What is the yield curve?

The yield curve is a line chart that plots the interest rates of US Treasury securities across different maturities, typically from 1-month bills to 30-year bonds. It is one of the most closely watched indicators in finance because its shape reflects collective expectations about future interest rates, economic growth, and inflation.

A "normal" yield curve slopes upward: longer-term bonds pay higher yields than shorter-term ones. This makes intuitive sense because investors demand extra compensation for tying up their money for longer periods and for bearing greater uncertainty about inflation and credit conditions. An upward-sloping curve generally signals healthy economic expectations and normal monetary policy.

When the curve "inverts," meaning short-term rates exceed long-term rates, it has historically been one of the most reliable recession predictors. The most commonly tracked spreads are the 10-year minus 2-year (10Y-2Y) and the 10-year minus 3-month (10Y-3M). An inversion signals that the market expects the Fed will need to cut rates in the future due to economic weakness, pulling long-term yields below the current short-term policy rate.

The yield curve also contains information about inflation expectations and the term premium. The term premium is the extra yield investors require for holding longer-duration bonds instead of rolling over shorter-term securities. When uncertainty about inflation or fiscal policy rises, the term premium expands and the curve steepens. When recession fears dominate, the term premium compresses or turns negative.

For investors, the yield curve has direct portfolio implications. Curve steepening tends to benefit banks (which borrow short and lend long), while inversion compresses bank margins. Long-duration assets like growth stocks and crypto are sensitive to real yields embedded in the curve. Monitoring the curve's shape provides a real-time read on where the economy sits in the business cycle.