How does the 'riding the yield curve' strategy work, and when does it fail?

Riding the yield curve (also called 'rolling down the yield curve') is one of the most intuitive active fixed income strategies, but the conditions for it to work are specific and testable on the CFA exam.

The Core Idea

If the yield curve is upward-sloping and you believe it will remain unchanged, you buy a bond with a longer maturity than your investment horizon. As time passes, the bond 'rolls down' the curve to a lower yield, generating a capital gain beyond the coupon income.

Mechanics with Numbers: Ridgemont Securities Account (fictional)

Assume the current yield curve:

Your investment horizon is 2 years. You have two choices:

Strategy A (Buy and hold 2-year): Purchase a 2-year zero-coupon bond at 3.50%. Return over 2 years = 3.50% annually.

Strategy B (Ride the curve): Purchase a 5-year zero-coupon bond at 4.30%. After 2 years, it becomes a 3-year bond. If the curve hasn't moved, it will be priced at the 3-year yield of 3.90%.

Price today (5-year at 4.30%): 100 / (1.043)^5 = 81.01

Price in 2 years (3-year at 3.90%): 100 / (1.039)^3 = 89.14

Holding period return = (89.14 - 81.01) / 81.01 = 10.04% over 2 years = 4.90% annualized

Extra return from riding = 4.90% - 3.50% = 1.40% per year

Critical Assumption: Unchanged Yield Curve

This strategy assumes the yield curve maintains its current shape. This is NOT the same as expecting rates to stay constant -- it specifically means the yield at each maturity point stays the same.

When Does Riding the Curve Fail?

1. Yield curve flattens or inverts: If 3-year yields rise to 4.50% instead of staying at 3.90%, the capital gain disappears and may turn into a loss.

1. Parallel upward shift: If the entire curve shifts up by 100 bps, the 3-year yield becomes 4.90%, and your bond loses value.

1. The yield curve is flat: No roll-down benefit exists because yields don't decrease as maturity shortens.

1. Volatile rate environment: Even if the curve ends up unchanged, interim volatility creates mark-to-market risk and potential margin calls.

Relationship to Expectations Hypothesis

If the pure expectations hypothesis holds, forward rates are unbiased predictors of future spot rates, meaning the yield curve already prices in expected rate changes. In that world, riding the curve earns zero excess return on average. The strategy only adds value if there's a term premium embedded in longer maturities that isn't fully offset by rate increases.

Exam Tip: CFA questions typically give you the current yield curve, an investment horizon, and ask you to compare buy-and-hold versus riding the curve. Always state the key assumption: the yield curve remains unchanged.

Explore active fixed income strategies in our CFA Level II course.