You are investing in five different mutual funds. You feel diversified. You are safe. Then you pull up the holdings and find that four of those funds own the same 12 stocks. Congratulations, you have just found a mutual fund overlap.
This is one of the most common and least spoken about problems in Indian retail investing. Let’s break it down clearly.
What Is Mutual Fund Overlap?
Mutual fund overlap is defined as the % of common stocks held in common across 2 or more mutual fund schemes in your portfolio. If Fund A and Fund B both have HDFC Bank, Reliance Industries, and Infosys in similar weightages, those funds have a high overlap.
Here is the simple way to think about it. Having more funds does not automatically mean having more diversification. If the underlying stocks are the same, you are simply paying multiple fund managers to give you the same exposure.
According to PrimeInvestor, a well-known financial research platform, mutual fund portfolio overlap is most common among funds in the same SEBI category, as each category limits where a fund can invest. For example, -cap funds must invest at least 80% of their assets in the 100 stocks by market capitalization. With such a small pool, two cap funds from different fund houses will always have many of the same stocks.
Why Does Mutual Fund Overlap Happen?
Let’s break it down. There are three main reasons overlap builds in a portfolio:
1. Limits on the investable universe due to SEBI category restrictions.
In 2018, SEBI standardized mutual fund categories, and funds had to be “true to label.” A cap fund can’t buy small-cap stocks to differentiate itself. A mid-cap fund must invest at least 65% in shares ranked between 101 and 250 by market capitalization. This limitation means that funds in the same category fish in the same small pond.
2. Investors purchase multiple funds in the same category.
This is the most frequent mistake. A lot of investors have two or three cap funds, thinking they’ve spread their risk. What they have actually done is buy the same basket of blue-chip stocks three times over.
3. Popular stocks show up in many categories.
A stock like Reliance Industries or ICICI Bank also attracts investment from cap funds, flexi-cap funds, multi-cap funds, and thematic funds. So an investor that owns one fund in each of those categories may still have the same names dominating their portfolio.
The Real Risks of High Portfolio Overlap
Next steps in understanding why this matters involve looking at what high overlap really costs you.
The risk of concentration increases, not decreases.
If you have several funds that have the same stock at heavy weights, bad news for that stock hits your whole portfolio all at once. Your “diversified” portfolio amplifies the blow rather than cushioning it.
You are charged extra for the duplicate work.
Each fund carries an expense ratio. “If two funds are doing the same thing, you are paying two sets of fees for one set of results.” Over time, this eats away at your returns.
“True diversification is lost.
The whole point of spreading the money around funds is to capture different market opportunities. If there is a lot of overlap, your portfolio is really just limited to the same small group of stocks and sectors. According to the research platform from Smallcase, there is a negative impact of stocks that don’t perform well across overlapping mutual funds, which lessens possible returns.
What Is an Acceptable Level of Mutual Fund Overlap?
There is no hard and fast rule, but here is a simple guide followed by financial planners in India.
- Below 33%: Fairly acceptable. Some overlap there will be, inevitably.
- 33% to 50%: Worth a look. You could be doubling up on exposure without getting any new diversification.
- Above 50%: A warning sign. It is probably of little use to you to hold both funds.
In the case of -cap funds, a 20-30% overlap is common, which is to be expected given the limited universe. The worry is when mid-cap, small-cap, or thematic funds show the same trends.
Now SEBI itself has drawn a regulatory line here. The regulator, in its circular dated February 26, 2026, mandated that the maximum overlap of a scheme’s portfolio with other equity schemes in the same category (excluding -cap schemes) in sectoral and thematic equity schemes should not be more than 50%. Fund houses are required to calculate this overlap every quarter and publish it on their websites every month.” Non-compliant schemes must merge within three years.
This SEBI intervention is indicative of the seriousness of the problem at the industry level.
How to Check Mutual Fund Overlap in Your Portfolio
Here’s how to know if your portfolio is in trouble.
Step 1: List all your equity funds.
Note down all the funds you hold in SIPs, lump sum investments, and ELSS. Include family members’ funds if you have a combined portfolio.
Step 2: Employ a portfolio overlap tool.
There are several free tools available in India that help you to compare holdings across two to five funds at a time. These tools are based on the latest monthly portfolio disclosures that AMFI-registered funds are required to publish. They show you what stocks they have in common, the weight of those stocks in each fund, and an overall percentage overlap.
Step 3: Compare the results with your fund categories.
A 60% overlap between two cap funds is a much bigger problem than the same figure between a cap fund and a flexi-cap fund, as flexi-cap funds can hold mid- and small-caps that truly diversify your portfolio.
Step 4: Do this check every quarter.
