Funding Agreement-Backed Notes (FABNs) are capital markets instruments that allow life insurance companies to borrow from institutional money market funds, short-duration bond funds, and corporate cash managers — at investment-grade rates, with no collateral posted, and no regulatory capital charge under the current NAIC framework. They are, structurally, the insurance industry's version of commercial paper: short-term wholesale funding backing long-term illiquid assets.

Over the past three years, PE-owned life insurers have dramatically expanded their FABN programs. Athene alone grew its outstanding FABN book from approximately $34 billion to $64 billion in a single year — an 88% surge. The industry-wide total is estimated at $150–200 billion across the five major PE-insurance platforms. This funding has flowed directly into private credit, infrastructure debt, CLO tranches, and structured equity — assets that cannot be monetized quickly.

This memorandum documents the architecture of the FABN market, quantifies the maturity wall by issuer, identifies the three failure modes, traces the cascade transmission sequence from FABN stress to policyholder, and frames actionable positioning for analysts and investors who understand what is happening before it is priced.

A Funding Agreement-Backed Note is not a bond issued directly by the insurance company. It is structured as follows:

Under the current NAIC Risk-Based Capital framework, funding agreements are treated as general account liabilities — the same category as annuity reserves. There is no incremental capital charge for the wholesale, short-duration, non-sticky nature of the funding. A $10 billion FABN program is treated identically to $10 billion in 30-year deferred annuity reserves — despite the fact that the annuitant cannot call their contract for decades, while the FABN noteholder can simply not roll at maturity in 18 months. This regulatory gap is not accidental; it is a structural artifact of a capital framework built for traditional long-duration insurance liabilities, now being exploited by a fundamentally different business model.

The expansion of FABN programs is not incidental — it is a deliberate funding strategy. As PE-owned insurers aggressively grew their general account AUM to deploy more capital into affiliated alternative asset managers (generating management fees and carried interest), they needed a scalable, cheap, investment-grade funding source. FABNs filled that gap. The institutional demand was there: money market funds and short-duration mandates were seeking yield pickup over Treasuries in a high-rate environment, and FABN spreads of 30–80 bps over comparable Treasuries were attractive.

Note: Non-Athene figures are analyst estimates derived from public filings, NAIC statutory data, and rating agency commentary. Global Atlantic does not publicly disclose a consolidated FABN balance. F&G figures are partially disclosed in Blackstone quarterly supplements.

Based on Athene's disclosed issuance schedule and typical program parameters for the other platforms, the estimated maturity distribution across the ~$175B combined FABN book is:

Estimated. Athene's 2026–2027 tranche concentration derived from disclosed program issuance. Non-Athene platforms modeled on similar tenor distributions.

The maturity mismatch at the heart of the FABN problem is described consistently in regulatory commentary and analyst research as a structural vulnerability. What is described less often is its precise magnitude. The gap between FABN liability duration and alternative asset portfolio duration is not narrow — it is one of the largest duration mismatches in the US financial system, larger than anything observable in the banking sector and only loosely analogous to pre-crisis S&L balance sheets.

The total balance sheet duration gap (assets vs. all liabilities) appears manageable at the macro level — insurers actively duration-match their annuity reserve book. But the aggregate figure conceals the FABN-specific problem: FABNs are a sub-liability with a duration of ~2 years funding a portfolio of alternatives with effective durations of 4–40 years. The relevant duration gap is not total assets minus total liabilities — it is the duration of the assets that were acquired using FABN proceeds, minus the duration of the FABNs themselves.

This is why the benign scenario requires the Fed to cut rates: it is not simply that rate cuts make FABNs cheaper to issue. Rate cuts reduce the mark-to-market loss already embedded in the alternative asset portfolio — losses that have been accumulating since the 2022–2023 rate cycle and that will surface in any distressed liquidation scenario.

FABNs are held predominantly by four buyer categories. Each category has a different trigger for becoming a forced or reluctant seller, and understanding these triggers is essential to understanding how a FABN rollover crisis propagates.

