How does a carry trade work in fixed income, and how is it different from a yield pickup trade?

Question

AcadiFi · Accepted Answer

A fixed income carry trade profits from the difference between the yield earned on a longer-duration position and the cost of funding that position at shorter-term rates. Unlike a yield pickup trade (which moves across credit quality), a carry trade moves along the **yield curve** within the same credit tier.

**The Carry Trade Setup**

The investor borrows at the short end of the curve and invests at the long end, earning the term premium:

Carry = Yield on Long Position - Funding Cost (Short Rate)

**Worked Example — Sterling Bond Partners:**

The government yield curve is steep:

| Maturity | Yield |
|---|---|
| 3-month repo rate (funding) | 3.25% |
| 5-year Treasury | 4.60% |
| Carry (net) | **+1.35%** |

Sterling borrows $200 million at the 3-month repo rate and buys 5-year Treasuries. Annual carry = $200M x 1.35% = **$2.7 million**.

**Total Return = Carry + Roll-Down Return + Price Change from Yield Curve Shifts**

The carry is only one component. If the yield curve doesn't shift, the bond also benefits from **roll-down return** as it ages toward lower-yielding maturities (on a positively sloped curve):

| Component | Calculation | Annual Return |
|---|---|---|
| Carry | 4.60% - 3.25% | +1.35% |
| Roll-down (curve unchanged) | Price appreciation as 5Y rolls to 4Y | +0.45% |
| **Total (curve unchanged)** | | **+1.80%** |

**Carry vs. Yield Pickup — Key Differences**

| Feature | Carry Trade | Yield Pickup Trade |
|---|---|---|
| Risk source | Term premium (duration) | Credit premium (spread) |
| Instrument swap | Same credit, different maturity | Same maturity, different credit |
| Primary risk | Yield curve flattening or inversion | Credit spread widening |
| Leverage | Typically leveraged via repo | Usually unleveraged |

**When Carry Trades Fail**

1. **Curve flattening:** If the short rate rises or long rates fall, the funding cost increases and bond prices drop. A parallel upward shift is devastating — the long position loses more than carry provides.
2. **Curve inversion:** If the curve inverts, carry turns negative and the strategy bleeds money.
3. **Repo market stress:** Funding rates can spike during liquidity crises, eliminating carry overnight.
4. **Leverage amplification:** A 10:1 leveraged carry trade earning 1.35% carry suffers a 13.5% loss if spreads widen by just 30 bps on a 4.5-year duration.

**Breakeven Curve Shift:**

The yield on the 5-year can rise by at most:

Breakeven = Carry / Duration = 135 bps / 4.5 years = **30 bps per year**

If 5-year yields rise more than 30 bps (with funding unchanged), the trade loses money.

Explore carry and roll-down strategies in our CFA Level II fixed income course.

How does a carry trade work in fixed income, and how is it different from a yield pickup trade?

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