market serve as a reminder that structures which appear robust in stable conditions can be tested quickly when redemption pressure builds.

For market participants that maintain their underwriting standards, invest in stress-testing frameworks, operate at the mid to upper end of the manager quality spectrum, and build the technology and legal infrastructure to administer complex capital structures correctly, the outlook remains positive. The market is growing. The tensions are real. And the distance between the two will be determined, as it always is, by the quality of execution.

Clément Couloumy, Senior Director