Why is my global index investment underperforming?
Your global index investment is likely underperforming due to currency fluctuations, where a strong local currency reduces returns from foreign stocks. It can also be caused by the poor performance of heavily weighted countries, like the US, even if your home market is doing well.
Is Your Global Investment a Disappointment?
You open your investment app, full of hope. You see your local market index is up 15% for the year. Fantastic! Then you scroll down to your global fund. It’s only up 3%. Maybe it’s even flat. A wave of frustration hits you. Your friend who only invests in local stocks is probably celebrating. Meanwhile, you tried to be a smart, diversified investor, and it feels like you're being punished for it. This feeling is common, but it's usually based on a misunderstanding of how global stock market indices actually work.
Investing across the world is a marathon, not a sprint. Short periods of underperformance are not just possible; they are expected. Before you sell your global fund in anger, let's break down what is likely happening under the hood.
Understanding How Global Stock Market Indices Are Built
A global index fund doesn't invest equally in every country. Instead, it follows a benchmark index, like the MSCI World or the FTSE Global All-World. These indices are almost always market-capitalization weighted. This means countries with bigger stock markets get a much larger slice of the pie.
Who has the biggest stock market in the world? The United States. By a long shot.
As a result, the US market typically makes up 60% or more of a global stock index. The remaining 40% is split between all the other developed countries like Japan, the UK, Canada, and Germany. This means your “global” fund is really a massive bet on the US market with some international flavour mixed in. If the US market has a bad year, your entire global fund will feel the pain, even if markets in Europe or Asia are doing well.
The Local Hero vs. The Global Team
It’s natural to compare your global fund to your local market index. This is called home country bias. You see local company names you recognize, and you hear about the local market's performance on the news every day. It feels familiar and safe.
But comparing a single country's performance to the whole world's is like comparing your city's weather to the global climate. They are different things with different purposes. Diversification across global stock market indices is designed to protect you from a single point of failure. If your home country's economy enters a long slump, your global investments can help cushion the blow.
Sometimes, the best-performing market in the world is a small, emerging one you've never even thought of investing in directly. A global fund gives you a piece of that action automatically.
Look at performance over different time periods. One year, the US might lead. The next, it could be India. The year after, maybe it's Europe. The goal of a global fund isn't to be the winner every single year. The goal is to be in the race, no matter which country is leading the pack.
Key Reasons Your Global Fund Is Lagging
If your global investment is underperforming your local one, it's usually down to one of these four reasons.
- Currency Fluctuations: This is the biggest and most misunderstood factor. Your global fund holds stocks in US dollars, euros, and yen. But you see your returns in your own local currency. If your currency gets stronger against the US dollar, your dollar-denominated returns are worth less when converted back. For example, if your US stocks gain 10%, but your local currency strengthens by 8% against the dollar, your actual return is only about 2%. This can be a huge drag on performance.
- Geographic Performance: As we discussed, the US market dominates global indices. If your home market (say, India or Australia) is having a boom year while the US market is trading sideways or falling, your local index will naturally look much better than your global fund. This is diversification in action—some parts of your portfolio will zig while others zag.
- Sector Mismatches: Your local index might be heavy in certain sectors, like banking or industrial companies. Global indices are often very heavy in the technology sector because of giant US tech firms. If tech stocks are in a global slump while your local banks are thriving, your global fund will underperform.
- Fees and Expenses: Every fund has an expense ratio, which is the annual fee you pay. While index funds have low fees, they aren't zero. These small costs, along with transaction costs inside the fund, create a slight drag on performance compared to the raw index itself.
Adjusting Your Global Investment Strategy
So, what should you do? The answer is usually to do nothing, but to do it with more confidence.
- Check Your Expectations: Understand that the purpose of global diversification is to reduce risk, not to win every performance race. You are trading the chance of hitting a home run in one market for a much lower chance of striking out completely.
- Zoom Out: Don't judge performance based on one year. Look at 5-year or 10-year rolling returns. Over longer periods, the benefits of capturing global growth and avoiding single-country risk become much clearer. The country that was the best performer last year is rarely the best performer this year.
- Understand Your Fund: Read the fund's fact sheet. What index does it track? What is the exact country and sector breakdown? Does it use currency hedging? Knowing what you own is the first step to being comfortable with how it behaves.
- Consider Rebalancing: If your local investments have shot up in value, they now represent a larger part of your total portfolio. This might be the perfect time to sell some of your local winners and buy more of your underperforming global fund. This is the classic investing rule: buy low, sell high.
Should You Ditch Your Underperforming Global Fund?
Panicking and selling your global fund now is likely a mistake. You would be locking in the recent underperformance and abandoning your diversification strategy right when it's being tested. The very factors causing the underperformance—like a strong local currency or a weak US market—are often cyclical. They will eventually turn.
When your local currency weakens again, it will provide a tailwind to your global returns. When another country takes the lead from the US, your fund will capture that growth. Sticking with your plan through these periods is what separates successful long-term investors from those who chase past performance. Your global fund isn't broken; it's just doing its job on a global stage, which doesn't always sync with the show happening in your own backyard.
Frequently Asked Questions
- Why is my global fund down when my local market is up?
- This often happens when the largest part of the global index, usually the US market, is performing poorly while your local market is strong. Your global fund's return is an average of many countries, so one country's boom can be diluted by another's slump.
- Does a strong local currency hurt my global investments?
- Yes, significantly. When you invest globally, your money is converted to foreign currencies (like US dollars). If your home currency strengthens, those foreign assets are worth less when converted back, reducing your overall return.
- Is the US stock market the same as the global stock market?
- No, but they are closely linked. The US makes up over 60% of most global stock market indices due to its large market capitalization. Therefore, the performance of the US market has a massive impact on the performance of any global index fund.
- Should I sell my underperforming global index fund?
- Generally, no. Short-term underperformance is normal for a diversified portfolio. Selling now would lock in your losses and abandon your long-term strategy. The conditions causing the underperformance, such as currency rates or regional performance, are often cyclical and can reverse.