Table of Content
We are starting a new series on the best mutual funds to invest in for 2027. Each week, we will pick one mutual fund category, define our selection criteria and compare funds based on these parameters. We will then eliminate funds that do not meet our criteria, step by step, until we are left with the best options in that category.
In our first edition, we are starting with Large-Cap Funds.
If you’re starting to build a long-term equity portfolio, a large-cap fund is often a sensible place to begin. Under SEBI rules, these funds must put at least 80% of their money into the shares of India’s 100 largest listed companies by market value.
These companies are established industry leaders with strong brands, strong balance sheets, extensive distribution networks and large customer bases. Their dominance is also visible in earnings. In FY26, the top 100 companies (Nifty 100) accounted for 71% of the combined profits of India’s 500 largest listed companies (Nifty 500).
They are also more stable and less volatile than mid- and small-cap companies. Over the last ten years ended September 2025, the Nifty 100 recorded annualised volatility of 16.18%, compared with 17.55% for the Nifty Midcap 150 and 19.24% for the Nifty Smallcap 250.
For investors who prefer relatively lower volatility and more stability in their equity portfolio, large-cap funds can be a suitable option.
Coming to Fund Selection
Step 1: Should You Choose an Active or Passive Large-Cap Fund?
As of September 2026, India had 35 actively managed large-cap mutual funds, managing nearly ₹3.90 lakh crore.
The idea behind active investing is simple. A fund manager studies businesses, selects companies with better growth prospects and adjusts the portfolio to generate higher returns than the benchmark. If the manager consistently delivers higher returns, paying an additional fee makes sense.
But how many active fund managers have actually beaten the index over the long term?
According to the SPIVA India Mid-Year 2026 report, 74% of active large-cap funds underperformed their benchmarks over the last 10 years.
The problem becomes even more interesting when we look at funds that have performed well in past. Only 21% of equity mutual funds ranked among the top 25% over a five-year period maintained that position during the following five years.
| Period | Funds underperformed |
| 1 year | 79% |
| 3 years | 80% |
| 5 years | 85% |
| 10 years | 74% |
The difference is also visible in returns. Over the last ten years, actively managed large-cap funds generated an average annual return of 12.15%, compared with 13.78% for the benchmark.
Why Is Beating the Index So Difficult?
One reason active large-cap funds struggle to beat the index is their limited investment universe. SEBI requires them to invest at least 80% of their assets in India’s 100 largest companies. These stocks are also closely tracked by institutional investors, foreign funds and analysts, making it difficult for fund managers to consistently find opportunities that others have missed.
This is reflected in their portfolios. A June 2026 study found that active large-cap funds had an average portfolio overlap of 58% with the Nifty 50, rising to 64% for the ten largest funds by AUM. At the sector level, the overlap was even higher at around 90%. This means only 42% of an average fund’s portfolio, or 36% for the largest funds, actually differs from the index.
Higher costs make it even harder. As of September 2026, active large-cap direct plans had a median expense ratio of 1.06%, compared with just 0.24% for Nifty 50 index funds, a difference of ~0.8% annually.
Now, suppose an active fund has 60% portfolio overlap with the Nifty 50. The remaining 40% must outperform the corresponding index exposure by around 2% every year just to recover this extra cost. Only returns above that would create additional value for investors.
With such high portfolio overlap and higher costs, consistently beating the index becomes difficult. This is why we prefer low-cost index funds for large-cap investing.
So, all 35 active funds are eliminated in Step 1.
Step 2: Which Index Should You Choose for Index Funds?
Now that we have decided to invest through passive funds, the next step is choosing an index to track.
India has four major large-cap indices: Sensex, Nifty 50, Nifty 100 and Nifty Next 50.
| Index | No. of companies | 5Y CAGR | 10Y CAGR |
| Sensex | 30 | 5.43% | 11.35% |
| Nifty 50 | 50 | 6.37% | 11.47% |
| Nifty 100 | 100 | 7.10% | 11.70% |
| Nifty Next 50 | 50 | 11.40% | 12.90% |
Why Are We Eliminating Nifty 100 and Nifty Next 50?
The Nifty 100 combines the Nifty 50 and the Nifty Next 50. Although it includes 100 companies, around 81% of its weight comes from Nifty 50 companies, leaving just 19% for the remaining 50 companies.
As a result, both indices behave almost identically, with a five-year return correlation of 0.99. Nifty 100 also had slightly higher annualised volatility of 14.10%, compared with 13.82% for Nifty 50. We believe adding another 50 companies is not adding much additional value and creating unnecessary diversification.
Nifty Next 50 delivered a higher 10-year CAGR of 12.9%, compared with 11.5% for Nifty 50. Its top ten companies also account for just 34% of the index, compared with 52% for Nifty 50, providing better diversification.
But this comes with higher volatility and frequent portfolio changes. During the March and September 2026 index reviews, 11 companies were replaced in Nifty Next 50, compared with just one in Nifty 50. This means 22% of its constituent slots changed in a single year.
For a core large-cap portfolio, we prefer indices with relatively lower volatility and stable holdings. Nifty 100 offers limited additional diversification, while Nifty Next 50 has higher volatility and more frequent changes in its constituent companies.
Based on these factors, we are eliminating both Nifty 100 and Nifty Next 50, leaving us with Sensex and Nifty 50.
