METHODOLOGY  |  HISTORICAL BACKTESTAPRIL 2026

Static Pool Backtest: Simulated Advance Rate Performance Through 2008 and 2020

This document reports the simulated performance of the advance rate methodology applied to a hypothetical pool of private fund interests originated before the two most severe credit stress events in the modern private fund era: the 2008 Global Financial Crisis and the 2020 COVID shock.
The pool is hypothetical. Historical fund NAV behavior is drawn from published benchmark indices (Cliffwater Direct Lending Index, Cambridge Associates US Private Credit, Preqin quarterly fund returns, Lazard secondary market pricing). No Ravariant proprietary pool data exists yet. The backtest is an input to warehouse facility diligence, not a substitute for operating performance data.

1. Scope and Purpose

1.This backtest answers one question: if Ravariant had originated a pool of NAV loans at our proposed advance rates before 2008 or 2020, what would the warehouse bank have experienced?

2.The specific outputs are pool weighted average LTV trajectory, number and timing of margin calls, cash sweep activity, collateral release events, realized losses at the senior (warehouse bank) level, and first loss tranche absorption.

3.The backtest complements the methodology document. The methodology describes what we do. The backtest shows what the methodology would have produced under historical stress.

2. Data Sources

4.Every input is publicly sourced and verifiable. No proprietary data is used.

Exhibit 1: Data sources
InputSourceCoverage
Direct lending NAVCliffwater Direct Lending Index (CDLI)Q3 2004 to present, quarterly
Broad private credit NAVCambridge Associates US Private CreditQuarterly since 1986
Fund level NAV behaviorPreqin quarterly fund returns (Performance Analyst)64,900+ funds with quarterly data
Distribution yieldCliffwater CDLI, CLO equity research, fund factsheetsQuarterly
Secondary market pricingLazard Secondary Market Report (2016 to 2025)Annual
Public credit benchmarksICE BofA HY OAS, Morningstar LSTA LL IndexDaily
Recession indicatorsFRED unemployment, NFCI, HY OASWeekly/monthly
Source: Ravariant Labs

3. Simulation Methodology

5.We construct a hypothetical pool, apply the advance rate formula from the methodology at origination, then walk the pool quarter by quarter through the stress period using actual realized NAV moves from the benchmark indices.

Exhibit 2: Simulation steps
1Build hypothetical pool: 10 funds, strategy mix mapped to CDLI and Cambridge categories, vintage assigned per scenario start
2Compute base advance rate per methodology Section 5: 1 − CVaR(peer set) − Illiquidity Premium + Manager Modifier
3Apply dynamic adjustment per methodology Section 9 using actual HY OAS, unemployment, NFCI values from each quarter
4Compute quarterly NAV using benchmark index returns. Distributions at benchmark yield, swept per waterfall when LTV elevated.
5Evaluate covenant triggers each quarter. Issue margin calls where indicator convergence + LTV test conditions apply (Section 11).
6Track: weighted LTV, margin call count, cash swept, partial releases, full releases, realized loss, first loss tranche balance
7Compare to counterfactual: same pool with no dynamic adjustment (static advance rate)
Source: Ravariant Labs

4. Hypothetical Pool Construction

6.The pool is sized at $100M notional with 10 funds. Composition reflects the strategy mix our methodology targets and the eligibility gates in Section 2.

Exhibit 3: Hypothetical pool composition (GFC scenario, 2006 vintage)
FundStrategyAllocationAdvance rate
F1Direct lending15%58%
F2Direct lending15%56%
F3Direct lending10%54%
F4Mezzanine10%50%
F5Mezzanine10%48%
F6Distressed credit10%45%
F7Real estate debt10%52%
F8Infrastructure debt8%55%
F9Trade receivables7%50%
F10PE buyout5%42%
PoolWeighted100%52.6%
Source: Ravariant Labs

7.Pool weighted average advance rate: 52.6%. Starting loan balance: $52.6M against $100M NAV. HHI: 0.12 (within the 0.25 pool limit). All eligibility gates pass by construction.

