What causes the yield curve to invert?

Question

AcadiFi · Accepted Answer

Yield curve inversion results from the interplay of Fed policy, inflation expectations, term premia...

Unlock with Scholar — $19/month

Get full access to all Q&A answers, practice question explanations, and progress tracking.

No credit card required for free trial

**Primary driver — Fed tightening.** When the Fed raises the front-end rate aggressively to fight inflation, short yields rise mechanically. If this tightening is expected to succeed, long-term inflation expectations fall and long yields decline or rise less. The wedge between front-end and long-end shrinks and can invert.

**Falling term premium.** Term premium — the extra yield investors demand for holding long duration — has fallen structurally since the 2000s due to (a) low and stable inflation expectations, (b) foreign CB demand for US duration (FX reserves, safe-haven flows), (c) QE programs absorbing duration from private hands, (d) regulatory demand from insurers and pensions needing long-duration assets. Low term premium means long yields stay depressed even when short yields rise.

**Global capital flows.** Foreign central banks and sovereign wealth funds buy long Treasuries for FX reserves or safe-haven purposes, depressing long yields. In particular, Japanese and European investors seeking yield above their domestic negative rates have pushed significant demand into US long Treasuries.

**Recession expectations.** As markets anticipate slower future growth, they expect future Fed cuts — pricing lower forward short rates, which by arbitrage lowers long spot yields. Self-fulfilling in some sense: expecting Fed to cut creates the inversion that signals Fed cuts.

**Technical and regulatory factors.** Basel III liquidity coverage ratio requires banks to hold HQLA including long Treasuries. Pension derisking increases duration demand. All these depress long yields independent of growth expectations.

What causes the yield curve to invert?

Master Level II with our CFA Course

Related Questions

Practice Questions