Global Bonds: How global bond funds work

Let’s start our analysis of the global bonds market with some basics.

A bond is an IOU. When someone buys one, they’re lending money to the issuer in return for regular interest (known as the coupon) and their original investment returned on a set future date. Global bonds are fixed-income securities issued by governments and companies worldwide. Some focus on developed markets, while others can invest in emerging areas.

A global bond fund, meanwhile, is run by a professional manager. Money from numerous investors is pooled to buy multiple bonds and combine them into one diversified portfolio. Unfortunately, these terms cause confusion on search engines as they can refer to both a specific type of issued bond and a broader category of investment funds.

In our analysis of the global bonds market, we look at what global bonds can invest in, how they’re used by investors, and which global bond funds are worth considering.

What a global bond fund can invest in

These funds are a popular way of investing in global bonds because they provide diversified exposure to attractive fixed income opportunities around the world. However, there are different types of global bonds, so investors must know the differences to fully understand how a particular fund is invested.

Government bonds are usually issued by national governments to raise money for public spending and to manage their finances. This can include stable governments in developed countries, such as the US and the UK, as well as those in emerging markets where there may be greater volatility. Corporate bonds, meanwhile, are issued by companies seeking to expand, acquire other businesses, or refinance existing debt.

Both government and corporate issuers are assessed by ratings agencies such as S&P on the likelihood that they will pay both interest and principal. Investment grade corporate bonds are those issued by companies that are adjudged to be reliable and likely to keep their promises. High yield corporate bonds are from issuers with a higher chance of default. In exchange for accepting this increased risk, investors will be paid a higher interest rate.

Why investors use global bond funds

Investing in global bonds can be a great way to diversify a portfolio, as it spreads interest rate, inflation, and political risks across regions. The income/yield opportunities on offer can also vary, so a skilled fund manager can craft the optimum exposure for their particular mandate.

It’s important to recognise that the global bonds market is vast. There are far more issuers, sectors and bond structures available for inclusion. Bonds are also seen as a safer investment than equities. While that is true to a large extent, it doesn’t mean to say they can never fail.

Let’s look at some of the potential risks.

Key risks to understand

The first risk with global bonds is credit risk. This is the possibility that the issuer may fail to pay the interest and the principal. That’s why you need to monitor the latest credit ratings. Political instability can also have a negative impact. This includes new governments, regulatory changes and economic problems.

Next is interest rate risk. Generally, bond prices fall when interest rates rise because the coupons being paid on existing products look comparatively less attractive. Inflation risk is another potential concern. This is the rate at which prices rise. Should they increase, then the fixed interest payments will lose some of their purchasing power.

Then there are currency risks. As global bonds may be issued in different currencies, changes in exchange rates can affect returns. We’ll explore how to ‘hedge’ this risk in the next section.

Liquidity can also be an issue. When markets are stressed, some bonds can be hard to sell. This means sellers may need to reduce bond prices.

The final risk to understand when it comes to global bonds’ performance is the skill of the manager at the helm. That’s why you need to spend time analysing their track record.

GBP-hedged vs unhedged – what UK investors should know

Hedged share classes can help reduce the currency risk for investors in global bonds. They use financial instruments to minimise the effects of exchange rate movements on returns. Take the example of a US Treasury earning 4% in US dollar terms. Should the US currency fall 2% versus sterling, your return will be around 2%. If there’s a hedge in place, it will be closer to 4%.

Of course, investors can benefit from not being hedged should the exchange rate move in the opposite direction. That’s why a final decision must be based on their goals and risk appetites. While hedged share classes aim to minimise the risks, it’s not always possible to perfectly match the hedge to the asset’s exposure.

Active vs index global bond funds

The global bonds market involves both passive and active investing. Passive involves buying and holding bonds until maturity – or investing in funds that simply track bond indices. They are best suited to investors who want capital preservation and income, rather than trying to capitalise on interest rate or market movements. Active investing, meanwhile, aims to outperform bond indices. Their managers will seek to capitalise on price movements by trading bonds at specific times.

How to choose a global bond fund

There’s no shortage of options so what do people need to consider when choosing the most suitable fund for investing in global bonds?

