Own Several Funds? Check Whether You Keep Buying the Same Companies

Imagine owning a broad share-market fund, a growth fund, and a technology fund. The account statement shows three investments. Underneath those labels, however, the same large companies may appear repeatedly. Adding another fund does not automatically add a different source of risk.

Fund overlap means that two or more funds hold some of the same investments. It is common and is not automatically a problem. The question is whether the combined holdings match the balance you intended. This educational check helps you examine that question without treating a discovery as an instruction to buy or sell.

Start with holdings, not the fund’s name

A mutual fund pools investors’ money into a portfolio. An exchange-traded fund, or ETF, also holds a portfolio, with shares that trade on an exchange. Either structure can offer broad exposure or concentrate on a narrow area. The label alone does not tell you how much variety you own.

Find each fund’s holdings information from its provider and record the date of the information. Start with the largest holdings, then use a fuller list if available. A top-ten list is a screening tool: it can reveal an obvious repetition but cannot establish that the remaining holdings are different.

Compare like with like. Holdings reported at different dates may have changed in the meantime. Company names can also appear in slightly different forms, and a company may issue more than one share class. Keep a note when two entries represent exposure to the same underlying business.

Work through one company

Consider this hypothetical portfolio, using round numbers solely to show the calculation:

• Fund A represents 60% of the portfolio and holds 5% in Company X.
• Fund B represents 30% of the portfolio and holds 10% in Company X.
• A direct investment in Company X represents the remaining 10%.

Multiply each fund’s portfolio weight by the company’s weight inside it. Fund A contributes 3% of the overall portfolio to Company X: 60% multiplied by 5%. Fund B contributes another 3%. Add the direct holding, and the combined exposure is 16%.

Adding 5%, 10%, and 10% would produce the wrong answer because the first two percentages describe the funds, not your whole portfolio. Weighting the holdings connects those different levels. The calculation describes exposure at a point in time; it does not predict future gains or losses.

You can repeat it for the largest shared companies. Use a consistent definition of the portfolio, such as all investment accounts you are reviewing together. Otherwise, a percentage calculated within one small account may be mistaken for a percentage of your entire investment position.

Look beyond identical names

Two funds can hold different companies while remaining exposed to similar pressures. Businesses in the same industry may respond to the same demand changes, regulation, or financing conditions. Geographic and asset-class concentration can also matter even when individual holdings do not overlap.

Conversely, a modest shared holding does not make two funds identical. They may differ substantially in the rest of their portfolios, investment mandates, costs, and geographic reach. Count-based statements such as “these funds share twenty stocks” omit the size of those positions.

Keep three questions separate: Which exact holdings repeat? How large are those repeated positions? What broader risks do the funds share? Answering all three is more informative than relying on the number of funds in the account.

Give each holding a clear role

Write one sentence explaining why each fund belongs in the portfolio. Possible roles include broad domestic equity exposure, overseas equity exposure, or a particular type of bond exposure. These are descriptions, not a suggested allocation. Appropriate choices depend on goals, time horizon, and tolerance for loss.

If two funds have the same role, investigate whether their differences are useful to you. An intentional preference for a particular sector is different from a concentration created accidentally through several appealing fund names. The objective is awareness and a coherent allocation, not eliminating every repeated company.

Before making changes, consider transaction costs, tax consequences, account restrictions, and how the change would affect the rest of the portfolio. A qualified adviser can help with decisions that depend on your circumstances. Diversification can reduce concentration risk, but it cannot ensure a profit or prevent market losses.

Keep a dated snapshot

Save the source dates, fund weights, and calculations in a simple review note. Revisit it when you add a fund, when a fund changes its approach, or during your regular portfolio review. Holdings and market values move, so an old overlap estimate is not a permanent description.

The useful outcome is a sentence you can defend: “These are the businesses and risks my money is exposed to, and this is how they fit my plan.” Reaching that clarity matters more than accumulating a longer list of fund names.