Yes—but not in every market regime. Treasury bonds can still diversify stocks when growth fears or a risk-off shock send investors toward safe assets and yields lower. When inflation and expected rate hikes push yields higher, stocks and Treasuries can fall together. Rising yields alone do not determine whether Treasuries will offset equity losses; the cause of the rise matters.
Why rising yields can hurt bonds and stocks at the same time
When market yields rise, prices of existing fixed-rate bonds generally fall, all else equal. The size of that price response depends partly on duration: bonds with greater duration are more sensitive to a given change in yields. But a bond-price decline does not, by itself, tell you whether stocks will rise or fall alongside it.
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If yields are rising because inflation is running hot and investors expect tighter monetary policy, higher discount rates can weigh on both bond prices and equity valuations. The Federal Reserve’s May 2022 Financial Stability Report described markedly higher Treasury yields and notable declines in broad equity prices amid higher-than-expected inflation and uncertainty. That episode illustrates joint pressure; it does not establish that the same pattern must recur whenever yields rise. Federal Reserve, Financial Stability Report, May 2022.
When Treasuries may still offset stock losses
A different shock can produce a different result. If investors become more concerned about slowing growth or financial stress, demand for Treasuries may increase as investors seek safer assets. That demand can push Treasury prices up and yields down while equities fall.
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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 safe-haven diversification in some conditions—not a rule that Treasuries always rise when stocks fall. Federal Reserve Bank of New York Staff Report 723.
What the recent evidence says about stock–Treasury correlation
The U.S. Treasury’s Q1 2026 presentation charts daily-return correlations over a 120-day window through 2025. It says stock–Treasury correlation has become more volatile since COVID, and that the relationship has historically tended to be negative during low-inflation periods and positive during high-inflation periods. The presentation describes a changing relationship, not a live correlation reading for October 2026; its retrieved text does not give a final numeric chart value. U.S. Treasury, “Treasuries as a portfolio diversification tool,” Q1 2026 presentation.
Correlation is a measure of how returns have moved together over a specified period. It is not a guarantee of protection. A rolling correlation looks backward and depends on the window selected, so it can change as market conditions change. It also does not show how much a particular Treasury holding would offset a particular stock portfolio’s loss.
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How maturity and inflation protection change the choice
Nominal Treasuries: consider duration and spending horizon
For nominal Treasuries, consider how sensitive the holding’s value is to changing yields and policy expectations. Maturity, fund duration and the time when you may need to spend the money are related but distinct: a bond’s maturity is its repayment date, a fund’s duration is a measure of interest-rate sensitivity, and your horizon is when you expect to use the investment.
During the 2022 market-depth episode, the Fed reported the largest declines in Treasury market depth among shorter maturities and linked that finding to sensitivity to near-term policy expectations. Market depth concerns how readily securities can be traded; it is distinct from the price sensitivity captured by duration. The report does not say that short bonds are always more rate-sensitive than long bonds. Federal Reserve, Financial Stability Report, May 2022.
Inflation-protected Treasuries: a hedge with limits
Inflation-protected bonds and nominal Treasuries do not serve identical roles. A 2023 Chicago Fed 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 indexes. It also reports that many historical inflation-hedging relationships failed in 2020–2022. This is a working paper, and its authors note that working papers are 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”.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What historical examples can—and cannot—show
History includes periods when Treasuries cushioned equity losses as well as periods when stocks and bonds moved together. In a 2019 speech, Federal Reserve Vice Chair Richard H. Clarida described 2008 as a year in which the S&P 500 had a total return of approximately −37% while on-the-run 30-year Treasuries had a total return of approximately +38%. Those are historical figures for that episode, not a forecast of how Treasuries will behave in a future downturn.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsClarida also noted the importance of inflation conditions: “In the 1970s and 1980s, the sign of the correlation was positive, which implies that bond and stock returns tended to rise and fall together.” Richard H. Clarida, Federal Reserve Board speech, November 12, 2019.
A practical way to assess Treasuries as a diversifier
- Identify the risk you want to offset. Equity diversification, purchasing-power protection and cash for a known spending date are different objectives.
- Consider the likely shock. Inflation-driven tightening can pressure stocks and bonds together; growth fears or a risk-off shock may support Treasury prices.
- Match the bond exposure to your horizon. Evaluate maturity for an individual security and duration for a fund, alongside when you may need the money.
- Choose nominal or inflation-protected exposure deliberately. Their inflation behavior differs, and inflation hedging depends on the price index and time horizon.
- Distinguish the investment from its implementation. Individual Treasury securities and bond funds are different ways to hold exposure; the sources cited here do not establish current fund fees, yields, tax outcomes or a suitable allocation.
This evidence does not establish a current yield, an October 2026 stock–Treasury correlation, an expected return or an ideal portfolio allocation. It supports a conditional conclusion: Treasuries remain a potential diversifier, but their effectiveness depends on the shock affecting markets and the characteristics of the holding.
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