• Expectations of future interest rate movements are a key driver of bond market returns.

• Trying to time bond market participation around the interest rate cycle is risky and very difficult to execute.

• A diversified bond market exposure has outperformed cash and short-term bonds over the long term.

It’s been a turbulent few years for bond investors. Rapid rate hikes by central banks in 2022 triggered unprecedented declines in bond markets, investors suffered significant losses that year, with many questioning if bonds could still offer the same portfolio stabilising benefits against equity volatility that had been a hallmark of the asset class. 

It is in this type of environment that multi asset products, which tend to be diversified portfolios combining equities and bonds, become increasingly relevant. Multi assets portfolios offer a more balanced and resilient investment approach, especially during periods when traditional asset class relationships come under strain, as they offer a smoother way to navigate testing market landscapes. 

Since then, bonds have been slowly making a comeback. With today’s higher interest rates providing attractive starting yields and policymakers in rate-cutting mode, the long-term return outlook for bonds is the most attractive it’s been for decades. For example, we expect UK government bonds to return 5.5%¹ annually over the next ten years. 

Higher starting bond yields mean investors can earn significantly higher levels of income from bonds issued today compared with older bonds that were issued when interest rates were much lower. This marks an important shift in the contribution of income from bonds to total portfolio return. For multi asset investors, this strengthened income profile further enhances the role bonds can play in balancing equity risk. 

For more information on our outlook for UK government bond returns, read our recent article, What’s driving the outlook for gilt returns?.

Why have bonds been so volatile?

Bond volatility is primarily a function of duration risk² - a bond’s sensitivity to interest-rate changes - and increases with longer duration and maturity, all else being equal. For example, bonds with longer durations (measured in years) are more sensitive to rising rates because the present value of their future income payments are not worth as much in a higher interest rate environment. The opposite is true when interest rates decline - falling policy rates typically cause long-term bond prices to rise. 

The rapid rise in interest rates back in 2022 caused heightened bond market volatility. This repricing was based on the return an investor would receive if they held the bonds to maturity (yield-to-maturity). When rates are going up, existing bond prices tend to fall to adjust for the change in yield that investors would receive on newer bonds with higher coupons. The opposite is true when rates fall new bonds offering lower coupons push up the prices of older bonds with higher coupon rates.

Ultimately, bond price volatility comes down to interest rate movements and, more importantly, the market’s expectations of future interest rate changes.

Expectations matter

While the relationship between interest rates and bond prices might sound straightforward, bond markets rarely move exactly in line with actual changes in interest rates.

Instead, expectations about future interest rate changes often have an even bigger impact on bond prices than the actual movements in rates. This is because when policy rates are expected to rise or fall, some investors will adjust their bond holdings to try and maximise their returns ahead of any actual rate movements - which can push bond prices further away from their fair values. As a result, investors that tactically position their bond holdings can wind up suffering greater losses than those who remain invested in bond portfolios that are more fully diversified across the yield curve.

As the chart below demonstrates, the short-term correlation between bond yield movements and actual changes in interest rates is quite low. For example, when policymakers stopped hiking rates back in the first half of 2023, actual interest rates plateaued (the blue line); yet bond yields began to fall significantly (orange line). This was because the market started pricing in future rate cuts - albeit too early and too deeply, as it turned out - before eventually rebounding as investors readjusted their expectations. In 2024, yields rose once again as investors readjusted their expectations, further supporting the notion that trying to time market movements is extremely difficult. This illustrates how markets overprice interest rate moves, snapping back when the outcomes are different to expectations and driving bond yields in the opposite direction to what was initially priced in.

Low correlation between bond yields and central bank rates

US

UK

Past performance is not a reliable indicator of future results.