Prime MMFs are the most credit-sensitive buyers in the FABN market. Under SEC Rule 2a-7, prime MMFs must hold only securities with minimal credit risk and must maintain 99.5% of assets in securities maturing within 397 days. They are major buyers of 6-month and 12-month FABN tranches. The constraint: if an insurer's credit rating falls below A-2/P-2 (short-term) or if portfolio managers perceive elevated tail risk, prime MMFs will not roll. They don't need to sell — they simply decline to participate in the next auction. For the insurer, non-participation from MMFs is equivalent to a funding withdrawal, since FABNs must be reissued to replace maturing notes.

Short-duration bond funds (iShares 1–3 Year Credit ETF, Vanguard Short-Term Corporate Bond ETF, and hundreds of separately managed accounts) are significant holders of 2–4 year FABN tranches. Unlike MMFs, they can hold FABNs to maturity and absorb mark-to-market volatility. However, they face retail redemption risk: if private credit stress becomes a headline narrative and retail investors flee short-duration credit ETFs, fund managers must sell holdings to meet redemptions — including FABNs, which may trade at a discount if IG spreads widen.

Large corporate treasuries (technology firms, industrials, healthcare systems) use FABNs as yield-enhanced cash equivalents. They are relatively sticky holders — their investment policy statements typically allow 30–90 day advance notice of changes. However, they are also the most likely to seek permission from their boards to reduce exposure if a major PE-insurer becomes a headline risk.

Long-duration institutional investors sometimes hold 5–7 year FABN tranches as a spread pickup over comparable government bonds. They are the stickiest holders but also the largest in individual position size. If a SWF with $3B in Athene Global Funding notes decides not to roll at maturity, it creates an immediate $3B gap that must be filled by other buyers or by asset sales.

Section V identifies prime money market funds as the most credit-sensitive component of FABN demand and references the March 2020 stress episode as the operative precedent. A critical update is required: the regulatory structure governing prime MMFs changed materially in October 2024, and the change makes a future FABN rollover crisis significantly worse in structure than the 2020 episode — not better.

The SEC's January 2024 amendments to Rule 2a-7 eliminated the discretionary redemption gates and fees that existed under the 2016 reform (which were widely criticized for accelerating outflows in 2020 because investors redeemed preemptively to avoid being gated). In their place, the SEC introduced mandatory liquidity fees: if a prime institutional MMF's daily net redemptions exceed 5% of the fund's net assets in a single day, the fund must impose a liquidity fee — equal to the cost of the liquidity it is consuming — on all redemptions that day. The fee is not discretionary. The fund board cannot waive it. It triggers automatically.

The mandatory liquidity fee creates a self-reinforcing exit dynamic that did not exist in 2020:

The five PE-owned insurer FABN programs (Athene Global Funding, Global Atlantic Funding, F&G Global Funding, AEL Funding, Fortitude Funding) collectively represent a significant share of prime MMF FABN holdings. If institutional prime MMFs hold an average of 8–12% of assets in PE-insurer FABN paper, and total prime institutional MMF assets are approximately $1.5 trillion, the aggregate PE-insurer FABN exposure in prime MMFs is an estimated $120–180 billion. This is not a tail position — it is a core allocation for many prime funds. A sector-wide re-pricing does not allow orderly rotation; it requires liquidation into an illiquid secondary market simultaneously across all funds.

The FABN maturity wall is not unprecedented in structure, even if its current scale is. Three historical episodes illuminate how short-duration wholesale funding of long-duration illiquid assets fails — and how quickly.

American International Group had issued guaranteed investment contracts and securities lending agreements backed by its general account assets. When AIG's credit rating was downgraded three notches in September 2008, counterparties immediately called collateral on derivative contracts, GIC holders requested redemptions, and securities lending borrowers returned collateral — simultaneously. AIG could not liquidate its mortgage-backed securities fast enough to meet the cascade of obligations. The Federal Reserve provided an $85 billion emergency credit facility within 48 hours of the downgrade. The key parallel: it was not AIG's long-duration insurance liabilities that caused the crisis. It was the short-duration, market-sensitive wholesale funding instruments that triggered the liquidity death spiral. FABNs are today's structural equivalent.

