AUM
Assets Under Management (AUM) refers to the total market value of all investments managed by a mutual fund scheme or an Asset Management Company at a given point in time. As of early 2025, the Indian mutual fund industry's total AUM crossed Rs 67 lakh crore, reflecting a decade of sustained retail participation.
AUM, or Assets Under Management, is the aggregate market value of all securities and cash held across all investor accounts within a mutual fund scheme or an entire AMC. It is reported monthly by AMFI (Association of Mutual Funds in India) for every scheme and serves as the primary measure of a fund house's size and market presence.
For investors, a scheme's AUM can be an important contextual indicator. Very large AUMs in mid-cap or small-cap funds can create what is known as the 'fund size problem' — a fund managing Rs 20,000 crore in the small-cap space may find it difficult to enter or exit positions in smaller companies without significantly moving their prices. This liquidity constraint can drag on performance over time. For large-cap and index funds, however, larger AUM generally indicates operational efficiency and lower per-unit costs.
AMFI publishes monthly AUM data for every scheme in India, making it easy to track how investor flows have shifted across categories. During periods of market volatility, equity fund AUMs often decline due to both negative returns and net redemptions, while liquid fund AUMs tend to rise as investors park short-term money. This data gives insight into broad market sentiment.
The expense ratio of a scheme also has an indirect relationship with AUM. As AUM grows, the fixed costs of running a scheme are spread over a larger base, which can allow AMCs to reduce the expense ratio. SEBI has mandated a tiered expense ratio structure where expense ratios must decline as AUM crosses specified thresholds — for example, equity schemes charging a maximum of 2.25% for the first Rs 500 crore of daily net assets, stepping down to 1.75% for the next slab, and so on.
Investors sometimes equate a large AUM with trustworthiness or safety, but this is an oversimplification. While large AUMs can indicate investor confidence, they do not guarantee superior future returns. Scheme selection should be based on investment objective alignment, historical risk-adjusted performance, and fund manager track record rather than AUM size alone.