Mutual Fund Overlap : Overview and How it Work

by BG

Published On May 19, 2025

In this article

Knowing the composition of your investment portfolio is crucial in the sophisticated financial markets of today. One such important feature for mutual fund investors, which tends to go unnoticed, is the potential for mutual fund overlap. Mutual fund overlap in an individual's portfolio occurs when different schemes hold many of the same underlying securities.

Holding several mutual funds may appear to be a diversification technique, but heavy mutual fund overlap may have the opposite effect. Excessive overlapping among mutual funds may result in unintentional risk build-up, which dilutes the desired benefits of diversification.

Hence, a proper mutual fund overlap verification is a mandatory practice for intelligent investors. Understanding the consequences of mutual fund overlap is indispensable for effective financial planning. This blog post will explore the procedures of how to verify overlap of mutual funds, discuss certain circumstances where marginal benefits of mutual fund overlap may not be present, and provide procedures on how to verify mutual fund portfolio overlap. In addition, we will discuss how to conduct an effective mutual fund overlap comparison in order to refine your investment strategy and enhance your long-term financial future.

What is Mutual Fund Overlap?

Essentially, mutual fund overlap occurs when different mutual fund schemes in your portfolio invest in the same underlying assets, most commonly stocks. For example, if you hold a large-cap fund and a multi-cap fund, they might both have significant holdings in the same leading companies. This common investment is the overlap of mutual funds.

The degree of this overlap among mutual funds can be low. It can be very small, with only a few overlapping stocks, or high, with most of the portfolios being similar. Identifying how much overlap is between mutual funds in your portfolio is essential as it has direct bearing on your diversification. Diversification attempts to allocate risk across various investments. Enduring mutual fund overlap reduces such a spread and concentrates risk across the shared positions. A mutual fund overlap test then becomes essential to determine the actual diversification and risk in your portfolio.

Why Does Portfolio Overlap Happen?

There are a number of reasons for mutual fund overlap. To start with, managers of funds tend to prefer the same quality stocks, particularly those in the same investment style or market capitalization. For example, most large-cap funds tend to invest in the same blue-chip names, resulting in mutual fund overlap.

Secondly, the majority of funds follow the same market indexes like the Nifty 50. Funds that follow the same index will clearly hold the same stocks in the same ratios, resulting in a visible overlap among mutual funds with the same benchmark. Even actively managed funds can have broadly followed index constituents.

Thirdly, investors unintentionally cause duplication by choosing more than one fund that is considered different but has the same underlying fund, usually as a result of lack of thorough study. Lacking a proper comparison of mutual fund overlap or knowledge of how to test mutual fund portfolio duplication, investors may unintentionally duplicate a portfolio. Ease of online investment is one other reason, and investors are being diversified across schemes without thoroughly researching the underlying holding and mutual fund duplication scope. Identification of such reasons is where it begins to consider potential overlap effectively.

How to Check Overlap Of Mutual Funds?

One of the important steps in investment management is to check your mutual fund overlaps. One of the ways you can effectively do this is by using online portfolio tracking tools that most financial websites and advisors provide. Such websites usually let you feed in your mutual fund holdings and show the common stocks and their weightage in your schemes, which helps you easily detect potential overlap among mutual funds.

Or you can simply compare the portfolio disclosures of mutual fund companies, usually on a monthly or quarterly basis. By looking at the top holdings and overall portfolio makeup of your funds, you can eyeball the instances of overlap among mutual funds. Look for the percentage in common stocks in each fund to estimate the significance. Additionally, some financial data providers provide specialized mutual fund overlap comparison tools, which allow for a direct side-by-side comparison of fund holdings and frequently include an overlap percentage to measure the commonality and help determine how to verify mutual fund portfolio overlap.

Risks Associated with Mutual Fund Overlap

One of the important steps in investment management is to check your mutual fund overlaps. One of the ways you can effectively do this is by using online portfolio tracking tools that most financial websites and advisors provide. Such websites usually let you feed in your mutual fund holdings and show the common stocks and their weightage in your schemes, which helps you easily detect potential overlap among mutual funds.