Conseco's insurance subsidiaries had used short-term funding facilities to acquire manufactured housing loan portfolios. When the credit performance of those loans deteriorated, the funding facilities did not renew. Conseco filed for bankruptcy in December 2002 — the third-largest bankruptcy in US history at the time. Policyholders at the insurance subsidiaries were backstopped by state guaranty associations, but creditors and equity holders were wiped out. The lesson: the legal separation between the insurance subsidiary and the holding company does not protect policyholders from asset deterioration caused by the holding company's funding strategy.

UK defined-benefit pension funds had used liability-driven investment (LDI) strategies — leveraged long-duration gilt positions — to match their long-duration liabilities. When Liz Truss's "mini-budget" caused gilt yields to spike 100+ bps in days, LDI funds faced margin calls they could not meet. They sold gilts to raise cash — which pushed gilt yields higher, triggering more margin calls. The Bank of England intervened with emergency gilt purchases. The structural parallel to FABN: a liquidity mismatch (leveraged positions that required rolling or liquidating faster than markets could absorb) created a self-reinforcing spiral that required central bank intervention to arrest.

The following sequence maps how a FABN rollover difficulty at one major PE-owned insurer propagates through the financial system to ultimately reach policyholders, pension funds, and the broader private credit market.

The PE-insurance business model is built on a flywheel: annuity premiums flow in → PE firm deploys them into affiliated credit products → the spread earned funds policyholder crediting rates → strong crediting rates attract more annuity buyers → premiums continue to flow in. This virtuous cycle also serves a mechanical function that is rarely made explicit: annuity inflows are doing double duty. They are not only the primary source of new investable capital — they are also passively offsetting FABN maturities by continuously replenishing the general account. When the flywheel reverses, both functions fail simultaneously.

Athene's annuity inflows have been running at approximately $30–40B per quarter in peak periods. If inflows fall to $5–10B per quarter in a stress scenario (a 75–80% reduction, consistent with advisor channel disruption and reduced FIA demand), the passive FABN maturity offset shrinks from $30B+ per quarter to $5–10B per quarter. Against a 2027 maturity wall of ~$70B, this means the insurer must actively refinance approximately $60–65B in new FABN paper in a single year — in a market where buyers are already cautious. In 2023 and 2024, when the flywheel was running at full speed and markets were benign, the same refinancing task required $64B in new issuance over twelve months. Doing it again in a stressed market, with a reduced inflow offset and institutional buyer hesitation, is a categorically different challenge.

FABNs do not exist in isolation. They interact with a second structural vulnerability — Bermuda reinsurance self-cession — in a way that amplifies both risks.

Athene has ceded approximately $192 billion of reserves to its own Bermuda-based reinsurance affiliate (Athene Life Re Ltd., based in Hamilton, Bermuda). This is 100% of the Bermuda affiliate's reserves — meaning every dollar of reinsurance "protection" comes from Athene's own captive, with no independent third-party risk transfer. The purpose of this structure is regulatory capital arbitrage: Bermuda's Solvency II-equivalent framework requires less capital against the same liabilities than the NAIC RBC framework, allowing Athene to free up US regulatory capital that can then support... more FABN issuance.

AG55 (Actuarial Guideline 55), the first NAIC standard requiring systematic reinsurance collectability testing, became effective in August 2025. It is the first meaningful regulatory intervention in the Bermuda cession structure. However, it does not prohibit captive reinsurance — it only requires that the reinsurance be demonstrably collectible. Whether $192B in self-ceded Bermuda reserves passes the AG55 collectability test under a stress scenario is one of the most consequential unresolved regulatory questions in insurance markets today.

