What Is a Nifty 100 Index Fund? A Beginner’s Guide to Passive Investing 

Choosing the right stock can feel overwhelming, given that there’s no secret formula for investment success. This is where index funds, especially those tracking Nifty 100 stocks, can help.

Introduction to Index Funds

Instead of trying to guess the potential multi-bagger stocks, what if you could get easy exposure to a part of the market? That’s the promise of passive investing via index funds. Index funds are mutual fund schemes that aim to replicate an index like the Nifty 100. This means that a Nifty 100 index fund invests in all the top 100 stocks that make up the Nifty 100 index, in the same proportions. 

Thus, passive investing is like setting your car to cruise control for the highway, rather than driving in and out of traffic. It aims to match the market’s return, rather than beating it. The Nifty 100 index is comprised of the country’s top 100 companies by market capitalization. 

How Does the Nifty 100 Index Fund Work?

When you invest in a Nifty 100 Index Fund, your money is spread across the top 100 listed Indian companies by market capitalization,[i] in the same weightage as in the Nifty 100 index, subject to tracking error. This means, if Infosys or Reliance grows (which are index constituents as of September 8^th, 2025), your fund reflects that, if they shrink, your fund shrinks too*. 

The manager isn’t taking active calls or timing a stock sale or purchase. Instead, they focus on keeping the fund as close as possible to the index, tweaking it here and there whenever the index is updated or its composition shifts. This style of investing is called passive investing. 

Benefits of Investing in a Nifty 100 Index Fund

Now that you know index fund basics, let us understand how this fund can benefit all kinds of investors:

• Diversification: A single investment in the Nifty 100 index will give access to India’s biggest 100 listed companies with solid track records: from banks to consumer brands to tech*. This variety of companies with representation across sectors ensures that correction in a few stocks or sectors does not affect the entire index. This keeps helps buffer the index from sharp market volatility. 

• Low Cost:Passive investing funds typically charge lower fees than funds that require active management. The expense ratios for index funds tend to range between 0.05%-0.5%[ii]

• Potential for Growth: The Nifty 100 brings together index heavyweights and companies that have the potential to be top 50 stocks in the future. That blend offers the potential of steady gains as younger companies move up the ladder. 

• Transparency: When you invest in Nifty 100 stocks, you know what you own.  The list is simply the constituents of the Nifty 100 index. Thus, it is easy to track changes or performance.

• Simplicity: Index funds offer an uncomplicated path into investing, without the dense financial jargon and complex data and analysis. Invest monthly via SIP and let compounding do the work for you.

Who Should Invest in a Nifty 100 Index Fund?

Here are some investor segments who stand to benefit from investing in a Nifty 100 Index Fund:

• Beginners: If decoding the market gives you a headache, this approach takes away much of the guesswork, and serves as a beginner’s guide to index funds in practice.

• Long-term investors: Those with time on their side, thinking in years and not weeks or months, have the possibility of benefitting from the investment.

• Risk-averse individuals: Not fond of seeing your investment tied up in just a few companies? The Nifty 100 stocks’ wide diversification lowers single-company risk.

If you’re among these three groups, consider exploring Axis Mutual Fund’s House of Index Funds & ETFs—a convenient gateway to passive investing, where you can also easily access Axis Nifty 100 Index Fund with a few clicks. 

FAQs

What exactly is the Nifty 100 Index?
Think of it as a snapshot of corporate India: the top 100 companies listed on the NSE, spanning over a dozen sectors. The index is updated twice a year and kept up to date with India’s economic momentum. 

Nifty 100 Index vs Nifty 50 Index: What’s the difference?
You might recognize more companies in the Nifty 50 Index. The Nifty 50 index is a select group of top 50 largest and most liquid companies listed on the National Stock Exchange (NSE). Whereas The Nifty 100 Index Fund is a comprehensive list of 100 companies that incorporate the 50 stocks on Nifty 50 as well as the Nifty Next 50 largest companies on the NSE (Nifty Next 50).[iii] This means greater diversification, potential for long-term returns, and access to fundamentally strong companies. 

What are the risks of investing in a Nifty 100 Index Fund??
No equity investment is immune from market volatility. The market can swing, and your portfolio value can swing with it. The Nifty 100’s broad base helps manage market volatility, however, it is susceptible to factors like geopolitical risk, company risk, sector risk, and more. 

Conclusion

Nifty 100 Index Fund is a competent investing tool for those seeking a simple, investment that promises a diversified portfolio, transparency, and low cost-investing. If you are a beginner or trying to align your investments with your financial goals, this fund can help ease your worries and simplify investing. By investing in the Nifty 100 index fund, you essentially get to own a large piece of the top companies in the India's corporate landscape.