Large-cap fund vs index fund in India

A large-cap mutual fund is an actively managed scheme that, under SEBI ’s categorisation circular of 6 October 2017, must invest at least 80 per cent of total assets in the equity of large-cap companies, defined as the top 100 companies by full market capitalisation listed on the National Stock Exchange and BSE per the AMFI semi-annual ranking. An index fund tracking the Nifty 50 , Nifty 100 or Sensex draws from the same universe but replicates the index by rules, holding its constituents in their weights with no stock selection. The active fund charges a higher fee for the chance of beating the index; the index fund charges a fraction of that and accepts the index return minus its cost.

The overlap between a large-cap fund’s universe and a large-cap index is high, which sets the analytical question: does the active fund’s higher expense ratio buy enough consistent outperformance, or alpha, to justify the cost over a comparable index fund? The SPIVA India scorecard answers it directly, and the answer over five and ten years has been unfavourable to active management in this segment.

The phrase “large-cap index fund” usually means an index fund tracking a large-cap benchmark, most often the Nifty 50 or Nifty 100, not a separate SEBI category. There is no SEBI “large-cap index fund” label; the fund is categorised as an index fund and happens to track a large-cap index. A Nifty 100 index fund is the passive vehicle that maps most exactly onto the SEBI large-cap universe of the top 100 companies.

SEBI categorisation

SEBI’s circular, numbered SEBI/HO/IMD/DF3/CIR/P/2017/114, fixed mutual fund categories and the market-cap definitions that separate them:

• Large-cap fund. Minimum 80 per cent in equity and equity-related instruments of large-cap companies, the 1st to 100th by full market capitalisation on the AMFI semi-annual list.
• Mid-cap company. The 101st to 250th by market cap. Small-cap company. The 251st onward.
• Index fund or ETF. A fund replicating a specific index by holding its constituents in proportion to their index weights. There is no SEBI-mandated allocation floor of the large-cap kind; the fund holds the index portfolio, whatever segment that index covers.

AMFI updates the large-cap, mid-cap and small-cap company lists semi-annually, in January and July, off six-month average full market capitalisation. The 80 per cent floor binds the active large-cap manager to the top 100; the remaining 20 per cent allows some mid-cap or cash positioning. The fuller treatment of the category sits in large-cap mutual fund in India .

Portfolio construction

The active fund’s flexibility cuts both ways. A manager can overweight high-conviction names and hold cash defensively, which creates the scope to beat the index. The same flexibility creates the scope to lag it, and it carries a fee for the privilege. The index fund forgoes both by design: it stays fully invested and tracks the benchmark, accepting the index return minus its tracking error and TER.

Expense ratio

The fee gap, roughly 0.5 to 0.9 per cent a year on direct plans, is the index fund’s structural head start. It is a certain, recurring difference, deducted whether the active manager beats the index or not. On a Rs 10 lakh holding, a 0.7 per cent gap drains about Rs 7,000 a year, and the active fund must out-pick the index by at least that much every year just to break even with the passive alternative. The mechanics of the fee and its SEBI slab limits sit in total expense ratio and TER regulation slabs , and the direct versus regular plan gap widens the cost further on regular plans.

Historical alpha record

The SPIVA India Scorecard, published twice a year by S&P Dow Jones Indices, measures the share of actively managed funds that underperform their benchmark over set horizons. For Indian Equity Large-Cap funds the benchmark is the S&P India LargeMidCap.

The SPIVA India Year-End 2024 scorecard reported the following underperformance rates for active large-cap funds against that benchmark:

• One year: about 60 per cent underperformed.
• Three years: about 75 per cent.
• Five years: about 93 per cent.
• Ten years: about 74 per cent.

The pattern lengthens with the horizon and matches the international SPIVA record: as market capitalisation rises and analyst coverage deepens, managers find it harder to generate alpha large enough to cover the higher TER. Over five years more than nine in ten active large-cap funds failed to clear the bar.