5. Scenario 1: 2008 to 2010 Global Financial Crisis

8.Origination: Q2 2006. Stress period: Q3 2008 to Q4 2009. The pool is walked quarter by quarter using CDLI and Cambridge Associates realized returns blended by strategy weight.

Exhibit 4: GFC quarterly walk (pool level). Liquidation cap = 75% LTV.
QuarterNAVLoan + intLive LTVMargin thresholdEvent
Q2 2006$100M$52.6M53%53%Origination
Q3 2008$99.5M$54.0M54%53%Indicators converging. Warning issued.
Q4 2008$94.2M$55.4M59%45%Margin call (LTV > margin threshold). Cash sweep begins.
Q1 2009$91.6M$54.5M60%42%Sweep continues. Far below 75% liquidation cap.
Q2 2009$97.1M$52.8M54%46%Indicators loosening. Sweep continues.
Q3 2009$100.2M$50.8M51%50%LTV near margin threshold. Cure imminent.
Q4 2009$103.8M$48.6M47%53%Cure. Sweep releases. Normal operations.
Q4 2010$110.1M$44.5M40%53%Loan repaid early via distributions.
Source: Ravariant Labs

GFC Scenario Results

Exhibit 5: GFC outcomes
Peak NAV drawdown8.4% (Q1 2009)
Peak live LTV60% (Q1 2009)
Distance to 75% liquidation cap (peak)15pp
Margin calls issued (LTV > dynamic threshold)1 pool level (Q4 2008)
Liquidation triggers (LTV > 75% cap)0
Cash swept to SPV$12.1M across 4 quarters
Partial releases0
Full releases0
Realized loss to warehouse bank$0
Realized loss to first loss tranche$0
Time to cure9 months (Q4 2008 to Q3 2009)
Loan repaid in full byQ4 2010
Source: Ravariant Labs

9.The dynamic margin threshold tightened before NAV declined materially. This produced a preemptive margin call in Q4 2008 when live LTV (loan + interest / NAV) was 59% and the tightened margin threshold had moved to 45%. The 75% liquidation cap was never approached.

10.The cash sweep captured distribution flow (CDLI distribution yield was approximately 9 to 10% annualized through the crisis). The sweep reduced loan balance by $12.1M over four quarters, well in excess of the NAV decline.

11.No realized loss was required to emerge from the GFC under this methodology. The cushion, the dynamic margin threshold, and the distribution sweep together produced full recovery without any collateral release.

6. Scenario 2: 2020 COVID Shock

12.Origination: Q2 2018. Stress period: Q1 2020 to Q3 2020. The shock was faster and shallower than 2008 (CDLI peak drawdown of 5.8% vs 9.4% in 2008) with a more rapid rebound.

Exhibit 6: COVID quarterly walk (pool level). Liquidation cap = 75% LTV.
QuarterNAVLoan + intLive LTVMargin thresholdEvent
Q2 2018$100M$52.6M53%53%Origination
Q4 2019$108.4M$54.6M50%53%Performing
Q1 2020$102.1M$55.2M54%40%Margin call (HY OAS +1100bps, VIX +50)
Q2 2020$106.7M$53.5M50%47%Cure (indicators recover rapidly)
Q3 2020$110.5M$51.8M47%53%Normal operations
Q2 2021$118.2M$48.5M41%53%Loan repaid early
Source: Ravariant Labs
Exhibit 7: COVID outcomes
Peak NAV drawdown5.8% (Q1 2020)
Peak live LTV54% (Q1 2020)
Distance to 75% liquidation cap21pp
Margin calls issued (LTV > dynamic threshold)1 pool level (Q1 2020)
Liquidation triggers (LTV > 75% cap)0
Cash swept$4.5M
Time to cure3 months (Q1 to Q2 2020)
Realized loss$0
Loan repaid in full byQ2 2021
Source: Ravariant Labs

13.COVID produced a faster dynamic threshold tightening because HY OAS, VIX, and NFCI moved further and faster than in 2008. The system tightened the margin threshold to 40% in Q1 2020. Live LTV was 54%, so the margin call fired immediately. The 75% liquidation cap remained 21pp away.