The funds’ portfolios change. A fund that had low overlap with another six months ago may have changed its holdings. Don’t treat this as a one-off exercise, but make it a regular review habit.
How to Reduce Mutual Fund Overlap
If your overlap analysis shows there is a problem, here’s what you can do about it.
Merge funds that belong to the same category.
If you have three cap funds, choose the one with the best long-term track record and consistent fund management. Gradually sell off your holdings using systematic withdrawal plans to avoid realizing capital gains in any one year.
Build across categories, not inside them.
A cleaner portfolio structure could be one cap fund, one mid-cap fund, one small-cap fund, and one flexi-cap fund. Each category has a different mandate, so there is a natural separation of holdings.
Mix active and passive approaches.
You can get low-cost market exposure through the Nifty 50 index fund, and you can have a portfolio where the fund manager actively selects stocks through an actively managed fund. The two approaches will probably not be perfectly mirrored.
Keep your overall count of equity funds low.
Research and financial planning both lead to the same number: four to six separate equity funds are sufficient for the majority of retail investors. Beyond that, you are almost certainly doubling up.
At Snazzy Wealth, this is where portfolio reviews begin. The team, who are AMFI-registered mutual fund distributors with more than 25 years of collective industry experience, reviews holdings across fund categories before any recommendations are made so that clients are not paying for the illusion of diversification.
Mutual Fund Overlap and SEBI’s 2026 Reforms
The 2026 SEBI circular on the categorization and rationalization of mutual fund schemes introduced key structural changes that directly address overlap at the fund level.
As per the new rules, fund houses can have a Value Fund and a Contra Fund, but the portfolio overlap between the two schemes should be less than 50%. This is checked at the time of every new fund offer and monitored quarterly.
The 50% cap on overlap for sectoral and thematic funds is applicable to all equity schemes under those categories, except for cap funds. Current schemes have three years to comply. If they fail to meet the threshold after that period, then SEBI directs them to merge with other schemes.
The regulator has also mandated all fund houses to disclose category-wise portfolio overlap levels every month. This gives investors access to publicly available data they can use to check for overlap at the scheme level before investing.
These changes enhance investor protection. They do not, however, remove the requirement for individual investors to look for overlap on a portfolio level. Two funds that individually comply with SEBI’s 50% cap can still result in excessive overlap in a single investor’s portfolio if that investor holds both, along with several other similar funds.
That is a portfolio problem, and it needs a portfolio solution.
Where to Start
Luckily, fixing mutual fund overlap isn’t difficult. You don’t have to sell everything and start over. By taking a structured review of your current holdings, getting a clear view of which funds truly cover different ground, and planning to consolidate where needed, you’ll get most of the way there.
If you’re looking for a second opinion on your portfolio structure, the team at Snazzy Wealth (snazzywealth.in) can review your existing holdings and flag where overlap may be working against your long-term goals.
Disclaimer: Investment in mutual funds is subject to market risks. Please read all scheme-related documents carefully before investing. Past performance is no guarantee of future results. This article is for educational purposes and is not investment advice. Please seek advice from a qualified financial advisor before making any investment decisions. Snazzy Wealth Pvt. Ltd. (ARN-259333) is a registered mutual fund distributor with AMFI.
Frequently Asked Questions (FAQs)
Q1. What is mutual fund overlap in simple terms?
Mutual fund overlap is when two or more funds you own invest in the same underlying stocks. You think you are spreading your money around in different investments, but you are actually buying the same companies over and over again. High overlap means less actual diversification in your portfolio.
Q2. How much mutual fund overlap is acceptable in an Indian portfolio?
Some overlap is normal and inevitable, especially for -cap funds where the investable universe is limited. Overlap below 33% is generally ok. When two funds in the same category are over 50%, that’s a strong signal to consolidate.
Q3. How can I check mutual fund overlap in my portfolio?
Indian financial platforms also offer free online portfolio overlap tools. Using these tools, you can compare 2-5 equity funds and show the percentage of common holdings based on the latest monthly portfolio disclosures published by fund houses under AMFI guidelines.
Q4. Does SEBI have any rules about mutual fund overlap?
Yes. SEBI circular dated February 26, 2026, requires sectoral and thematic equity schemes to have no more than 50% overlap with other equity schemes of the same category in their portfolio. Fund houses will need to calculate this every quarter and also disclose category-wise overlap on their websites every month.Q5. How many mutual funds should I hold to avoid excessive overlap?
Most financial planners recommend having four to six different equity funds. Each fund should have a different category or mandate, such as -cap, mid-cap, small-cap, and flexi-cap. Adding more money beyond this number generally adds more overlap than diversification.