In addition to FABNs, PE-owned insurers have dramatically expanded their use of Federal Home Loan Bank (FHLB) advances — collateralized borrowings from FHLB member banks, available to insurance company members at rates tied to SOFR. FHLB advances function as a secondary wholesale funding source, typically at shorter duration than FABNs (overnight to 1 year).

The interaction between FABNs and FHLB advances is critical to understanding liquidity architecture:

• In normal markets: Insurers use FHLB advances as a low-cost, flexible funding supplement to FABNs — borrowing short (overnight, 30-day) at near-SOFR rates and investing in longer-duration alternatives for a carry trade.
• In stressed markets: FHLB advances become the emergency liquidity facility — the insurer draws heavily on FHLB capacity to cover maturing FABNs it cannot roll. This is precisely what happened at several mid-sized banks in March 2023, when FHLB advance usage spiked to record levels as banks attempted to cover deposit outflows.
• FHLB capacity is finite and collateral-dependent: FHLB advances require eligible collateral (government securities, agency MBS, and qualifying whole loans). Private credit, CLO tranches, and infrastructure debt are NOT FHLB-eligible. As PE-owned insurers shift their portfolios toward alternatives, their FHLB borrowing capacity (as a percentage of total assets) actually declines — meaning the emergency backstop shrinks as the FABN book grows.

The NAIC Risk-Based Capital framework was designed in the 1990s for traditional insurance business models: long-duration liabilities (life insurance policies, annuities) funded by investment-grade bond portfolios. The framework has not been materially updated to account for:

The NAIC's Financial Analysis Working Group (FAWG) and its E Committee have flagged PE-owned insurer business models for enhanced review since 2022. The NAIC adopted a new "PE-owned insurer" regulatory framework in 2023 requiring enhanced pre-acquisition review, but this applies only to new acquisitions — it does not retroactively impose new requirements on existing platforms. The existing platforms — Athene, Global Atlantic, F&G, AEL, Fortitude Re — operate under the pre-2023 regulatory framework indefinitely.

The assumption embedded in most assessments of PE-owned insurer risk is that if a major platform faces distress, government intervention will materialize — as it did for AIG in 2008, as it did for prime MMFs in 2020, as it did for banks in 2023. This assumption is wrong in its specifics and dangerous in its confidence. Life insurance companies have no access to the Federal Reserve's discount window. They cannot borrow from the Fed. They cannot participate in emergency repo facilities. They have no equivalent of the FDIC guaranteeing their liabilities. What they have is a state guaranty association system that was designed for the failure of a single mid-size insurer — not for the simultaneous distress of five platforms holding a combined $1.5+ trillion in general account assets.

The Federal Reserve's authority to lend to non-bank entities is governed by Section 13(3) of the Federal Reserve Act, which permits emergency lending to "any individual, partnership, or corporation" in "unusual and exigent circumstances" — but only with the approval of the Treasury Secretary, only when the borrower is "unable to secure adequate credit accommodations from other banking institutions," and only against "satisfactory collateral." The 2010 Dodd-Frank Act added a further requirement: emergency lending programs must be "broad-based" (available to multiple entities) rather than targeted at a single institution. This means the Fed cannot do for Athene in 2027 what it did for AIG in 2008 — AIG received a single-institution emergency credit facility, which is explicitly prohibited under current law. Any Fed intervention in a PE-insurer FABN crisis would need to be structured as a broad-based facility (analogous to the 2020 MMLF or the 2023 Bank Term Funding Program), would require Treasury co-sign, and would face congressional scrutiny in a political environment that is significantly more hostile to financial sector bailouts than 2008 or 2020.

