What Is SEBI's 50% Portfolio Overlap Cap?
Since February 2026, SEBI caps the overlap between a sectoral or thematic fund and the same AMC's other equity schemes at 50%, with large-cap funds excluded. Existing schemes have three years to comply. The rule doesn't touch overlap between different fund houses, so checking your own portfolio is still your job.
Here's why that matters. Say you hold three mutual funds. On paper, it looks diversified — different fund houses, different categories, different fund managers. Then you pull up the portfolio composition, and you discover two of them own almost the same top 30 stocks, with an overlap of 75–80%. This happens more often than most investors expect.
The cap is part of SEBI's new mutual fund categorisation framework. Below: what overlap means, how it's calculated, which AMCs may be affected, and how to check your own portfolio for hidden duplication.
What Is Portfolio Overlap?
Portfolio overlap measures how much of two mutual fund schemes hold the same underlying securities. If Fund A has 60% of its corpus in 15 stocks, and Fund B has 60% of its corpus in the same 15 stocks, the overlap is close to 60%. If they share only 2 stocks, overlap might be 10%.
SEBI defines overlap by comparing portfolio weights, not just the list of stocks. Two funds owning Reliance at 8% and 3% have some overlap but not a 1:1 match. The overlap metric captures how much of your money is effectively duplicated across schemes.
Overlap matters for two reasons:
- Risk: you are not diversified. A crash in the shared stocks hits both funds equally.
- Cost: you're paying two sets of expense ratios for almost identical exposure.
What SEBI's New Overlap Rules Say
- Sectoral and thematic funds within the same AMC cannot have more than 50% portfolio overlap with each other or with other equity schemes from the same AMC.
- Large-cap funds are exempt from the comparison: a sectoral or thematic fund's overlap with the same AMC's large-cap schemes is not counted, because large-cap holdings are naturally similar (SEBI circular, 26 February 2026, para 2.6.3.5).
- Fund houses can now offer both a value and a contra fund, but the overlap between them cannot exceed 50%.
- Overlap is computed quarterly using daily portfolio data.
- Existing schemes have a three-year glide path to comply.
- Non-compliant schemes may have to be merged into one.
Which AMCs Could Be Most Affected?
The table below was compiled from third-party analysis of January 2026 portfolios and could not be verified against an official source; other analyses count overlap differently (for example, Value Research found 9 of Quant's 210 in-house fund pairs and 14 of WhiteOak Capital's 78 above 50% as of 28 February 2026). From 2026, AMCs must publish category-wise overlap on their websites every month, so check your AMC's own disclosure:
| AMC | No. of Overlapping Sectoral/Thematic Funds | Highest Overlap (%) |
|---|---|---|
| Quant | 12 | 79.5% |
| WhiteOak Capital | 6 | 64.2% |
| ICICI Prudential | 6 | 60.2% |
| Union | 4 | 65.1% |
| Kotak Mahindra | 4 | 55.8% |
| Axis | 4 | 53.5% |
| Invesco | 3 | 76.2% |
| Motilal Oswal | 2 | 75.2% |
| LIC | 2 | 58.3% |
These AMCs will need to reshuffle portfolios, clarify mandates, or merge schemes over the next 36 months. If you hold several funds from these houses, especially sectoral or thematic ones, you're likely to see material changes.
How to Check Overlap in Your Own Portfolio
You can check portfolio overlap yourself using a few free tools:
- Value Research Portfolio Overlap Tool (valueresearchonline.com): enter two fund names, get percentage overlap. Free for most popular schemes.
- ETMoney and Groww app portfolio analysers: built-in overlap detection for your actual holdings.
- Kuvera and INDmoney: aggregated portfolio analytics including overlap.
- AMC factsheets: every AMC publishes monthly factsheets with top 10 holdings. Eyeball them across your funds for quick sanity checks.
Rule of thumb: if two of your funds have more than 40% overlap, you're over-paying for what is effectively a single fund position.
