S&P 500: Oversold Signals Clash With a Rapid Shift in Rate Expectations

Published 03/23/2026, 02:49 AM

The S&P 500 dropped sharply on Friday, falling more than 1.5% to finish at its lowest level since September. The index is technically oversold — trading below its lower Bollinger Band and with the RSI below 30 — setting up a potential bounce. But if the market fails to hold here, there isn’t much support below, and a deeper pullback could come quickly.S&P 500-Daily Chart

The VIX 1-day spiked on Friday and should fall once the market opens Monday, which could offer some short-term support. But even my Vanna model — a new tool I’ve been building over the past week — suggests the buying power from a vol crush has been largely exhausted. It helped flag the weak rally earlier last week, and while it’s still being refined, it’s signaling that any bounce from here may be short-lived.SPX-Vanna Exposure

What makes this more than a simple technical story is the rate picture. Fed funds futures are now pricing in rates near the current upper bound through year-end. The market has gone from expecting cuts to pricing in the possibility of a hike in a matter of weeks. And it’s not just the US — the euro area is pricing in multiple ECB hikes before year-end, and the UK is even further ahead, with SONIA futures implying more than three rate hikes.

The repricing in rates has been violent, and the most severe moves have been in the UK.100-ZQZ2026-Daily Chart

It’s not just the US — the euro area is pricing in multiple ECB hikes before year-end.100-ESRZ2026-Daily Chart

The UK is even further ahead, with SONIA futures implying more than three rate hikes.100-SOAZ2026-Daily Chart

The repricing in rates has been violent, and the most severe moves have been in the UK.GB 2-Yr Yield-Daily Chart

So while the S&P 500 looks oversold on a technical basis, the fundamental backdrop may not support a sustainable rally. Shifting from an easing cycle to a tightening cycle in just two weeks is a rapid and significant regime change. Bond market volatility has soared, which is not supportive of equities. And if the rate outlook is correct, the index likely hasn’t fallen enough — a reversion to historical median valuations would imply significant further downside from current levels.MOVE Index-Daily Chart

Of course, if oil prices fall, all of this could reverse quickly. But the longer oil stays elevated, the more entrenched these views become — similar to what we saw in 2022.

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