Circles of Risk: Why the Credit Risk Banks Paid to Shed Has Not Left the System
Banks buy record credit protection from the private credit investors they finance; supervisors from the BIS to the Bank of England say they cannot fully see the loop, exposing bank capital planning, private credit portfolios and corporate lending through 2028.
The 2026 consensus is dispersion: banks originate, private markets absorb the risk, and synthetic risk transfers (SRTs) are the instrument, with July trade coverage recording "a broader, deeper and increasingly institutional global SRT market" (Structured Credit Investor, 31/07/2026). This year’s supervisory literature carries a quieter finding: credit risk sold out of the banking system partly circles back: banks lend to and finance the investors selling them protection, and no supervisor holds the data to size the loop. Boards should treat "the risk has left" as an assumption to test, not a fact.
Signal Identification
A hidden-linkage inflection, not a new instrument: the SRT market is a decade old. New this cycle: primary evidence documents the circularity and the measurement gap while issuance sets records. A regulatory pivot in the making: the blind spot is named; the rules to close it have not landed.
What's Changing
The BIS is plain: "Issuance has increased fivefold since 2016, providing protection to loan portfolios of almost €800 billion as of end-2024" (BIS Quarterly Review, 16/03/2026). In the euro area, the outstanding stock of synthetically transferred corporate loans quintupled from around €60 billion at the end of 2018 to more than €300 billion by mid-2024; the IMF estimates more than €1 trillion of assets synthetically transferred globally between 2016 and 2024 (SUERF, 09/07/2026).
The loop is documented. ECB credit-registry research finds banks are 57 to 66% more likely to sell an SRT to a non-bank investor with which they also have a credit relationship, cut borrower risk-rating updates by 12 to 28% after transfer, and redeploy the freed capital, leaving themselves effectively less capitalised than before (SUERF, 09/07/2026). The BIS calls this "circles of risk": credit risk moved to funds "can return indirectly to the banking sector as a result of other banks financing the purchases of those investors" (BIS Quarterly Review, 16/03/2026).
Supervisors concede they cannot measure it. The FSB puts private credit at a "total size estimated to be between $1.5 trillion and $2 trillion" and highlights "the challenges in collecting and analysing data for effective monitoring" (Financial Stability Board, 06/05/2026). The Bank of England reports the PRA "is testing thoroughly any proposed structures that appear to be more complex or less robust" (Bank of England, 07/07/2026). SRT reference pools are dominated by "corporate borrowers that traditional rating agencies, such as S&P, Moody’s, and Fitch, don’t cover and that CDS markets don’t price" (Credit Benchmark, 20/05/2026).
The loop in numbers
Source basis: SUERF Policy Brief No. 1505 (09/07/2026) and BIS Quarterly Review (16/03/2026).
Disruption Pathway
Three stages. Through 2027, issuance climbs as output-floor arithmetic beats raising equity; the US market, growing at rates estimated around 400% in 2024, converges on European practice (SUERF, 09/07/2026). The first prolonged credit downturn then tests rollover: banks that built lending capacity on expiring protection must replace it just as a concentrated investor base pulls back, when the BIS expects SRTs to amplify stress rather than absorb it. The close-out stage is regulatory: capital-impact disclosure, cross-border data sharing on investor funding and leverage, and SRTs inside system-wide stress tests (BIS Quarterly Review, 16/03/2026).
Stresses concentrate in banks whose capital relief runs beyond the sample average of around 43 basis points of CET1, in funds financing SRT positions with repo against the notes, and in the cross-border chain in which European and Japanese banks buy protection from US funds "while concurrently providing financing to some of those entities" (BIS Quarterly Review, 16/03/2026). Two adaptations follow: standardised supervisory disclosure, with the PRA already engaging bank by bank (Bank of England, 07/07/2026); and market pricing that separates funded, unlevered protection from levered structures.
Why This Matters Now
For bank boards, CROs and treasurers, the revision is to capital planning: protection that must roll is closer to funding than to capital, and flowback belongs in the plan alongside the redeployed-capital assumption. Risk functions should name the funds behind their SRTs and net them against the firm’s own lending, prime-brokerage and repo exposures; the ECB finds banks lending to private credit investors, to the funds and to their portfolio companies at once (European Central Bank, 26/05/2026). And with the OECD-estimated share of private credit financing AI investment up from 9% in 2024 to 34% in 2025 (Bank of England, 07/07/2026), the loop increasingly carries the economy’s most valuation-sensitive credit.