Source: Vanguard and Bloomberg, as at 30 November 2025

Notes: For the US: Yield-to-Worst of Bloomberg US Aggregate Bond Index and the US Federal Funds Target Rate (upper bound) from January 2023 to September 2025. The Federal Funds Rate is the target interest rate range set by the Federal Open Market Committee (FOMC). This is the rate at which commercial banks borrow and lend their excess reserves to each other overnight. For the UK: Yield-to-Worst of Bloomberg Sterling Aggregate Bond Index and Bank of England (BoE) Official Bank Rate from January 2023 to September 2025. The Bank Rate determines the interest rate the BoE pays to commercial banks that hold money with the central bank.

Keep it safe, keep it diversified

Interest rate expectations often lead to some investors trying to market-time their participation. For example, some investors went into cash and short-term bonds to avoid the market volatility and take advantage of higher savings rates on their cash. However, when policymakers started cutting rates in 2024, cash rates quickly followed suit, leaving those investors who were trying to time market movements running the risk of staying in cash for too long and missing out on the potential benefits of a rebound in bond prices.

Ultimately, diversified bond holdings have historically offered a counterbalance to equity market volatility, so it’s important for multi-asset investors to think carefully before introducing further risk to their bond exposures by shifting in and out of short- and long-term bonds. As the next chart shows, a diversified bond exposure, which includes a broad range of durations and maturities, has outperformed cash and short-term bonds over the long term, even with the impact of 2022’s selloff bringing down total returns.

Diversified bonds outperform over the long-term

Past performance is not a reliable indicator of future results.

Source: Vanguard and Bloomberg, as at 30 November 2025.

Notes: Cumulative performance in GBP with gross income reinvested of different gilt duration segments from 30 June 1998, which is the earliest date with data availability for all three indices, until 30 June 2024. The money market segment is represented by the ICE BofA 0-1 Year UK Gilt Index, the short-duration segment is represented by the ICE BofA 1-3 Year UK Gilt Index and the diversified gilt exposure is represented the ICE BofA UK Gilt Index. Source: Bloomberg. Data as of 30 September 2025.

Encouraging signs are emerging

We think today’s higher interest rate environment represents a structural shift that will endure for many years to come. Higher starting yields are good news for bond and multi-asset investors. We remain positive on the long-term return prospects for bond markets which support the favourable return expectations for our lower-risk multi-asset portfolios. The chart below shows our latest 10-year annualised return expectations for sterling investors across different equity-bond splits. It shows that the gap between our median return expectations for lower-risk portfolios and higher-risk, higher-equity-allocation portfolios has narrowed. This is being driven by the improved return outlook for bond markets, while high US equity valuations are weighing on the return potential for equities over the next ten years.

Solid prospective multi-asset returns

Distribution of portfolio return expectations for the next 10 years

Any projections should be regarded as hypothetical in nature and do not reflect or guarantee future results.

Notes: The forecast corresponds to the median of 10,000 Vanguard Capital Market Model (VCMM) simulations for 10-year annualised nominal returns in GBP for multi-asset portfolios highlighted here. Asset-class returns do not consider management fees and expenses, nor do they reflect the effect of taxes. Returns reflect the reinvestment of income and capital gains. Indices are unmanaged; therefore, direct investment is not possible. Equity comprises UK equities and global ex-UK equities. Fixed income comprises UK bonds and global ex-UK bonds (hedged). UK equity home bias: 25%, UK fixed income home bias: 35%. UK equities represented by the MSCI UK Total Return Index; global ex-UK equities represented by the MSCI AC World ex-UK Total Return Index; UK bonds represented by the Bloomberg Sterling Aggregate Bond Index; global ex-UK bonds (hedged) represented by Bloomberg Global Aggregate ex Sterling Bond Index Sterling Hedged.

IMPORTANT: The projections and other information generated by the VCMM regarding the likelihood of various investment outcomes are hypothetical in nature, do not reflect actual investment results and are not guarantees of future results. Distribution of return outcomes from VCMM are derived from 10,000 simulations for each modelled asset class. Results from the model may vary with each use and over time.

Source: Vanguard calculations, as at 31 December 2025.

