Mutual Fund Research
How to research mutual funds in India — ratings, expense ratios, alpha, Sharpe ratio and rolling returns.
1. Start with Category Selection
SEBI has categorised mutual funds into Equity, Debt, Hybrid, Solution-Oriented and Other schemes. Pick a category that matches your goal and horizon. For long-term wealth creation (7+ years), large-cap, flexi-cap or index funds are appropriate. For 2–4 year goals, consider balanced advantage or multi-asset funds. Never judge a fund without first understanding which category it belongs to and what its mandate allows.
2. Expense Ratio
The expense ratio is the annual fee charged by the fund, deducted daily from the NAV. A 1% difference in expense ratio compounds dramatically — on ₹10 L over 20 years at 12% gross return, a fund with 0.1% expense ratio delivers ~₹3.7 L more than one charging 1.1%. Always prefer Direct plans over Regular plans; Direct plans save 0.5–1.5% annually since there is no distributor commission.
3. Alpha and Risk-Adjusted Returns
Alpha measures how much the fund outperformed its benchmark on a risk-adjusted basis. Positive alpha over multiple 3-year rolling windows means the fund manager is adding value, not just riding market beta. A fund may show strong absolute returns purely because its benchmark is weak — always check alpha against the correct index (e.g., NIFTY 50 TRI for large-cap funds, not price index).
The Sharpe Ratio = (Return − Risk-Free Rate) / Standard Deviation. A ratio above 1.0 is considered good. The Sortino Ratio is similar but only penalises downside volatility, making it more relevant for equity fund comparison.
4. Rolling Returns vs Point-to-Point
Point-to-point returns are misleading — a fund may look great on a 1-Jan-to-31-Dec snapshot that happens to align with its best period. Rolling returns average returns across every possible start date over a period (e.g., all 3-year windows in the last 10 years). A fund with consistently high rolling returns and low standard deviation of those rolling returns is genuinely reliable. You can calculate rolling returns on AMFI NAV data or platforms like Value Research / MF Central.
5. CRISIL and AMFI Ratings
CRISIL ranks mutual funds quarterly within peer categories (Rank 1 = top 10%, Rank 5 = bottom 30%). Rankings use rolling returns, risk measures and portfolio concentration. A Rank 1 or 2 fund consistently maintained over 8+ quarters signals structural quality. However, rankings can change — use them as a filter, not a final verdict. AMFI publishes NAV history, AUM, portfolio details and monthly factsheets for all registered funds at amfiindia.com.
6. Portfolio Concentration and Overlap
Check the top-10 holdings and their percentage of the portfolio. Concentrated bets (top 10 stocks > 60%) increase risk but can also drive outperformance in good markets. If you hold 3+ mutual funds, check for overlap — you may effectively be holding the same 20 stocks across all funds. Tools like Morningstar or Value Research show portfolio overlap analysis.
| Metric | Poor | Average | Good | Weight |
|---|---|---|---|---|
| Expense Ratio | > 1.5% | 0.8 – 1.5% | < 0.8% | High |
| Alpha (3Y) | < 0% | 0 – 2% | > 2% | High |
| Sharpe Ratio | < 0.5 | 0.5 – 1.0 | > 1.0 | High |
| Rolling Returns (3Y) | < Benchmark | Matches Benchmark | > Benchmark | Medium |
| Sortino Ratio | < 0.5 | 0.5 – 1.0 | > 1.0 | Medium |
| AUM | < ₹100 Cr | ₹100 – 1000 Cr | > ₹1000 Cr | Low |
| Fund Manager Tenure | < 2 years | 2 – 5 years | > 5 years | Medium |
| CRISIL Ranking | Rank 4 / 5 | Rank 3 | Rank 1 / 2 | Medium |