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Yes—but not reliably in every market regime. Treasuries can still diversify stocks when growth worries or a market shock drive investors toward safer assets and yields fall. When inflation pushes yields up, however, existing Treasury prices and stock prices can both decline. Rising yields alone do not tell you whether Treasuries will offset equity losses; the cause of the rise matters.
Why rising yields can hurt both bonds and stocks
When market yields rise, the prices of existing fixed-rate Treasury securities generally fall, all else equal. Investors can buy newly issued or otherwise comparable bonds at higher yields, so older bonds with lower coupon payments become less valuable. The size of the price response depends in part on the bond’s interest-rate sensitivity, commonly described through duration.
Stocks can also come under pressure when yields rise. If the increase reflects unexpectedly high inflation and expectations of tighter monetary policy, investors may reassess corporate costs, future earnings and the value of distant profits. In that kind of inflation-driven shock, bonds and stocks may fall together rather than offset one another.
What the evidence says about stock–Treasury diversification
The U.S. Treasury’s Q1 2026 presentation, which charts daily-return correlation through 2025, describes Treasuries as historically countercyclical to risky assets but says the stock–Treasury relationship has become more volatile since COVID, sometimes turning positive. The presentation also describes a historical pattern: correlation tended to be negative during low-inflation periods and positive during high-inflation periods. That is a regime description, not a guarantee or a current October 2026 correlation reading. U.S. Treasury: Treasuries as a portfolio diversification tool
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A clear example of joint pressure came in 2022. The Federal Reserve’s May 2022 Financial Stability Report described markedly higher Treasury yields alongside notable declines in broad equity prices amid higher-than-expected inflation and uncertainty. It illustrates how an inflation shock can weaken diversification; it does not establish that every period of rising yields will repeat that pattern. Federal Reserve: Financial Stability Report, May 2022
When Treasuries may still cushion stock losses
A yield increase is not the only force that can move Treasury prices. If growth fears or a risk-off shock dominate, investors may seek safer assets, demand for Treasuries can rise, and yields can fall. That can help Treasury prices while stocks struggle.
New York Fed staff research finds nonlinear relationships between volatility and stock and Treasury returns that are consistent with flight-to-safety behavior as volatility rises from moderate to high. This supports the possibility of conditional safe-haven behavior, not a rule that Treasuries always rise when stocks fall. Federal Reserve Bank of New York Staff Report 723
What maturity and inflation protection change
Nominal Treasuries and interest-rate sensitivity
Maturity and duration help determine how sensitive a holding’s market value is to yield changes. A longer-duration position will generally be more exposed to a given change in yields, though the precise sensitivity depends on the security or fund. A bond’s stated maturity is not the same thing as a fund’s duration, and neither is automatically the same as an investor’s spending horizon.
In the specific 2022 market-depth episode, the Federal Reserve reported the largest declines in Treasury market depth among shorter maturities and linked this to sensitivity to near-term policy expectations. Market depth describes trading liquidity; it is distinct from price sensitivity. The finding does not mean short bonds are always more rate-sensitive than long bonds. Federal Reserve: Financial Stability Report, May 2022
Inflation-protected Treasuries
Inflation-protected securities address a different objective from nominal Treasuries: reducing exposure to inflation as measured by a specified index. A 2023 Federal Reserve Bank of Chicago working paper says inflation-protected bonds can hedge headline consumer inflation at matching maturities, but may perform poorly over shorter horizons or against other price indices. It also reports that many historical inflation-hedging relationships failed during 2020–2022. The paper is a working paper; its authors note that it is not edited and that opinions and errors are their responsibility. Federal Reserve Bank of Chicago: One Asset Does Not Fit All: Inflation Hedging by Index and Horizon
How to assess Treasuries for your portfolio
Before treating a Treasury holding as a diversifier, distinguish the job you want it to do. A holding intended to cushion equity losses is not necessarily the right match for one intended to protect purchasing power or fund a specific future expense.
- Identify the shock you are concerned about. Inflation-led tightening can pressure stocks and bonds together; growth-driven risk aversion can support Treasury prices.
- Check interest-rate sensitivity. Consider the duration of a fund or the characteristics and maturity of an individual security, rather than assuming all Treasuries react alike.
- Match the measure and horizon. Inflation protection depends on the index and period being considered, and an investor’s time horizon may not match a bond’s maturity or a fund’s duration.
- Separate diversification from purchasing-power protection. Nominal Treasuries and inflation-protected securities address different risks and should not be treated as interchangeable.
- Read correlation as historical context, not a promise. A rolling correlation depends on the measurement window and describes past co-movement; it cannot ensure that a holding will offset losses next time.
Individual Treasury securities and Treasury funds are different ways to implement an exposure. The cited evidence does not establish current fund fees, yields, tax consequences or a personalized allocation, so those details need to be evaluated for the specific security or fund and the investor’s circumstances.
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In a 2019 speech, Federal Reserve Vice Chair Richard H. Clarida cited the 2008 episode in which the S&P 500 had an approximately −37% total return while on-the-run 30-year Treasuries returned approximately +38%. This is a historical example of Treasuries hedging equity losses, not a forecast of future performance. Clarida also said a yield-curve model attributed around 100 basis points of the decline in the U.S. 10-year nominal term premium since the early 1990s to a decline in the inflation risk premium; that is a historical explanation, not a current term-premium estimate. Federal Reserve: Richard H. Clarida speech, November 12, 2019
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