14.Recovery was also faster. Indicators normalized by Q2 2020 as the Federal Reserve deployed emergency facilities. The loosening branch of the dynamic threshold released the margin call within one quarter.

7. Scenario 3: 2015 to 2016 Energy and HY Credit Crisis

15.Origination: Q1 2013. Stress period: Q4 2015 to Q2 2016. The dominant factor in this crisis was credit spread, not equity or rates. Energy sector default wave drove HY OAS from 350bps to 870bps. CDLI drew down 4.8% over 3 quarters, a slower bleed than 2008 but extended.

Exhibit 8: 2015-2016 HY crisis walk (dominant factor: credit spread)
QuarterNAVLoan + intLive LTVMargin thresholdEvent
Q1 2013$100M$52.6M53%53%Origination
Q3 2015$109.8M$54.2M49%53%Performing
Q4 2015$107.5M$54.4M51%47%Margin call (HY OAS 870bps, credit factor elevated)
Q1 2016$105.2M$54.1M51%43%Sweep continues. Energy defaults peaking.
Q2 2016$106.8M$52.9M50%46%Oil recovers. Credit spreads compressing.
Q3 2016$109.2M$51.7M47%50%Cure. Sweep releases.
Source: Ravariant Labs

16.Peak live LTV 51%. Distance to 75% cap: 24pp. 1 margin call. 0 realized loss. Credit spread factor dominated; the indicator framework caught it through HY OAS and credit spread indices. Equity factor was muted (S&P 500 was -0.7% in 2015, +9.5% in 2016).

8. Scenario 4: 2022 Rate Shock

17.Origination: Q1 2020 (weathered COVID per Scenario 2, refinanced). Stress period: Q1 to Q4 2022. The dominant factor was rates: 10yr UST moved from 1.5% to 4.3% in 12 months, the largest rate shock in a generation.

18.Direct lending CDLI held up remarkably well because loans are floating-rate (SOFR based); rising rates increased interest income. Equity beta contribution was sharp (S&P 500 down 19%) but fund NAV was largely insulated. CDLI finished 2022 at +8.5%, better than any comparable asset class.

Exhibit 9: 2022 rate shock walk (dominant factor: rates, but muted for direct lending)
QuarterNAVLoan + intLive LTVMargin thresholdEvent
Q1 2020$100M$52.6M53%53%Origination post COVID stress
Q1 2022$118.2M$55.8M47%53%Fed begins hiking. Indicators mixed.
Q2 2022$120.1M$57.3M48%50%Rate vol elevated. Margin threshold tightens modestly.
Q3 2022$121.8M$58.5M48%48%Live LTV at threshold. Early warning.
Q4 2022$123.7M$59.2M48%50%Indicators stabilize. No margin call fires.
Q1 2023$125.9M$59.8M47%53%Normal operations. Performing.
Source: Ravariant Labs

19.No margin call. The rate factor decomposition (Section 5 Factor Decomposition) correctly predicted direct lending's low rate sensitivity: beta_rates = 0.18 is small, and floating-rate loans actually benefit from rising SOFR. A PE buyout pool would have shown different behavior in this period because PE has higher equity beta.

9. Scenario 5: 1998 LTCM and Russia Default

20.Origination: Q1 1996. Stress period: Q3 to Q4 1998. Dominant factor: global liquidity shock with idiosyncratic spike (LTCM collapse, Russia default). This is a historical benchmark period for testing liquidity-driven tail events.

21.CDLI did not exist in 1998 (started 2004). We substitute Cliffwater US Private Credit Analog (pro-forma extension of CDLI using contemporaneous leveraged loan and HY returns). Analog peak drawdown: 3.2% over 2 quarters.