Decision-action posture for this signal: Prepare — the loop is documented but not yet priced or regulated; map counterparty overlap now and commit further on the first disclosure mandate or failed rollover.
Counter-Argument
The strongest objection comes from the supervisors themselves: "SRT-related risks appear to be modest at present" (BIS Quarterly Review, 16/03/2026). Protection is overwhelmingly funded and collateralised, post-2008 rules are stricter, and the market held through recent turbulence. The ECB reports "euro area banks’ exposures to private credit worldwide total €62.5 billion, which is 0.2% of total assets", and its simulated severe shock leaves bank losses "not exceeding 1.3% of total equity" (European Central Bank, 26/05/2026).
The objection is strong on today’s stock, weak on trajectory and data. "Modest at present" is conditioned, in the same document, on information the authors call limited and fragmented; the behavioural erosion operates at any market size; and the fastest-growing segments (US issuance, repo-financed positions, cross-border chains) sit where visibility is worst. A loop can be small and still be mispriced as zero.
Implications
Taken together, the sources suggest durable change in where credit risk sits: origination is separating from risk-bearing, with banks ending up as financiers of their own hedge counterparties. This scan’s reading is that the 2026-2028 window decides whether the loop gets measured before it gets tested (BIS Quarterly Review, 16/03/2026). Scaled protection sellers and cleanly disclosed issuers gain. Banks reliant on SRTs for outsized capital relief, and investors holding levered SRT exposure booked as diversification, carry the loss side if rollover fails or disclosure reprices the market.
Early Indicators to Monitor
- The Basel Committee or FSB launches a standing SRT data collection covering investor funding and leverage.
- The PRA follows its July engagement language with a consultation on SRT financing exposures.
- ECB banking supervision publishes banks’ aggregate SRT-financing and fund-lending exposures.
- A major bank names SRT flowback or rollover risk in Pillar 3 disclosures.
- Full-year 2026 issuance sets another record while the repo-financed share of investor positions rises.
Disconfirming Signals
- Full-year 2026 issuance falls below 2024 levels as US capital recalibration weakens the arithmetic behind the trade.
- A supervisory data collection finds bank financing of SRT investors immaterial relative to protection outstanding.
- Follow-up research fails to replicate the reduced-monitoring and adverse-selection findings outside the euro area.
- A prolonged downturn passes with protection rolling normally and no bank forced to slow lending.
- SRT investor bases shift to unlevered, closed-end capital, cutting the repo and fund-financing links banks provide.
Strategic Questions
- Does your capital plan treat SRT protection as permanent relief, or as funding that can fail to roll in a downturn?
- Can your risk function name the funds behind your SRTs and net them against your own lending to those funds?
- Should protection bought from investors you finance be priced, and capitalised, as the weaker hedge?
- Which disclosure mandate or rollover event moves this signal from Prepare to Decide for your board?
Keywords
Synthetic risk transfer (SRT); significant risk transfer; capital relief trades; private credit; bank-NBFI interconnection; credit-linked notes; Basel output floor; flowback risk; credit risk recycling; bank capital planning
Bibliography
Source tiers: Tier 1, governments, regulators and intergovernmental bodies. Tier 2, think-tanks, academic institutes, major consultancies and quality data providers. Tier 3, quality journalism and specialist trade press. Tier 4, vendor, company and practitioner sources, used only as directional corroboration.
- Tier 1 Report on Vulnerabilities in Private Credit. Financial Stability Board (06/05/2026).
- Tier 1 Stress in global private credit markets and its implications for euro area financial stability. European Central Bank (26/05/2026).
- Tier 1 Financial Stability Report, July 2026. Bank of England (07/07/2026).
- Tier 1 The rise and risks of synthetic risk transfers, BIS Quarterly Review. Bank for International Settlements (16/03/2026).
- Tier 2 Synthetic, but how much risk transfer? SUERF Policy Brief No. 1505. SUERF (09/07/2026).
- Tier 3 SRT comes of age. Structured Credit Investor (31/07/2026).
- Tier 4 Significant Risk Transfer: Structures, Disclosure, and Borrower Benchmarking. Credit Benchmark (20/05/2026).