Passive Fund
A passive fund is a mutual fund or ETF that replicates the composition and weightings of a specified market index — such as the Nifty 50, Nifty 500, or Nifty Next 50 — without active stock selection, aiming to deliver returns that closely mirror the index's performance before fees.
Passive investing in India experienced a structural inflection point in the late 2010s and accelerated sharply through 2020–24. The Employee Provident Fund Organisation (EPFO) began deploying its equity corpus exclusively through passive ETF products — specifically the Nifty 50 ETF and Sensex ETF. This created massive, consistent inflows into passive vehicles and validated the institutional credibility of the approach. By 2024, passive fund AUM in India had crossed Rs 10 lakh crore, representing approximately 15–18% of total mutual fund industry AUM — a dramatic increase from less than 5% in 2015.
The defining characteristic of a passive fund is index replication. The fund manager's primary job is to minimise tracking error — the deviation of the fund's returns from the index's returns — rather than to beat the index through active stock picking. This is accomplished by holding the same securities in the same proportions as the index, rebalancing mechanically when the index composition changes (during periodic index reconstitutions), and reinvesting dividends promptly.
In India, the passive fund universe extends well beyond Nifty 50 and Sensex index funds and ETFs. It includes Nifty Next 50, Nifty Midcap 150, Nifty Smallcap 250, sectoral and thematic indices (Nifty IT, Nifty Pharma, Nifty Bank, Nifty Infrastructure), factor indices (Nifty 50 Value 20, Nifty Alpha 50, Nifty Quality Low Volatility 30), international indices (Nasdaq 100, S&P 500), debt indices (Nifty SDL, Nifty G-Sec), and gold. This breadth of available passive products means investors can theoretically build a complete, globally diversified portfolio using only passive instruments.
The cost advantage of passive funds is their primary selling point. Expense ratios for Nifty 50 index funds from major AMCs range from 0.10% to 0.20%, compared to 1.0–2.0% for comparable actively managed large-cap funds. The SPIVA India Scorecard (published by S&P Dow Jones Indices) has repeatedly shown that over 5–10 year periods, a majority of actively managed Indian large-cap funds underperform the Nifty 50 after accounting for fees, providing empirical support for the passive approach at least in the large-cap segment.
One nuance in passive investing is the distinction between index funds and ETFs. Both replicate an index, but ETFs trade on exchanges in real-time at market prices (which may diverge from NAV), while index funds are purchased and redeemed at end-of-day NAV. For retail SIP investors, index funds are typically more convenient; for large investors and institutions, ETFs offer intraday flexibility and are often lower cost.