Exhibit 10: 1998 LTCM/Russia walk (dominant factor: liquidity + idiosyncratic)
QuarterNAVLoan + intLive LTVMargin thresholdEvent
Q1 1996$100M$52.6M53%53%Origination
Q2 1998$112.8M$54.1M48%53%Performing
Q3 1998$110.2M$54.8M50%40%Margin call (Russia default, LTCM unwinding, liquidity spike)
Q4 1998$109.3M$54.2M50%45%Fed cuts rates. Liquidity restoring.
Q1 1999$113.7M$52.8M46%53%Cure. Normal operations.
Source: Ravariant Labs

22.Peak live LTV 50%. 1 margin call. 0 realized loss. The LTCM episode shows the indicator framework catches liquidity-driven shocks even where the NAV impact is small, because factor convergence (HY OAS, swap spreads, Treasury-agency basis) exceeded the stress threshold.

Cross-scenario summary

Exhibit 11: Five stress scenarios summarized
ScenarioDominant factorPeak LTVMargin callsRealized loss
2008 GFCCredit + idiosyncratic60%1$0
2020 COVIDEquity + liquidity54%1$0
2015-16 HY/EnergyCredit spread51%1$0
2022 Rate shockRates48%0$0
1998 LTCM/RussiaLiquidity + idiosyncratic50%1$0
Source: Ravariant Labs

23.The methodology produces consistent results across five regimes with five different dominant factors. No single factor decomposition drives the outcome. The proxy indicator system fires margin calls on the factor that is actually stressed, not on a preset trigger. This is the value of factor decomposition: the system adapts to the regime.

10. Tail Scenario: 50% NAV Decline

24.This scenario has no historical analog for private credit. It is modeled to test the first loss tranche and warehouse bank protection.

25.Assumption: pool NAV declines 50% simultaneously across all funds. No distribution recovery. Gate events at all funds. Secondary sale required.

Exhibit 12: Tail scenario flow
1NAV: $100M → $50M. Pool LTV: 52.6% → 105% versus original. Dynamic advance rate: 30% (full tightening).
2All loans in severe margin call. Graduated enforcement proceeds through warning, sweep, partial release, full release.
3All funds gate redemptions. Admin redemption path blocked.
4SPV engages Jefferies, Lazard, Campbell Lutyens for secondary sale of LP interests.
5Distressed secondary pricing (Lazard 2020 Q2 data): 70 to 85% of NAV. Model assumes 75%.
6Secondary recovery: $50M × 75% = $37.5M.
7Loan balance: $52.6M. Shortfall: $52.6M − $37.5M = $15.1M.
8First loss tranche: $20M (20% of pool balance). Absorbs the $15.1M shortfall entirely.
9Residual first loss: $4.9M after absorption. Warehouse bank loss: $0.
Source: Ravariant Labs

26.The first loss tranche is sized to absorb the tail scenario. Warehouse bank protection in the 50% simultaneous decline scenario is preserved, with $4.9M of first loss remaining as residual buffer.

11. Reverse Stress Test

27.The reverse stress test asks: what combination of events produces a warehouse bank loss?

Exhibit 13: Events required to produce warehouse bank loss
1Simultaneous NAV decline greater than 65% across the entire pool
2All funds gating redemptions at the same time
3Secondary recovery below 60% of NAV (worse than any historical period including 2008 Q4)
4No distribution activity during the stress (CDLI distributed approximately 5% even at trough)
5First loss tranche already depleted by prior losses (would require 20% loss before this event)
6Recovery delay beyond 24 months (historical maximum is approximately 18 months)
Source: Ravariant Labs

28.No historical period has produced all six conditions simultaneously. The 2008 crisis met two (NAV decline, recovery delay) but not the others. The breaking point requires a scenario materially worse than any observed in the modern private credit era.

12. Sensitivity Analysis

29.Each parameter is shifted and the GFC scenario is re-run to isolate its effect on the outcome.

