Before 2018, the world of Indian mutual funds was a bit of a free-for-all. Asset Management Companies (AMCs) could launch funds with similar names but vastly different investment strategies. A 'blue-chip' fund from one AMC might invest in completely different types of companies than another. This made it difficult for investors to compare funds and know what they were truly buying.

To solve this, the SEBI stepped in with a major re-categorization circular in 2017. The goal was simple: standardize fund categories to ensure they were 'true to label'. This created clear, well-defined buckets, forcing funds to follow specific rules about where they invest. Now, when you compare a Large-cap fund from two different AMCs, you can be confident they are fishing in the same pond of stocks.

SEBI's primary method for classifying equity funds is by market capitalization, which is a company's total market value (share price multiplied by the number of shares). This divides the stock market into three distinct segments.

A fund's name now tells you exactly where it must invest the majority of its assets. A Large-cap fund must invest at least 80% of its corpus in the top 100 stocks. The most important distinction, however, arises in funds that invest across all categories.

Multi-cap vs. Flexi-cap

This is a key structural difference introduced by SEBI. It addresses how much freedom a fund manager has.

• Multi-cap Funds: These are strictly diversified. They must invest a minimum of 25% of their assets in large-cap stocks, 25% in mid-cap stocks, and 25% in small-cap stocks. The remaining 25% can be allocated as the manager sees fit.

• Flexi-cap Funds: This is a more dynamic category. A flexi-cap fund must invest a minimum of 65% in equities, but there are no minimum allocation requirements for any specific market cap. This gives the fund manager the flexibility to move money between large, mid, and small-caps based on market conditions.

Other equity categories include ELSS (Equity Linked Savings Scheme), which have a 3-year lock-in for tax benefits, and Sectoral/Thematic funds that concentrate on a specific industry like banking or technology.

For debt funds, SEBI's classification hinges on two main factors: the portfolio's maturity profile and its credit quality. The first is measured by something called Macaulay Duration—a crucial concept for any debt investor.

The duration tells you how sensitive a fund's Net Asset Value (NAV) is to changes in interest rates. Longer duration means higher sensitivity. SEBI has created 16 distinct debt fund categories, with many defined by their duration mandate.

The second factor is credit quality. For example, a Corporate Bond Fund must invest at least 80% of its assets in the highest-rated corporate bonds (AAA). In contrast, a Credit Risk Fund must invest at least 65% in bonds rated AA or lower, taking on more risk for potentially higher returns. Gilt Funds stick to government securities, which have no credit risk.

Hybrid funds blend equity and debt, and SEBI has defined six types. The structures here are designed to meet specific investor needs.

• Balanced Advantage Funds (BAFs): These are dynamic. They can change their equity and debt allocation freely, often using a quantitative model to decide when to be aggressive (high equity) or defensive (high debt). They have no fixed allocation mandate.

• Aggressive Hybrid Funds: These are equity-oriented, required to hold between 65% and 80% in stocks.

• Arbitrage Funds: These funds exploit price differences of a stock between the cash market and the futures market. They aim to generate low-risk returns and are treated like equity funds for tax purposes if they maintain over 65% in equity.

Finally, SEBI has also defined categories for Solution-Oriented Schemes, like retirement or children's funds that come with a lock-in period, and Other Schemes, which include Index Funds and ETFs that passively track a market index like the NIFTY 50.

Before you check your knowledge, it's worth knowing about a special type of investment structure.

Let's review the key fund structures.

Understanding these SEBI-defined structures is the first step to navigating the Indian mutual fund landscape and building a portfolio that truly aligns with your financial goals.