The actual backstop for annuity policyholders is the state insurance guaranty association system. Every state has a life and health guaranty association that provides coverage to policyholders of insolvent insurers domiciled in that state. The coverage limits and funding mechanisms vary by state, but the common structure is:

• Coverage limit: $250,000–$500,000 per policyholder per insurer in most states (Iowa, where Athene's operating subsidiary is domiciled, provides $250,000 in annuity coverage)
• Funding mechanism: Post-insolvency assessment — member insurers are assessed after a failure occurs, in proportion to their premium volume. There is no pre-funded reserve pool equivalent to the FDIC's Deposit Insurance Fund.
• Maximum annual assessment: Typically capped at 1–2% of annual premium volume for any member insurer — meaning that even if the entire industry is assessed at maximum capacity, the total annual payout capacity is a small fraction of what would be required for a major platform failure.

Following the 2008 financial crisis, the Financial Stability Oversight Council (FSOC) was empowered to designate non-bank financial institutions as Systemically Important Financial Institutions (SIFIs), subjecting them to enhanced prudential standards and Fed supervision. MetLife was designated in 2014 — and fought the designation in court, winning in 2016. Following MetLife's successful legal challenge, FSOC effectively stopped designating non-bank SIFIs. Athene, Global Atlantic, F&G, AEL, and Fortitude Re — collectively holding ~$1.5 trillion in assets — are not SIFI-designated. They are supervised only by state insurance regulators. The federal government has no standing regulatory relationship with these entities and no pre-existing emergency authority framework for their distress.

If a major PE-owned insurer faced FABN rollover failure, the realistic government response sequence would be:

1. State regulator places insurer under supervision — the state insurance commissioner (Iowa DOI for Athene) initiates an examination, issues a corrective order, or places the insurer into "rehabilitation" (the insurance equivalent of Chapter 11). This process can take 6–24 months from initiation to resolution.
2. FSOC convenes emergency session — designates the situation as a potential systemic risk, triggering enhanced monitoring but no direct intervention authority.
3. Congress debates emergency legislation — any meaningful federal backstop (analogous to TARP or an FDIC-style guaranty extension) would require new legislation. In the current political environment, passage would be uncertain and slow. Negotiations over the 2008 TARP took two weeks and initially failed a House vote.
4. Fed structures a broad-based facility — if Treasury concurs and circumstances meet the legal threshold, the Fed could establish an emergency FABN purchase facility. This would require legal review, facility design, and market communication — a minimum of 4–8 weeks from decision to operation.

The FABN maturity wall is a structural risk with a 24–36 month refinancing window. It does not require a single triggering event — it is the accumulation of refinancing pressure as the outstanding book rolls over. However, several catalysts could materially accelerate the timeline or increase severity:

The FABN maturity wall creates asymmetric opportunities across several asset classes. The timing is uncertain — this is a 2026–2028 structural risk, not a 2026-Q2 event — but positioning now captures the most convexity as the wall approaches.

The maturity wall is a structural risk — it does not guarantee a crisis. The following conditions, if sustained simultaneously, would allow PE-owned insurers to navigate the 2026–2028 refinancing window without systemic disruption:

• Private credit default rates remain below 3% through 2027, preserving alternative asset marks and insurer net spreads. This requires the current wave of PIK conversions and covenant amendments to stabilize — not a certainty in a high-rate, slow-growth environment.
• Fed cuts rates meaningfully (100–150 bps through 2026–2027), reducing FABN funding costs and re-steepening the yield curve. This improves net spreads even if alternative asset returns are moderate.
• Institutional FABN demand remains robust — prime MMFs and short-duration bond funds continue to absorb new issuance at spreads below 80 bps. This requires no headline credit event at any of the five platforms.
• AG55 collectability testing passes without recapture requirements at any major platform. If the first round of testing (H1 2026) is benign, it removes a near-term catalyst and may delay regulatory scrutiny by 12–18 months.
• Annuity sales remain strong, providing continued capital inflow to the general account. This offsets FABN maturities with new policyholder premium — reducing the net refinancing burden. Annuity demand has been strong in 2024–2025 in a high-rate environment; a rate decline could reduce the attractiveness of fixed annuities.

The following data sources provide the earliest available signal on FABN market conditions. Monitor in the order listed — earlier signals allow more time to establish positions before risk is priced.