What is a bond ladder strategy, and how does it help manage interest rate risk and reinvestment risk?

Bond laddering is one of the most elegant and practical fixed income strategies, and it elegantly manages two opposing risks at the same time.

What a Bond Ladder Is:

You buy bonds with staggered maturities so that bonds mature at regular intervals. As each bond matures, you reinvest the proceeds into a new long-maturity bond at the 'top' of the ladder.

Example: A 5-Year Ladder

Investor Samira allocates $500,000 equally across 5 maturity buckets:

When Rung 1 matures in one year, Samira buys a new 5-year bond. Now her ladder is 2-3-4-5-year bonds. Each year, the process repeats.

How It Manages Dual Risks:

Interest Rate Risk (Prices Fall When Rates Rise):

• Only 1/5 of the portfolio matures each year
• If rates rise, the shorter bonds are barely affected (low duration)
• The maturing bond is reinvested at the new higher rates
• Net effect: limited price damage, improving income

Reinvestment Risk (Income Falls When Rates Drop):

• Only 1/5 of the portfolio needs reinvesting each year
• The remaining 4/5 still earn the original higher coupons
• Price appreciation on longer bonds partially offsets lower reinvestment rates
• Net effect: gradual income decline, cushioned by capital gains

Advantages Over Alternatives:

1. vs. Bullet portfolio (all bonds same maturity): Ladder reduces concentration risk at one maturity point
2. vs. Barbell portfolio (short + long, nothing in between): Ladder provides more consistent cash flows and smoother roll-down return
3. vs. Active management: No need to forecast interest rates — the ladder automatically adapts

Practical Considerations:

• Wider ladders (1-10 years) capture more of the yield curve but have higher duration
• Narrow ladders (1-5 years) have less rate risk but lower average yield
• Corporate bond ladders add credit risk management to the equation
• Minimum bond sizes ($5K-$25K per bond) affect how granular the ladder can be

Exam Tip: Know that laddering is a passive strategy that addresses both interest rate risk and reinvestment risk without requiring rate forecasts. Compare it to bullet and barbell strategies in terms of risk characteristics.

Explore fixed income strategies in our CFA Level I course.