Yield Curve Dynamics Are Telling a Different Story Than Equities
The shape of the curve has changed three times in six months. Equities have noticed twice.
The 2s10s curve has steepened, flattened, and re-steepened in the span of six months. Through all three regimes the S&P 500 has drifted higher in a narrow channel. The divergence is not subtle. It also is not new — but the explanation that worked in 2024 no longer applies.
The bull-steepening tell
What the curve is signaling, in the simplest reading, is that the bond market expects either cuts or growth disappointment within the next six months. Bull steepening — when the front end rallies harder than the back — has historically preceded broad equity drawdowns by one to two quarters.
The Federal Reserve's own H.4.1 data, available at Fed.gov, shows balance sheet runoff continuing as expected. But the term premium has compressed faster than runoff alone would predict, suggesting flight-to-quality flows are doing more work than is visible in headline yields.
Why equities are not listening
Three reasons. First, earnings have surprised positively for four consecutive quarters, and that real cash flow is hard to argue with. Second, large-cap concentration means the index is reflecting five companies more than the underlying economy. Third, passive flows do not care about curve shape.
None of those reasons survive a meaningful repricing in rates. The first is mean-reverting. The second is now a vulnerability. The third reverses violently when it reverses at all.
What to watch
The most informative print over the next month is not CPI. It is the breadth of earnings revisions. When the bottom 400 of the S&P start to see negative revisions while the top 10 hold their estimates, the convergence between curve and index begins. Until then, the two markets remain on different stories.
For positioning, this argues for keeping duration on, trimming index-level equity beta, and rotating toward sectors with cleaner exposure to a slower nominal economy — including quality small caps and selective defensives.
The risk to the thesis
A clean reacceleration in growth — visible in capex intentions, hiring breadth, and small-business credit demand simultaneously — flattens the curve again and validates the equity tape. That outcome is possible. It is also not what the credit market is pricing.
For now the question for allocators is whether to trust the market that has been right more often historically or the one that has been right more recently.