Credit Portfolio CDO ModelFree Financial Model Download
Structure credit default swap portfolios into tranches with stress-tested waterfall payouts. Model correlated defaults across the portfolio, calculate expected loss by tranche, and price spreads for senior, mezzanine, and equity positions.
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About this model
This credit portfolio CDO (Collateralised Debt Obligation) model structures a $500M diversified corporate loan portfolio into senior, mezzanine, and equity tranches, calculates interest cash flow waterfalls, and projects returns for each tranche under base and stress scenarios. It includes default assumptions (1.5–3% annual CDR), recovery rates (60–75% for senior loans), and reinvestment mechanics during the ramp-up period. The model generates interest income from the collateral pool (weighted average coupon 5.5–7.0%), pays management fees, senior-to-equity interest coupons, and equity residual distributions via a priority waterfall. Overcollateralisation (OC) and interest coverage (IC) test triggers divert excess cash to note paydown if the portfolio deteriorates.
The model includes a portfolio schedule showing performing par, defaults, recoveries, reinvestment, and closing par; a tranche schedule showing note balances, interest expense per tranche, and principal paydowns; and a waterfall section implementing the priority cascade: trustee fees → senior interest → OC/IC tests → mezzanine tranches (A, B, C in order) → equity residual. Returns sheets calculate equity IRR, MOIC, cumulative distributions, and DPI/RVPI metrics. Output includes covenant compliance flags, detailed loss analysis, and equity cash flow sensitivity to default rate and recovery rate.
This model is used by CLO managers building and monitoring credit portfolios; rating agencies evaluating portfolio credit quality and tranche sizing; and equity investors assessing expected returns and downside risk. It addresses the complex priority of payments and covenant mechanics that make CDOs fundamentally different from linear loan models.
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- Brand-ready
- Institutional grade
- Fully auditable
What's included
- Credit exposures by counterparty and tenor
- Correlation and copula assumptions for default scenarios
- Tranching structure: senior, mezzanine, and equity
- Attachment and detachment points by tranche
- Loss waterfall and yield enhancement by tranche
Correlated default scenarios at scale
Run thousands of correlated default scenarios and calculate tranche loss distributions and expected shortfall across the portfolio.
Rating transition and downgrade modeling
Apply rating transition matrices to model probabilistic downgrades and their impact on default probability and expected loss by tranche.
Spread pricing and tranche valuation
Calculate OAS spreads and expected returns by tranche given the simulated loss distribution, supporting secondary market trading and deal pricing.
Frequently asked
What is a CDO?+
A CDO (Collateralized Debt Obligation) pools credit exposures and issues tranched notes with different risk and return profiles, where senior tranches absorb losses last.
What is an attachment point?+
The attachment point is the portfolio loss level at which a tranche begins to absorb losses. For example, a mezzanine tranche might attach at 5 percent and detach at 10 percent.
What correlation assumptions should I use?+
Base correlations on realized values during stress periods. Use 0.3 to 0.5 for investment-grade portfolios and higher values for high-yield or concentrated sectors.
How do I calculate expected loss by tranche?+
Run Monte Carlo simulations, sort outcomes by total portfolio loss magnitude, and calculate the mean loss that falls within each tranche band.
Who uses CDO models?+
Structured finance teams, credit traders, risk managers, and underwriters use them for CDO issuance, secondary market valuation, and portfolio risk monitoring.
Alex Tapio
Founder of Finamodel • Professional Financial Modeller • Ex-Deloitte
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