The Scale of the Shift
The numbers tell a compelling story. In India, assets under management (AUM) in passive funds, which include index funds and Exchange Traded Funds (ETFs), have surged. As of August 2026, the total AUM for passive funds reached ₹15.42 lakh crore, more
than doubling in just three years. This represents a significant portion of the entire mutual fund industry, growing to 18% of total assets by July 2026, up from just over 10% in 2021. This rapid expansion signals a fundamental change in investor behaviour, moving from active strategies to passive ones.
So, What Are Index Funds?
Think of an index fund as an investment that buys you a small piece of the entire market. Instead of a fund manager actively picking and choosing which companies to invest in, a passive fund simply tracks a market index like the Nifty 50 or the Sensex. If a company makes up 10% of the Nifty 50, the fund allocates roughly 10% of its money to that company's stock. The goal isn't to outperform the market, but to mirror its performance as closely as possible. This approach removes the guesswork and the reliance on a manager's skill.
The Allure of Lower Costs
One of the most powerful arguments for passive investing is its low cost. Actively managed funds employ teams of analysts and managers, and their trading activity incurs costs, all of which are passed on to investors through an 'expense ratio'. This fee can range from 1% to 2% annually. In contrast, since index funds are automated to just follow an index, their expense ratios are dramatically lower, often between 0.1% and 0.4%. While a 1% difference might seem small, it compounds over time, potentially leading to a significantly larger corpus for the investor over a decade or two.
The Challenge of Beating the Market
For years, the promise of active management was 'alpha'—returns that beat the market average. However, data increasingly shows this is harder to achieve than it sounds, especially in the large-cap space. The SPIVA India Scorecard, which tracks the performance of active funds against their benchmarks, consistently reveals that a majority of active large-cap fund managers fail to outperform the index over the long term. The Year-End 2025 report found that 75% of active large-cap funds underperformed their benchmark. As investors become more aware of this data, many are concluding it’s more prudent to simply match the market's return at a lower cost.
Simplicity, Transparency, and Support
Passive investing offers a straightforward, disciplined approach that appeals to modern investors. It reduces the emotional temptation to buy or sell based on market noise. Furthermore, the regulatory environment has become more supportive. The Securities and Exchange Board of India (SEBI) has introduced measures to ease compliance for passive funds, aiming to foster their growth and reduce expenses for investors. This includes simplified regulations, known as 'MF Light,' designed to encourage more fund houses to launch passive products. The growing variety of available index funds, from broad market and sectoral to international and factor-based funds, gives investors more choice than ever.
Are There Any Downsides?
Despite its advantages, passive investing is not without its limitations. By design, an index fund will never beat the market; it will only deliver the market's return, minus a small tracking error. During a market downturn, an index fund will fall along with the market, as it lacks a fund manager who can shift to more defensive assets like cash. The risk of poor stock selection is replaced by broad market risk, meaning if the entire market performs poorly, so will your investment. Therefore, a diversified portfolio may still benefit from a mix of active and passive strategies, depending on an investor's goals and risk appetite.
