The yield curve and inversions

The yield curve is one of the most powerful signals in macro. It is simply a plot of the interest rates (yields) on government bonds across different maturities — from short-term bills to long-term bonds.

The normal shape

Usually the curve slopes upward: longer-dated bonds pay more than short-dated ones, because lending money for longer carries more risk and ties it up longer. A healthy, upward-sloping curve signals a normally growing economy.

Inversion — the famous warning

Sometimes short-term yields rise above long-term yields and the curve inverts. This happens when the central bank has raised short-term rates aggressively to fight inflation, while long-term yields stay lower because investors expect slower growth — or a recession — ahead.

An inverted curve (often measured as the 2-year versus the 10-year Treasury yield) has preceded most US recessions. It is not a precise timer, but it is a signal markets take seriously: it says the market expects rates to fall in the future because the economy is heading for trouble.

How to read it as a trader

• Steepening curve (long rates rising relative to short) → expectations of stronger growth or higher inflation.
• Flattening curve (the gap shrinking) → the market sees the central bank tightening into a slowdown.
• Inversion → a recession warning; often a headwind for risk assets and eventually a signal that rate cuts — and a weaker currency — may come.

The curve is essentially the bond market's forecast of growth and policy. Reading it tells you what the smartest, largest market in the world expects next.