Two caveats hold. Individual active large-cap funds have beaten their benchmark over specific windows, and SPIVA measures aggregate fund populations, not any single scheme. Past underperformance of the average does not predict a specific fund’s future. The wider active-versus-passive debate across capitalisation segments sits in active equity versus passive equity in India .

Why the gap is wide in large-caps and narrower elsewhere

The five-year underperformance rate for large-cap funds, around 93 per cent in the Year-End 2024 data, is among the highest of any equity category, and the reason is the efficiency of the large-cap segment. The top 100 companies are covered by dozens of analysts, traded heavily and priced on public information that every manager sees. Finding a mispricing large enough to beat the index after a 0.5 to 1.0 per cent fee is hard when the information edge that active management depends on barely exists. The mid-cap and small-cap segments, where coverage thins and mispricings persist longer, have historically given active managers more room, though SPIVA still records majority underperformance there over long horizons too.

There is also survivorship to account for. SPIVA adjusts for funds that merged or closed over the measurement window, so the underperformance figures include funds that did so badly they were wound up, not just the survivors that remain visible on a screener today. A naive look at only the funds that exist now overstates how well active management has done, because the worst performers have already left the sample. The SPIVA correction is part of why its numbers run higher than a casual comparison of surviving funds suggests.

Tracking error and replication quality

An index fund does not perfectly equal its index; the gap is measured by tracking error, the annualised standard deviation of the daily return difference between fund and benchmark.

Low tracking error is the quality signal for an index fund. The main sources of slippage are dividend reinvestment timing, corporate-action treatment, rebalancing lag at reconstitution and the TER drag itself. A fund whose tracking error sits within a few basis points of its TER is replicating cleanly. A large-cap index fund tracking the Nifty 50 typically tracks tighter than a Nifty 100 fund, because the 50 stocks are more liquid than the Nifty Next 50 tail.

Risk and return profile

Both fund types invest predominantly in large-cap Indian equity and carry comparable market risk. In a rising market an active large-cap fund can outperform by concentrating in high-conviction positions. In a falling market the manager can hold cash or cut high-beta names to limit drawdowns, the defensive case for active management.

The index fund stays fully invested with near-zero cash drag, so it reflects the full market decline on the way down. The offset is on the way up: the low fee means it keeps more of the recovery, and the SPIVA record shows the average active fund’s defensive flexibility has not, over five and ten years, outweighed its cost.

Use within a portfolio

SEBI’s large-cap universe of the top 100 is broader than the Nifty 50 of the top 50, so an active large-cap fund may hold names ranked 51 to 100 that a pure Nifty 50 index fund excludes. An investor who wants passive exposure to that full top-100 universe holds a Nifty 100 index fund rather than a Nifty 50 fund, which closes the universe gap without taking on manager risk. An investor who wants the whole market in one holding steps out to a Nifty 500 index fund , which adds the mid-cap and small-cap segments.

The choice is not strictly binary. Some investors hold a Nifty 100 index fund as the low-cost core and add one active fund with a long, verified track record as a satellite, accepting the higher fee on a small slice in exchange for the chance of alpha. The core stays cheap; the active bet is contained.

What the fee gap costs over time

The same compounding arithmetic that favours index funds over their active peers can be made concrete. Take a Rs 10 lakh lump sum held 20 years at a 10 per cent gross return. At a 0.15 per cent index-fund TER the net return is 9.85 per cent and the balance ends near Rs 65 lakh. At a 0.85 per cent active-fund TER the net return falls to 9.15 per cent and the balance ends near Rs 57.4 lakh, a difference of about Rs 7.6 lakh. That gap is what the active fund must overcome with stock selection before it adds a rupee of value over the index fund, and the SPIVA record shows most large-cap funds did not clear it over five and ten years. The fee mechanics are detailed in total expense ratio .

