Fixed Income Portfolio ModelFree Financial Model Download
Model a fixed income portfolio with duration management, credit exposure, and yield curve strategy. No ignoring reinvestment risk or the extension risk that lengthens duration in falling rate environments.
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About this model
A fixed income portfolio model projects the total return on a $50–500 million bond portfolio managed for institutional clients. Holdings are modeled by tranche (government, investment-grade corporate, high-yield corporate, MBS), with coupon income, maturity schedules, credit losses (defaults applied as a percentage of opening values by tranche), and trading activity. The model tracks weighted average duration (interest rate sensitivity) and spread duration (credit sensitivity), allowing the manager to simulate the portfolio's performance across yield curve scenarios: parallel shift, twist, steepening.
Portfolio yield is straightforward (coupon income divided by AUM), but total return includes both income and capital gains/losses from price appreciation or depreciation as rates and spreads move. Credit losses (default rate times loss-given-default for each tranche) are modeled separately from market price moves. The model validates that distributions to investors do not exceed net investment income, and tracks the expense ratio (management fees, custody, admin, technology, audit) to ensure it stays within institutional norms (0.15–0.50% of AUM).
Critical features include separate modeling of premium/discount amortization (a held-to-maturity bond trading at a premium converges to par, generating a drag on return relative to coupon), rebalancing mechanics, and the interaction of reinvestment rates with market yields. This template is suitable for institutional asset managers, pension funds, and insurance companies managing fixed income mandates.
Recolor to your brand.
Formatted to IB standards.
Named theme colors repaint the whole workbook in one click, on top of an investment-banking structure with blue inputs, black formulas, and green cross-sheet links.
- Brand-ready
- Institutional grade
- Fully auditable
What's included
- Bond-level data: issuer, coupon, maturity, credit rating, duration, and yield
- Portfolio-level metrics: weighted average duration, spread duration, and credit duration
- Yield curve positioning: bullet, barbell, and ladder strategies
- Credit spread exposure by sector and rating
- Scenario and stress testing: parallel shift, twist, and steepening
Duration and convexity analysis
Measure portfolio sensitivity to yield changes and convexity effects to understand the range of bond price outcomes across rate scenarios.
Credit spread and sector concentration
Track credit spread exposure by issuer, sector, and rating to manage concentration risk within mandate guidelines.
Yield curve strategy and positioning
Model bullet, barbell, and ladder structures against yield curve scenarios to optimize income and capital return trade-offs.
Frequently asked
What is a fixed income portfolio model?+
A model that tracks bond holdings, calculates duration and credit exposure at the portfolio level, and stress-tests returns across yield curve scenarios.
What is bond duration?+
Duration measures the average time to receive bond cash flows weighted by present value. It approximates the percentage price change for a 1% yield change.
What is a credit spread?+
The yield difference between a bond and a risk-free benchmark such as a Treasury, compensating investors for credit and liquidity risk.
What is convexity?+
A measure of how bond duration changes as yields move. Positive convexity means price declines decelerate as yields rise, limiting downside in rising rate environments.
Who uses fixed income portfolio models?+
Bond managers, fixed income analysts, institutional investors, and asset managers use them for portfolio construction, reporting, and rate strategy decisions.
Alex Tapio
Founder of Finamodel • Professional Financial Modeller • Ex-Deloitte
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