Coming to Sensex vs Nifty 50
Sensex has 30 stocks compared with 50 in Nifty 50.
| Parameter | Sensex | Nifty 50 |
| 5-year CAGR (TRI) | 5.43% | 6.37% |
| 10-year CAGR (TRI) | 11.35% | 11.47% |
| Top 3 stocks' weight | 32.80% | 27.00% |
| Top 10 stocks' weight | 63.70% | 52.30% |
| Financial services weight | 40.00% | 37.50% |
As of September 2026, all 30 Sensex companies were also part of Nifty 50, accounting for approximately 82% of its total weight. The remaining 20 companies together received just 18%. So, for every ₹100 invested in Nifty 50, around ₹82 already goes into companies present in Sensex.
Over the ten years ended September 2026, Sensex delivered 11.35% CAGR, compared with 11.47% for Nifty 50, a difference of just 0.12% annually.
Volatility has also been almost identical. Over the ten years ended August 2026, Sensex recorded annualised volatility of 16.2%, compared with 16.1% for Nifty 50. Their return correlation was also around 0.99, meaning both indices generally moved together.
Even rolling returns show a similar trend. A study covering five-year rolling returns from September 2005 to June 2026 found that Sensex delivered a median return of 13.5%, compared with 13.3% for Nifty 50. The worst five-year return was also slightly better for Sensex at -1.0%, against -1.6% for Nifty 50.
So, despite holding 67% more companies, Nifty 50 has historically delivered almost the same returns and volatility as Sensex. The additional 20 companies provide broader diversification, but they’ve made little difference to long-term performance.
For our core large-cap portfolio, we believe 30 established companies provide sufficient diversification
That’s why we prefer Sensex over Nifty50.
Step 3: Selecting the Right Index Fund
After selecting Sensex 30 as our preferred index, we are left with 12 index mutual funds tracking it.
All these funds invest in the same 30 companies. So, unlike active funds, where stock selection makes a difference, the objective here is to find a fund that delivers returns as close to the Sensex TRI as possible, at a low cost.
We will eliminate funds based on their operating history and, then compare the remaining funds on their tracking performance and expenses.
1. Minimum 10 Years of Operating History
A 10-year period helps us judge long-term consistency across market cycles.
A longer operating history allows us to examine how consistently it has tracked the index through different market conditions, including corrections, periods of volatility and changes in index constituents.
Only four funds have a 10-year history.
| HDFC BSE Sensex Index Fund |
| LIC MF BSE Sensex Index Fund |
| Tata BSE Sensex Index Fund |
| Nippon India Index Fund – BSE Sensex Plan |
2. Comparing Tracking Performance and Expenses
For this comparison, we have considered ten-year returns, three-year and five-year tracking differences, expense ratio and tracking error.
| Parameter | HDFC | Nippon India | Tata | LIC MF |
| QAAUM (₹ Cr.) | 8,484 | 925 | 386 | 91 |
| 10Y return (CAGR) | 11.00% | 11.02% | ~10.89% | ~10.65% |
| 3Y tracking difference | -0.27% | -0.27% | -0.38% | -0.53% |
| 5Y tracking difference | -0.27% | -0.25% | -0.37% | -0.46% |
| Direct expense ratio | 0.22% | 0.21% | 0.33% | 0.66% |
| Tracking error | 0.04% | 0.03% | 0.12% | 0.16% |
Tata and LIC MF have higher expense ratios, which are also reflected in their tracking performance. Their five-year tracking differences were -0.37% and -0.46%, compared with -0.27% for HDFC and -0.25% for Nippon India.
Their ten-year returns have also been relatively lower. HDFC and Nippon delivered around 11% annually, compared with approximately 10.89% for Tata and 10.65% for LIC MF.
Eliminated: Tata and LIC Mutual Funds
Both HDFC and Nippon India have tracked Sensex closely over the long term. Over ten years, Nippon India delivered 11.02% CAGR, compared with 11.00% for HDFC. Its five-year tracking difference was also marginally better at -0.25%, against -0.27% for HDFC.
The main differences are their size and operating history. HDFC has a much larger AUM of ₹8,484 Cr., compared with Nippon India’s ₹925 Cr. It also has a longer track record, having launched in 2002, compared with Nippon India, which launched in 2010.
Since both funds have competitive expense ratios and nearly identical tracking performance, we prefer HDFC for its larger AUM and longer operating history.
Our Preferred Fund: HDFC BSE Sensex Index Fund
We have recommended HDFC BSE Sensex Index Fund in our 2024, 2025 and 2026 editions.
| Fund | 2024 | 2025 | Jan–Sep 2026 |
| HDFC BSE Sensex Index Fund | 9.16% | 10.12% | -14.37% |
| Nippon India BSE Sensex Index Fund | 9.16% | 10.11% | -14.33% |
| Sensex TRI | 9.49% | 10.38% | -14.20% |
HDFC has consistently delivered returns close to Sensex TRI and almost similar to Nippon. Given its long operating history, significantly larger AUM and consistent tracking performance, we continue to prefer HDFC BSE Sensex Index Fund for long-term investing.
Disclaimer
This content is intended for educational and informational purposes only and should not be construed as investment advice or a recommendation to invest in any mutual fund scheme. Finology Technologies Private Limited is an AMFI-registered Mutual Fund, ARN: 358628. Investors should assess their financial goals, risk appetite, and investment horizon before investing. Past performance does not guarantee future returns. Please read all scheme-related documents carefully before investing.
Mutual Fund investments are subject to market risks. Read all scheme-related documents carefully.