Think of the Nifty 50 fund as a ready-made basket of 50 prominent stocks listed on the National Stock Exchange (NSE). A Nifty 50 fund gives you a way to invest in that basket through a simple mutual fund scheme.

The fund does not decide independently which companies deserve a place in the portfolio. Instead, it follows the composition of the Nifty 50 and adjusts its holdings as the index changes.

The companies represented in the index come from different parts of the Indian economy. However, they do not occupy equal positions within it. The Nifty 50 uses free-float market capitalisation to determine their weights, so some stocks have a greater influence on the index movements than others.

Nifty 50 funds may be a good investment option for you if you:

• You want to keep equity investing straightforward: Instead of building and maintaining a portfolio of individual companies yourself, you can follow an established index through one fund.
• You prefer wider sector representation: The Nifty 50 includes companies from different parts of the economy. This creates broader sector exposure than Sectoral Funds, which focus their investments on a particular sector.
• You prefer passive funds over active management: You prefer mirroring the Nifty 50 stocks instead of relying primarily on fund manager stock-selection and churn decisions, which typically have a higher expense ratio.
• You have a long-term investment horizon: Since the underlying holdings are equities, the fund's value will move in either direction over time. Consider whether those movements fit the timeline of your financial goal.

Money invested in a Nifty 50 index fund is used primarily to build a portfolio that mirrors the securities represented in the index.

As per the current categorisation by SEBI, ETFs and index funds are required to invest at least 95% of their total assets in securities of the particular index that they are tracking.

Suppose you invest Rs. 20,000 in a Nifty 50 index fund.

Now suppose the value of your investment increases by 8%:

Rs. 20,000 + (Rs. 20,000 x 8%) = Rs. 21,600

A movement in the opposite direction would work similarly. If its value falls by 8%:

Rs. 20,000 - (Rs. 20,000 x 8%) = Rs. 18,400

This calculation is only meant to demonstrate how a percentage change affects your investment. In practice, the fund's return can also differ slightly from the Nifty 50 because of expenses and the mechanics involved in tracking an index.

The 50 stocks don't contribute equally to movements in the Nifty 50. Their weights are determined using free-float market capitalisation, which considers shares that are available for public trading. A company with a larger weight can therefore have a greater influence on the movement of the index than one with a smaller weight.

Being a large company alone does not automatically secure a place in the index. Companies also need to satisfy the eligibility criteria, which consider factors such as listing history, liquidity and eligibility for trading in the futures and options segment.

This list can change as well. The National Stock Exchange reviews the Nifty 50 twice a year, with changes taking place on the last working day of March and September. A fund tracking the Nifty 50 then adjusts its portfolio to reflect the changes made to the index.

Here are some of the benefits of investing in Nifty 50 funds:

• Diversification across companies: With one fund, your money gets exposure to different companies represented in the Nifty 50, rather than being tied to the performance of just one stock.
• Exposure across sectors: Since Nifty 50 companies operate across different sectors of the economy, weakness in one business doesn't by itself determine how your entire investment performs.
• No individual stock selection: The fund builds its portfolio around the index, so that you don't have to separately research, select, and purchase all 50 stocks.
• Rules-based investing: Portfolio changes are guided by the methodology and composition of the Nifty 50, rather than individual stock calls by the fund manager.

Here are some of the risks associated with investing in Nifty 50 funds:

• Market volatility: The fund follows the market downwards as well as upwards. A passive Nifty 50 fund is not designed to move out of stocks simply because market conditions have deteriorated. A decline in its benchmark will therefore reduce your investment's value.
• No guaranteed returns: Returns are not assured. The fact that an index contains prominent companies does not guarantee that the value of the fund will increase.
• Concentration risk: Having 50 stocks doesn't mean each one affects the index individually. Stocks carrying larger weights can influence the movement of the Nifty 50 more strongly than those with smaller weights.
• Index changes: The companies represented in the Nifty 50 can change following a periodic review. When this happens, a fund following the index also needs to realign its holdings.

How can you manage these risks?

You can manage these risks by doing the following:

• Give the investment enough time: Short-term market movements can be unpredictable. Consider whether your investment horizon gives you enough room to stay invested through periods when the Nifty 50 may be under pressure.
• Spread out when you invest: A SIP allows you to invest at regular intervals instead of putting in the entire amount at one market level.
• Look beyond the NIFTY 50: The index spreads your investment across 50 companies and multiple sectors, but it still represents only one part of your portfolio. Other investments or asset classes can provide exposure beyond this index.
• Know the risk before committing your money: The scheme's Riskometer indicates its risk level. Review it alongside your own risk appetite.

While all these indices sound similar, they provide different levels of market exposure.

The important takeaway is not that one index is automatically better. They represent different slices of the market, so the underlying benchmark should match the exposure you actually want.

There are multiple Nifty 50 mutual funds to choose from. Here are a few things to consider when choosing one:

• How closely does it follow the Nifty 50: Look at the fund's tracking difference to understand how far its returns have varied from the benchmark. A smaller gap generally indicates closer tracking.
• What are you paying for the fund: Compare expense ratios across schemes. Even when two funds track the same index, differences in costs can influence the returns you ultimately receive.
• How would you prefer to invest: Nifty 50 exposure is available through Index funds as well as ETFs. The underlying benchmark may be the same, but the way you buy, sell, and hold them differs.
• Does the risk level work for you: Use the scheme's Riskometer to understand its indicated level of risk and assess whether you are comfortable with it.
• Where does it fit into your plans: Instead of choosing a fund based only on recent performance, consider the purpose of the investment, how long you expect to stay invested and how it complements the rest of your portfolio.

A Nifty 50 Index fund and a Nifty 50 ETF may follow the same benchmark, but the investing experience is different.

With an Index fund, you invest through the mutual fund route, either directly or by using an investment platform. Depending on the scheme, you can invest a lump sum or set up a SIP for regular investments.

An ETF takes the exchange route. Its units are bought and sold on the stock market during trading hours, generally using a demat and trading account.

So, while both can give you exposure to the Nifty 50, how you invest and transact is what sets them apart.

You can start investing in Nifty 50 funds on Millions in a few easy steps:

• Download the Millions app from the Google Play Store or the iOS App Store.
• Enter your details and complete your KYC.
• Log in and search for Nifty 50 mutual funds available on the platform.
• Compare details such as the underlying benchmark, expense ratio, tracking information and Riskometer.
• Select a scheme based on your investment objective, time horizon and risk appetite.
• Enter your preferred amount and choose between the available SIP or lump sum option.
• Review the investment details carefully and then complete the transaction.