Calculators · Portfolio

Mutual fund overlap calculator

Use this mutual fund overlap calculator to check how much two funds hold in common. Enter each fund's holdings to see the portfolio overlap percentage, the stocks behind it and whether the second fund adds real diversification.

WorthOS Technologies Pvt. Ltd.  SEBI Registered Investment Adviser  ·  INA000022695  ·  These calculators are for educational purposes only and do not constitute investment advice. Assumptions can change; actual returns may vary.

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Educational tools built on standard formulas. Every figure below is illustrative, computed from the inputs you enter — not a projection, recommendation or guarantee.

SIP Calculator

The future value of a monthly SIP over your chosen horizon, assuming a constant expected rate of return. Instalments are treated as invested at the start of each month.

Your inputs

Future value —
Total invested
—
Wealth gained
—
Absolute return
—
Instalments paid
—
Invested Wealth gained

Mandatory disclaimerThis calculator uses an assumed constant return rate for illustration. Actual mutual fund returns vary with market conditions and are not guaranteed. Past performance is not indicative of future results.

WorthOS Technologies Private Limited · SEBI Registered Investment Adviser · Registration No. INA000022695 (Non-Individual)

Investments in the securities market are subject to market risks. Read all the related documents carefully before investing. Registration granted by SEBI, enlistment with BSE, and certification from NISM in no way guarantee the performance of the intermediary or provide any assurance of returns to investors.

The method

How the mutual fund overlap calculator works

For every stock held by both funds, the calculator takes the smaller of the two portfolio weights. Adding those up gives the share of the portfolio the two funds have in common.

Overlap % = Σ min(weight in Fund A, weight in Fund B)

Stock names are matched loosely, so "Reliance Industries Ltd" and "Reliance Industries" count as the same holding. Use the latest monthly portfolio disclosure from each fund house for accurate weights.

Worked example (the calculator's sample funds)

HDFC Bank: 9.5% vs 7.0%
7.0%
Reliance Industries: 8.2% vs 5.5%
5.5%
ICICI Bank: 6.0% vs 4.0%
4.0%
Overlap across these holdings
16.5%

Under 30% is low overlap: the two funds are meaningfully different.

The essentials

What is mutual fund overlap, and how do you check it?

Why portfolio overlap matters

Many investors hold several funds expecting diversification, but funds in neighbouring categories often own the same large companies. High fund overlap means a second fund adds little: you are largely buying the same stocks twice and paying two expense ratios for it.

How to check mutual fund overlap

Take each fund's latest portfolio from its factsheet or monthly disclosure, enter the stocks and their weights for both funds, and read the overlap percentage. As a guide, under 30% is low, 30–50% is moderate, 50–70% is high, and over 70% suggests the two funds are close to duplicates.

What to do with the result

Overlap is one input, not a verdict. A high figure is a reason to ask what the second fund adds, such as a different category, style or market-cap mix. The mutual fund calculator projects what your SIP and lumpsum could grow to, and the XIRR calculator measures what they have actually returned.

Common questions

Mutual Fund Overlap Calculator: frequently asked questions

Still have questions? Contact us
What is mutual fund overlap?
It is the share of two funds' portfolios invested in the same stocks. High overlap means a second fund adds little diversification, because you are largely buying the same companies twice.
How do I check mutual fund overlap?
Enter each fund's holdings and weights from its latest factsheet or portfolio disclosure. The calculator matches the common stocks and adds up the smaller weight of each to give the overlap percentage.
How much overlap is too much?
As a guide: under 30% is low, 30–50% is moderate, 50–70% is high and over 70% suggests the funds are close to duplicates.
Where do I find a fund's holdings?
Every fund house publishes its schemes' portfolios each month. The fund's factsheet or portfolio disclosure lists each stock and its weight.
Does high overlap mean I should exit a fund?
Not on its own. This is an educational tool, not a recommendation. Overlap is a reason to ask what each fund adds to your portfolio, alongside costs, category and your goals.
Reviewed by Tanish Sadh, Principal OfficerWorthOS Technologies Private Limited · SEBI RIA INA000022695 · Last reviewed
SEBI disclaimerInvestment in securities market are subject to market risks. Read all the related documents carefully before investing. Registration granted by SEBI, enlistment with BSE, and certification from NISM in no way guarantee the performance of the intermediary or provide any assurance of returns to investors.

For grievance redressal, contact tanish@worthostech.com or visit our Grievance Redressal page. If unresolved, escalate through SEBI SCORES or SMART ODR.