Portfolio Overlap Tool

What is Portfolio Overlap in Mutual Funds?

Portfolio overlap is when two or more mutual funds you hold invest in the same company's stock. If you own a Large Cap fund and a Flexi Cap fund, there's a good chance both of them hold Reliance, HDFC Bank, or Infosys — you're just paying two fund managers to own the same thing twice.

• Overlap is measured as a percentage — a 40% overlap means 40% of Fund A's portfolio is also present in Fund B.
• It doesn't just happen between two funds — if you hold 4–5 funds, the combined overlap can be surprisingly high.
• Overlap by itself isn't dangerous, but it silently kills your diversification without you realizing it.
• The only way to know your actual overlap is to compare holdings side by side — which is exactly what a mutual fund overlap calculator does.

Why Does Portfolio Overlap Matter?

Most investors think they're diversified because they hold multiple funds. They're not — they're just paying higher expense ratios for the same set of stocks. Portfolio overlap is the hidden reason why your "diversified" portfolio behaves like a single concentrated bet during a market crash.

• If two funds have 60% overlap, a fall in common stocks hits you twice — once in each fund.
• You end up paying two expense ratios for returns that could have come from one fund.
• High overlap reduces the actual number of unique companies in your portfolio — your real diversification is far lower than the number of funds suggests.
• Sector concentration compounds this — many equity funds are heavily weighted in BFSI and IT, making cross-fund overlap extremely common in Indian mutual funds.

This is the reason why mutual fund portfolio analysis is very important and needs to be done on a regular basis.

How is Overlap Calculated?

Overlap is calculated by comparing the stock-level holdings of two funds and finding the common stocks, weighted by the allocation in each fund. Every mutual fund in India discloses its full portfolio every month — this is the raw data that powers any overlap analysis.

• The simplest method counts the number of common stocks as a percentage of total unique stocks across both funds.
• A more accurate method weights each common stock by its portfolio percentage — so a stock with 8% weight in both funds contributes more to the overlap score than one with 0.5% weight.
• MFScope's fund overlap tool uses the weighted overlap method, which gives you a more realistic picture of how much your money is actually doubled up.
• You can calculate overlap every month when new portfolio disclosures are published.

What is a Good Overlap Percentage?

There's no universal rule about what a good overlap percentage should be, but here's a practical framework that most experienced investors use:

• Under 30% — Healthy. The two funds are meaningfully different and complement each other.
• 30–50% — Moderate. Keep an eye on it, but not alarming if the fund mandates are genuinely different (e.g. Large Cap + Small Cap).
• 50–70% — High. You're likely getting redundant exposure. Consider replacing one fund or consolidating.
• Above 70% — Very high. You're essentially holding the same fund twice. One of them should go.

Category matters too — a 50% overlap between two Large Cap funds is a problem; a 50% overlap between a Large Cap and a Multi Cap fund is expected and less concerning.

How to Use the MFScope Overlap Tool?

MFScope's free portfolio overlap tool is built to give you a clear, no-jargon picture of how much two funds share. No login, no signup — just results.

• Go to the Overlap page and search for your first fund by name or AMC.
• Select the second fund the same way.
• Hit "Analyze Funds" — the tool fetches the latest disclosed portfolios for both funds and runs the comparison instantly.
• You'll see the overall overlap percentage, the list of common stocks with their weights in each fund, unique stocks in each fund, and a sector-level concentration view.
• The data is sourced directly from AMFI portfolio disclosures and updated every month after new portfolios are published.
• You can try multiple fund combinations without any limit — it's completely free.

How to Reduce Portfolio Overlap?

Once you've identified high overlap using our fund overlap tool, the fix is usually straightforward. Here are the options you have:

• Replace one fund — if two funds overlap heavily, check which one has the better long-term track record and drop the other.
• Switch categories — overlap between two Large Cap funds is almost inevitable. Mixing categories (Large Cap + Mid Cap, or Large Cap + International) naturally reduces overlap.
• Consolidate — instead of holding 5 funds with high cross-overlap, holding 2–3 well-chosen funds often gives you better real diversification.
• Use a Flexi Cap or a Multi Asset as your core — a single Flexi Cap or Multi Asset fund covers all market caps and asset classes.
• Add a focused thematic or sector fund if you want targeted exposure, rather than multiple diversified funds that end up overlapping.
• Recheck overlap every 6 months — fund managers rebalance portfolios, and a fund that had low overlap with another a year ago might look very different today.

Overlap vs Diversification — What's the Difference?

People often confuse overlap and diversification, but they're actually measuring different things.

• Diversification is about spreading risk across different asset classes, sectors, geographies, and market caps — it is the broader idea.
• Overlap is the specific measure of how many stocks two funds have in common — one factor that can undermine diversification.

You can have a "diversified" portfolio on paper — Large Cap, Mid Cap, Flexi Cap, ELSS — and still have 65% overlap if all four funds hold the same top 20 stocks. True diversification means your funds are exposed to different companies, sectors, and themes — not just different fund names. Using a fund overlap finder like MFScope is the fastest way to check whether your diversification is real or just nominal.

Frequently Asked Questions (FAQ)