Find out what Vanguard expects for markets and the economy in 2026:

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Today’s bond market differs significantly from the heightened volatility of 2022, highlighting how quickly market conditions can change. Even with higher starting yields for long-term bonds, timing markets and interest rate cycles remains extremely difficult. That’s why maintaining a disciplined, globally diversified multi-asset approach aligned with a client’s long-term goals and risk preferences continues to be the most reliable way to navigate ever changing and challenging markets.

¹ Any projections should be regarded as hypothetical in nature and do not reflect or guarantee future results. 

² Duration risk refers to a bond or bond portfolio’s sensitivity to interest rate changes, accounting for characteristics such as yield, coupon rate and maturity. Bond prices move inversely to changes in interest rates, so that if interest rates rise (or fall), bond prices fall (or rise). The longer a bond’s duration, measured in years, the more sensitive its price to interest rate changes. Note that total bond price volatility is also affected by the yield curve, convexity, credit rating and liquidity.

IMPORTANT: The projections or other information generated by the Vanguard Capital Markets Model® regarding the likelihood of various investment outcomes are hypothetical in nature, do not reflect actual investment results, and are not guarantees of future results. VCMM results will vary with each use and over time. The VCMM projections are based on a statistical analysis of historical data. Future returns may behave differently from the historical patterns captured in the VCMM. More important, the VCMM may be underestimating extreme negative scenarios unobserved in the historical period on which the model estimation is based.

The Vanguard Capital Markets Model® is a proprietary financial simulation tool developed and maintained by Vanguard’s primary investment research and advice teams. The model forecasts distributions of future returns for a wide array of broad asset classes. Those asset classes include US and international equity markets, several maturities of the US Treasury and corporate fixed income markets, international fixed income markets, US money markets, commodities, and certain alternative investment strategies. The theoretical and empirical foundation for the Vanguard Capital Markets Model is that the returns of various asset classes reflect the compensation investors require for bearing different types of systematic risk (beta). At the core of the model are estimates of the dynamic statistical relationship between risk factors and asset returns, obtained from statistical analysis based on available monthly financial and economic data from as early as 1960. Using a system of estimated equations, the model then applies a Monte Carlo simulation method to project the estimated interrelationships among risk factors and asset classes as well as uncertainty and randomness over time. The model generates a large set of simulated outcomes for each asset class over several time horizons. Forecasts are obtained by computing measures of central tendency in these simulations. Results produced by the tool will vary with each use and over time.

The primary value of the VCMM is in its application to analysing potential client portfolios. VCMM asset-class forecasts—comprising distributions of expected returns, volatilities, and correlations—are key to the evaluation of potential downside risks, various risk–return trade-offs, and the diversification benefits of various asset classes. Although central tendencies are generated in any return distribution, Vanguard stresses that focusing on the full range of potential outcomes for the assets considered, such as the data presented in this paper, is the most effective way to use VCMM output.

The VCMM seeks to represent the uncertainty in the forecast by generating a wide range of potential outcomes. It is important to recognise that the VCMM does not impose “normality” on the return distributions, but rather is influenced by the so-called fat tails and skewness in the empirical distribution of modelled asset-class returns. Within the range of outcomes, individual experiences can be quite different, underscoring the varied nature of potential future paths. Indeed, this is a key reason why we approach asset-return outlooks in a distributional framework.

Investment risk information

The value of investments, and the income from them, may fall or rise and investors may get back less than they invested.

Past performance is not a reliable indicator of future results.

Any projections should be regarded as hypothetical in nature and do not reflect or guarantee future results.

Important information

This is directed at professional investors and should not be distributed to, or relied upon by retail investors.

This is designed for use by, and is directed only at persons resident in the UK.

The information contained herein is not to be regarded as an offer to buy or sell or the solicitation of any offer to buy or sell securities in any jurisdiction where such an offer or solicitation is against the law, or to anyone to whom it is unlawful to make such an offer or solicitation, or if the person making the offer or solicitation is not qualified to do so. The information does not constitute legal, tax, or investment advice. You must not, therefore, rely on it when making any investment decisions.

The information contained herein is for educational purposes only and is not a recommendation or solicitation to buy or sell investments.

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