How to evaluate an active large-cap fund if you still want one

An investor who wants an active large-cap fund despite the odds should set the bar where the data sets it. Look for a long track record, ideally a full market cycle of ten years or more, not a hot three-year run. Check whether the same manager ran the fund across that record, since past performance under a departed manager says little. Weigh the fund against the Nifty 100 TRI, the total return benchmark, not the price return level, and confirm the outperformance survives the fee. A fund that beats the index by less than its TER advantage has added no real value. These tests do not guarantee future alpha, but they screen out the funds whose apparent edge is fee illusion, short-window luck or a manager who has since left.

The case for active management in large-caps

The passive case is strong, but the active case is not empty, and stating it fairly matters. A manager can hold cash and cut high-beta positions ahead of a fall, which an index fund cannot, so in a sharp drawdown a defensively positioned large-cap fund can lose less than the fully invested index. The catch is that this defence has to be timed right repeatedly, and the SPIVA five-year and ten-year data shows the average manager’s timing has not, on balance, outweighed the fee. The defensive flexibility is real; the evidence that it pays after costs over long horizons is weak.

The active case is stronger where an investor can identify, in advance, a specific fund with a durable edge rather than relying on the category average. SPIVA measures the whole population, so the 93 per cent five-year underperformance figure is a statement about the field, not a verdict on every fund. A minority did beat the benchmark, and an investor who picks one of those funds and holds it captures alpha the index fund cannot. The difficulty is that past outperformance is a poor guide to future outperformance, persistence studies show top-quartile funds rarely stay top-quartile, so identifying the winner ahead of time is the hard part, not believing winners exist.

Summary comparison

Tax treatment

Both an active large-cap fund and a large-cap index fund are equity-oriented for tax, because each holds more than 65 per cent in Indian equity. The same rules apply to both:

• Long-term capital gains, on units held more than 12 months, are taxed at 12.5 per cent on gains above the Rs 1.25 lakh annual exemption under Section 112A .
• Short-term capital gains, on units held 12 months or less, are taxed at 20 per cent under Section 111A , the rate effective from 23 July 2024.

Because the tax treatment is identical, taxation does not tilt the choice between active and passive. The fee gap and the alpha record do.

See also

• Mutual funds in India
• Index funds in India
• Large-cap mutual fund in India
• Active equity versus passive equity in India
• Nifty 50 index fund
• Nifty 100 index fund
• Nifty 500 index fund
• Nifty Next 50 index fund
• Nifty Midcap 150 index fund
• Nifty Smallcap 250 index fund
• Nifty LargeMidcap 250 index fund
• Sensex index fund
• Index fund versus ETF in India
• Mutual fund versus ETF in India
• ETFs in India
• Equity ETF in India
• Nifty 50 ETF
• Tracking error in index funds
• How to select an index fund
• Total expense ratio
• TER regulation slabs
• Direct versus regular plan
• Equity mutual fund taxation in India
• Section 112A
• Section 111A
• Nifty 50 TRI
• Nifty 500 TRI
• SIP
• NAV
• Mutual fund
• How to invest in index funds on Coin
• SEBI investment management department
• AMFI
• National Stock Exchange
• BSE

External references

• SEBI
• AMFI India
• S&P Dow Jones Indices, SPIVA India
• NSE Indices
• Income Tax Department

References

1. SEBI circular SEBI/HO/IMD/DF3/CIR/P/2017/114, Categorisation and rationalisation of mutual fund schemes, 6 October 2017.
2. AMFI, Semi-annual large-cap, mid-cap and small-cap company list, updated January and July.
3. S&P Dow Jones Indices, SPIVA India Year-End 2024 Scorecard, Indian Equity Large-Cap category, benchmark S&P India LargeMidCap.
4. NSE Indices Limited, Nifty 50 and Nifty 100 index methodology.
5. Income Tax Act 1961, Sections 111A and 112A, rates effective 23 July 2024.