  • Step one: Decide your objective? Do you want a regular income or to build your investment’s value over time? Are you happy to take more risk in the pursuit of higher returns?
  • Step two: What approach does the fund take? Is it a passive or active fund? Does the manager stick tightly to a benchmark, or do they have scope to invest in what they see as the most attractive opportunities?
  • Step three: How is the fund positioned? Does it have a bias towards safer, developed markets or substantial exposure to emerging markets? What is the split between these areas?
  • Step four: What holdings are in place? Consider where it’s invested. For example, how much is in investment grade and high yield corporate bonds? Is it diversified by sector?
  • Step five: How has it been managed? Past performance is no guarantee of future success, but it’s important to see how a fund and manager have performed over different periods. For example, does it have a high turnover?
  • Step six: What risk controls are in place? Finally, consider hedging share classes, the use of derivatives and whether it’s concentrated in terms of holdings.

Where global bonds can fit in a portfolio

The role played by global bonds in a portfolio will depend on what an investor is trying to achieve and their attitude to risk.

Popular reasons for holding them include diversifying a portfolio and reducing overall portfolio volatility. This makes portfolios less vulnerable to stock market downturns. Investors can also gain exposure to different interest rate and inflation environments, as well as to a vast array of fixed income markets. More cautious investors may opt to have global bonds as a core holding in their portfolios, while others could prefer smaller, ‘satellite’ positions. According to Vanguard research, even a modest allocation of around 30% to international bonds can reduce portfolio volatility*.

FundCalibre’s Elite Rated Global Bond funds

Our expert team analyses thousands of funds, and only the very best are handed a coveted Elite Rating. Approximately 10% in any particular sector will be given this recognition. In addition, Elite Radar is a badge for funds that are on our watchlist. These are the portfolios considered potential Elite Rating candidates for the future.

FundCalibre’s research analysis enables investors to explore key facts about the fund, including its investment approach, risk taken, and recent global bond funds’ performance. However, it’s worth would-be investors learning as much as possible about the global bonds market from articles, fund factsheets and commentaries.

FAQs about Global Bonds

What are global bonds?

Global bonds are fixed-income securities issued by companies and governments in countries around the world.

What’s the difference between global bonds and Eurobonds?

Eurobonds are denominated in currencies other than that of the country in which it’s been issued. Global bonds, on the other hand, can be issued simultaneously in multiple markets.

Are global bond funds risky?

Yes. There are interest-rate, credit and currency risks. However, they can also provide diversification, so it depends on your objectives and risk appetite.

Should UK investors hedge global bonds back to GBP?

This depends on their situation. Some investors like to reduce the impact of exchange-rate fluctuations.

What does “GBP hedged” mean on a fund?

It refers to using financial instruments to minimise the impact of exchange rate movements on an investor’s returns.

How do global bond funds make money?

The main source is interest paid by the bonds held by the fund. However, it can also be from rising bond prices and sometimes currency movements.

What is duration and why does it matter?

Duration measures a bond’s sensitivity to interest rate movements. For example, a fund with a 10-year duration will be riskier in a rising-rate environment than one with a shorter duration.

Do global bond funds invest in emerging markets?

Yes, they can. However, it will depend on the individual fund’s mandate.

Global bonds vs international bonds – is there a difference?

Yes. Global bonds are issued simultaneously in multiple markets. An international bond refers to a category that includes any bond issued outside the issuer’s domestic market.

Are global bond funds good when interest rates rise?

Bond prices fall when interest rates rise because the coupons being paid on existing products look comparatively less attractive.

What’s the difference between investment grade and high yield bonds?

Investment grade bonds have a lower probability of defaulting. High yield bonds, meanwhile, are riskier but usually offer better interest rates.

Do global bond funds pay income?

Yes. Most pay income, but the rate and frequency can vary.

How do I compare two global bond funds?

You should compare funds on metrics such as yield, duration, credit quality of holdings, and geographic exposure. A fund manager’s record and the portfolio’s costs are also important.

What does Elite Rated mean on FundCalibre?

This means funds that have been analysed by FundCalibre’s experts and regarded as being among the best managed portfolios in their respective sectors.

 

*Source: Vanguard, 6 November 2025