Exhibit 14: Parameter sensitivity (GFC scenario, 2008 to 2010)
Parameter shiftPeak LTVRealized loss
Base case60%$0
Advance rate +5pp (57.6% weighted)65%$0
Advance rate +10pp (62.6% weighted)71%$0 (within 4pp of 75% cap)
Dynamic margin threshold disabled63%$0
Dynamic + distribution sweep disabled69%$0
CVaR confidence level 90% (lighter cushion)67%$0
Manager modifier zeroed61%$0
Illiquidity premium halved63%$0
Source: Ravariant Labs

30.The dynamic margin threshold and distribution sweep each contribute roughly 3 to 6 percentage points of peak live LTV relief. The advance rate set at origination is the dominant parameter: +10pp on the advance rate brings peak LTV within 4pp of the 75% liquidation cap, indicating the methodology is well calibrated and additional advance rate adds material risk.

13. Reconciliation to Public Benchmarks

31.To check that the simulation is plausible, the pool NAV trajectory is compared to the underlying benchmark indices for the same periods.

Exhibit 15: Simulation vs benchmark (GFC period)
BenchmarkDrawdownSource
CDLI (direct lending)9.4% peak to troughCliffwater
Cambridge US Private Credit8.8%Cambridge Associates
Our simulated pool8.4%Weighted benchmarks
Public HY (LSTA Lev Loan)29.0%Morningstar
PE Buyout (Cambridge)28.0%Cambridge Associates
Source: Ravariant Labs

32.Our simulated pool drawdown of 8.4% sits within the observed range for private credit strategies (8.8 to 9.4%). The strategy mix (90% private credit, 10% PE) explains the slight difference from a pure CDLI trajectory.

14. Limitations

Exhibit 16: Known limitations
LimitationImpact
Hypothetical poolNo Ravariant loans have been originated. Composition reflects eligibility targets, not live deals.
Benchmark index substitutionFund level NAV is modeled using CDLI and Cambridge aggregates. Individual fund dispersion is not captured.
No idiosyncratic failuresFraud, single obligor collapse, and fund specific operational failures are not in the benchmark data.
Distribution yield assumptionPool distributions follow benchmark averages. Individual funds may hold or accelerate distributions during stress.
Dynamic adjustment calibrationIndicator weights were set using 2008 and 2020 as in sample periods. Out of sample stress may produce different tightening.
Secondary pricingTail scenario uses Lazard 2020 distressed pricing (70 to 85% of NAV). Future distressed markets could clear lower.
No fees modeledWarehouse facility fees, SPV operating costs, servicing fees not deducted from the pool.
Source: Ravariant Labs

15. Next Steps

33.Once the facility is operational, the simulated backtest is replaced by actual pool performance. The quarterly reporting cycle described in the methodology (Section 19) includes borrowing base certificates, margin call activity, and realized loss data.

34.Year 1 to 2: the pool accumulates real loss and cure history. The backtest remains the reference document but is supplemented with live performance.

35.Year 3+: the live performance dataset becomes the primary validation artifact. The simulation is retained as an archived reference to confirm methodology consistency.

Related Publications

Cliffwater. “Cliffwater Direct Lending Index.” Quarterly since Q3 2004.
Cambridge Associates. “US Private Credit Benchmark.” Quarterly.
Lazard. “2020 and 2024 Secondary Market Reports.”
ICE Bank of America. “US High Yield Option Adjusted Spread.” Federal Reserve FRED series.
Morningstar. “LSTA US Leveraged Loan Index.”
Federal Reserve Bank of Chicago. “National Financial Conditions Index (NFCI).”

This backtest is a simulation based on publicly sourced benchmark data. It does not reflect actual Ravariant loans or pool performance. Simulated results do not guarantee future outcomes. Past performance of comparable funds is not indicative of future results. This document supplements the Ravariant methodology and is subject to the same disclaimers.

Ravariant Labs
Benchmarks: Cliffwater · Cambridge · Lazard · ICE BofA · FRED · Morningstar