2s10s and 3m10s Curve

Think of it this way

It is the shape of the road ahead. It does not tell you how much fuel you have left; it tells you whether what lies ahead is uphill or downhill.

What is 2s10s and 3m10s Curve?

It is a subtraction: the yield on 10-year Treasury debt minus the yield on the same debt at a short maturity, expressed in basis points. If it reads +50, lending to the Treasury for ten years pays half a point more per year than lending short, which is normal because the long maturity carries more risk. If it reads −50, it pays half a point LESS, and the curve is then said to be INVERTED. The chart does that subtraction in two ways depending on which short maturity it compares against: 2s10s uses the 2-year note and 3m10s the 3-month bill.

How to read 2s10s and 3m10s Curve

Above zero the curve is normal; below zero it is inverted. There are TWO moments to watch, and they should not be confused. The FIRST is when the line crosses downward into negative territory: it is a warning that the market sees cooling ahead, but it is a very early warning and the curve can stay there for years without anything happening. The SECOND is when it rises again and crosses zero upward, which is called DISINVERSION: historically that moment has come much closer to the real deterioration, because for it to happen the market has to be pricing in rate cuts, and those are only priced in when something is breaking. In short: inversion warns that something may happen; disinversion, that it is already happening. Lag: none, and it is worth knowing why, because two very different speeds coexist here. The number on this chart is a PRICE, and a price forms on the same day: as soon as the market changes its mind about the Fed, the 2-year note reflects it that afternoon. What does take time is the consequence, credit drying up: the bank first tightens its requirements and only later do the loans granted fall, and that is measured in QUARTERS, not weeks. That is why shifting it forward 15 or 30 days is useless: it is too much for a price that is already set and far too little for a credit cycle. In the data, no lag improves the relationship with risk assets, and the sign even flips depending on whether you look at the level of the curve or its change.

What 2s10s and 3m10s Curve means for the market

It is not a measure of liquidity but of the cycle: the same net liquidity figure means different things in an expansion than in a contraction. With an inverted curve there is a reading trap worth avoiding. Inverted means the market takes it for granted that the Fed will CUT rates, and that tends to be celebrated because low rates suit stocks. The missing question is WHY it would cut them: the Fed does not cut when everything is going well; it cuts when something is breaking. Pricing in cuts is, at bottom, pricing in problems. That is why stocks have not risen when the cuts began: by the time they arrived, the damage was already done. And while the inversion lasts there is a direct effect: if a three-month bill pays more than a ten-year note, nobody has a reason to lock up their money for a decade, so it stays in short-term paper and money market funds. That is what swelled the reverse repo between 2022 and 2024.

Where the money flows

A bank lives off the difference between two prices: what it pays YOU for your deposit, which is short-term money, and what it charges WHOEVER takes out a mortgage or a loan, which is long-term money. Treasury rates are the benchmark for both. NORMAL CURVE: it pays you 2% on your deposit and charges 5% on a ten-year mortgage; it keeps three points and wants to lend as much as it can. INVERTED CURVE: the Fed has raised rates, the bank has to pay you 5% so you do not take your money elsewhere, and that mortgage only yields 4.5%. Every new loan loses money, so it stops lending. That is where the curve leaves the bond market and reaches Main Street.

What to watch in 2s10s and 3m10s Curve

In 36 years the 2s10s has inverted for more than two months only three times. Those of 2000 and 2006 ended in recession, but 13 and 16 months later: too late to serve as a warning. The 2022 inversion was the deepest and longest in the series, −108 basis points and 783 days, and nothing followed. With three cases and one miss, this places you in the cycle but does not put a date on anything. Always look at both lines: in 2019 the 3m10s gave a warning and the 2s10s barely moved. When they agree the signal is more credible, and what gives the most information is still a rapid disinversion.

An economic cycle indicator, not a liquidity one. Background context.