Or you can simply compare the portfolio disclosures of mutual fund companies, usually on a monthly or quarterly basis. By looking at the top holdings and overall portfolio makeup of your funds, you can eyeball the instances of overlap among mutual funds. Look for the percentage in common stocks in each fund to estimate the significance. Additionally, some financial data providers provide specialized mutual fund overlap comparison tools, which allow for a direct side-by-side comparison of fund holdings and frequently include an overlap percentage to measure the commonality and help determine how to verify mutual fund portfolio overlap.

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How to Reduce Portfolio Overlap in Mutual Funds?

Effective management of mutual fund overlap necessitates regular review and controlled portfolio realignments. Revising your portfolios repeatedly is a wise idea. It will allow you to identify areas where there has been excessive overlap amongst mutual funds due to market movement or follow-up purchases. Depending on such studies, you may need to reposition your portfolio. This can be done by trimming your overlap using high overlap funds and reinvesting the same in alternatives with more diversification advantage. Review and rebalancing periodically are most important in maintaining mutual fund overlap at reasonable levels and ensuring that your portfolio is consistent with your goals.

In order to simplify life, it is strongly suggested that you utilize fund analysis software and programs. Duplicates mutual fund overlap input capabilities are available on most investment websites and money websites to allow you to enter your holdings and have it automatically calculate duplicate mutual fund overlap. They usually provide you with a breakdown of overlapping holdings so that you can easily view the level of mutual fund overlap in your portfolio. With these tools, investors are able to more easily perform a mutual fund overlap check and understand how to confirm mutual fund portfolio overlap, which leads to more educated portfolio adjustment decisions.

When Can Overlap Be Beneficial?

Although generally seen as a possible drawback, there are certain, although limited, instances where a degree of overlap between mutual funds can be tactically beneficial. A case in point is if an investor believes very strongly that the long-run future of some specific market niche or investment genre is particularly strong. In this case, they might intentionally choose to invest in multiple funds focused on that area, which would naturally result in some overlap between mutual funds. The intention here is to amplify exposure to a favored segment rather than it being an unintentional consequence of portfolio construction.

Another possible situation where some mutual fund benefits overlap is in tactical asset allocation. Under certain market conditions, an investor may wish to take temporary extra exposure to some high-quality companies that are held in various fund categories. This is a tactical action based on a particular market view. But it must be pointed out that even in such a scenario, the intention is not mere replication but strategic raising of visibility to certain investment concepts. It's also equally important to get such cases reviewed every now and then to make sure the desired effects of the concurrent mutual fund ideas are in accordance with the broader scheme of investment and risk tolerance. Excessive or unintended overlap can still create unwanted concentration risk, highlighting the necessity of regular mutual fund overlap check.

Conclusion

It is crucial to understand and manage mutual fund overlap for a diversified portfolio. Excessive overlapping of mutual funds can decrease diversification and add risk. Mutual fund overlap check should be done regularly. Make use of tools available for comparing mutual fund overlap. Although few advantages of mutual fund overlap are present in certain situations, reducing unnecessary overlap is usually important for improved diversification and risk control. Active management will create a more robust portfolio.

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Frequently Asked Questions

Is mutual fund overlap always bad?

Not necessarily. Small, intentional mutual fund overlap might occur. However, excessive overlapping of mutual funds usually reduces diversification and increases risk. Monitor significant mutual fund overlap.

How much overlap is considered acceptable?

No fixed amount exists. Low overlap (e.g., <15-20% by weight) is usually acceptable. Greater overlap among mutual funds requires examination based on your objectives and risk tolerance. Periodic mutual fund overlap check assists in evaluating this.

Can I diversify with funds from the same AMC?

Not guaranteed. Funds from the same AMC can still have high mutual fund overlap. Diversification depends on underlying holdings, not just the fund house. Conduct a mutual fund overlap comparison.

What tools can I use to check mutual fund overlap?

Utilize web-based portfolio trackers and investment sites. There are some mutual fund overlap comparison tools provided by financial data providers specifically. They assist in finding out how to verify overlap of mutual funds and how to verify mutual fund portfolio overlap.

Does overlapping influence SIP performance?

Yes. Significant mutual fund overlap implies your SIP returns will have a strong correlation with the common assets, thereby diminishing the diversification advantages of SIP. Factor in possible mutual fund overlap when investing in SIP.

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