Yield Spread and Inversion (Yield Curve)
The gap between long-maturity and short-maturity Treasury yields — long-term is usually higher, and when short-term rises above it (inversion), it is read as an early warning sign of recession.
Term spread = long-term Treasury yield (e.g., 10-year) − short-term Treasury yield (e.g., 2-year)
When the term spread is sufficiently positive (long > short), it is seen as a normal state in which expectations for economic expansion remain alive.
In plain terms
Normally, the longer you lend money out (long term), the more interest you receive. So it is normal for the 10-year Treasury yield to be higher than the 2-year.
But there are times when this flips and short-term yields rise above long-term ones. This is called an "inversion," and it is read as a signal carrying the market's worry that "the economy will worsen in the near future."
What it tells you
It compactly shows how the market views the economy and interest rates going forward. When the curve steepens, expectations for growth have risen; when it flattens or inverts, concerns about a slowdown have grown.
In particular, inversions have appeared ahead of several past recessions, making it one of the most closely watched macro signals.
Formula
Term spread = long-term Treasury yield (e.g., 10-year) − short-term Treasury yield (e.g., 2-year) When this value falls below 0 (short > long), it is called a "yield curve inversion."
What high or low means
When the term spread is sufficiently positive (long > short), it is seen as a normal state in which expectations for economic expansion remain alive.
When the spread turns negative and inverts, it is seen as a signal of slowdown or recession concerns, but the lag from inversion to an actual recession is long and it does not prove right every time.
An inversion does not mean "a recession is certain to come soon." It has often come first in the past, but there have also been cases where the recession arrived 1–2 years later or never came. It is not a timing tool.
The signal differs depending on which maturities are compared (10-year minus 2-year, 10-year minus 3-month, and so on).
As a macro signal, it does not apply directly to individual stocks. It is a reference indicator for reading the overall market environment.
In the U.S., there have been several occasions since the 1970s where a recession followed after the 10-year and 2-year Treasury yields inverted. That is how this inversion came to be the "recession warning signal" that markets and the media watch most closely.
That said, it has sometimes taken one to two years from the inversion until a recession actually arrived, and stocks have risen further in the meantime. It shows that a signal is just a signal, not a tool for pinpointing timing.
Metrics to read alongside
See it in real stocks
Search US stocks on Stocklore to see SEC-filing-based financial metrics alongside the sector benchmark.
This explanation is for information and reference only and is not a recommendation to buy or sell any security. Investment decisions and their consequences are your own.