Worked Example: What Hidden Overlap Costs
Suppose you hold three funds, each with 75% overlap with the others:
- Fund A: ₹5 lakh, expense ratio 1.2%
- Fund B: ₹5 lakh, expense ratio 1.0%
- Fund C: ₹5 lakh, expense ratio 1.1%
Total corpus: ₹15 lakh. Total annual expense: ₹16,500. With 75% overlap between them, you are paying three fund managers for what is largely one portfolio.
Consolidating into one or two well-differentiated funds mainly improves real diversification; the fee saving is small unless you also move to cheaper direct or index plans (for example, moving ₹15 lakh from about 1.1% to 0.2% would save about ₹13,500 a year).
When High Overlap Is Acceptable
Not all overlap is bad. Some cases where overlap is structural and fine:
- Large-cap funds: the universe is only top 100 companies. All large-cap funds will naturally hold many of the same stocks.
- Index funds tracking the same index: a Nifty 50 fund from any AMC will hold the same 50 stocks in the same weights.
- Aggressive hybrid funds from different AMCs: similar style mandates produce similar holdings.
The problem is overlap within the same AMC across supposedly-different funds. That's what SEBI is targeting.
How to Build a Genuinely Diversified Portfolio
- Pick funds across different categories, not different AMCs of the same category. A large-cap + flexi-cap + mid-cap from three different AMCs is better than three flexi-caps from three AMCs.
- Mix active and passive. One index fund + one active flexi-cap + one small-cap gives structural diversification.
- Add non-equity. Gold ETF, debt fund, international fund. These don't overlap with any Indian equity fund.
- Limit sectoral exposure. No more than 10–15% of your portfolio in sectoral funds total. Adding two banking funds concentrates your risk rather than spreading it.
- Check overlap annually. Run your portfolio through an overlap tool once a year. Merge duplicates.
Common Mistakes Indian Investors Make Around Overlap
- Confusing AMC diversification with portfolio diversification. Owning HDFC, ICICI, and SBI funds doesn't diversify if they're all large-cap funds.
- Collecting "star-rated" funds from every AMC. This maximises overlap. Rating is a signal of quality, not of differentiation.
- Adding more sectoral funds to "diversify". Three banking funds = concentrated banking bet, not diversification.
- Ignoring NFO pitches. New sectoral NFOs often have 60%+ overlap with existing AMC schemes. Don't add them reflexively.
- Not using overlap tools. These are free. Use them.
Frequently Asked Questions
How often does portfolio overlap change?
Monthly, as fund managers add or trim positions. Check quarterly at minimum.
Does overlap between large-cap funds matter for me?
Not much. Two large-cap funds will inherently hold similar stocks because the universe is narrow. SEBI's 50% cap does not apply between large-cap funds; it targets sectoral/thematic funds (and value vs contra funds), and excludes their overlap with large-cap schemes.
If two funds have 70% overlap, should I sell one?
Probably yes, unless there's a specific reason to hold both (e.g., one is ELSS for the Section 123 deduction under the old regime (formerly 80C), the other isn't). Consolidating reduces cost and simplifies rebalancing.
Does overlap apply to ETFs as well?
Yes. Two ETFs tracking similar indices will have high overlap. But since ETF expense ratios are very low, the cost of overlap is minor.
Can I use overlap as a selection criterion when buying a new fund?
Yes. Before adding a new fund, check its overlap with your existing holdings. If overlap exceeds 40%, reconsider, because the new fund adds cost without adding much diversification.
What happens if SEBI forces a merger and I don't want the merged fund?
You'll get a free-exit window (typically 30 days) with no exit load. Redeem during this window and reinvest where you prefer.
What to Do About Overlap in Your Portfolio
High overlap means paying for diversification you don't actually get. SEBI's 50% cap is a welcome tightening, but the rule only covers sectoral and thematic funds within the same AMC. Your own portfolio diversification is still your responsibility. Run your funds through a free overlap tool today. If two hold 40%+ in common, consolidate. That improves your real diversification, and if you move to cheaper direct or index plans at the same time, it cuts your annual costs as well.
Run your numbers: list your funds in the mutual fund portfolio analyzer to see your category allocation and each fund's returns from AMFI NAV history.
For a quick check, list your funds in the mutual fund portfolio analyzer to see your category allocation and each fund's returns from AMFI NAV history.
