How to Read a Mutual Fund Factsheet: Every Number Decoded
AMCs publish a factsheet every month — a dense document full of numbers that most investors never open. But buried in that factsheet are some of the most useful signals for evaluating your fund manager's quality. You don't need a finance degree to read it. You need to know which seven numbers matter and what they're telling you.
The Seven Numbers That Actually Matter
1. AUM (Assets Under Management)
The total value of investments managed by the fund. For equity funds: check if AUM is appropriate for the fund's category (see the fund-size filter in our SIP guide). For debt funds: larger AUM is generally better — it signals stability and lower redemption risk.
2. NAV (Net Asset Value)
The per-unit price of the fund, published daily. A higher NAV doesn't mean the fund is expensive or a lower NAV doesn't mean it's cheaper — NAV only tells you the price per unit, not the fund's quality. A fund with NAV ₹500 is not "expensive" vs a fund at ₹15. Compare performance, not NAV.
3. Expense Ratio (TER)
Annual cost deducted from your returns daily. Check that Direct plan TER is significantly lower than Regular plan TER. For the same fund category, prefer lower TER — two funds with the same gross return but different TERs deliver different net returns to you permanently.
4. Standard Deviation
Measures how much the fund's monthly returns fluctuate around the average. Higher standard deviation = more volatile fund. A large-cap fund with SD of 18% is significantly more volatile than one with SD of 14%. If you're risk-averse, prefer lower SD for the same category.
5. Sharpe Ratio
Return per unit of risk. Calculated as: (Fund return − Risk-free rate) ÷ Standard Deviation. Higher Sharpe ratio = better risk-adjusted return. A fund earning 15% with Sharpe of 1.2 is better than one earning 18% with Sharpe of 0.8 — the latter is taking disproportionate risk for slightly higher return.
| Sharpe Ratio | Interpretation |
|---|---|
| Below 0.5 | Poor — returns don't justify the volatility |
| 0.5–1.0 | Acceptable — moderate risk-adjusted performance |
| 1.0–2.0 | Good — solid risk-adjusted returns |
| Above 2.0 | Excellent — high return for risk taken |
6. Alpha
Excess return generated by the fund manager above the benchmark. If Nifty 50 returned 12% and your large-cap fund returned 14.5%, alpha is +2.5%. Positive alpha consistently delivered is the clearest signal of fund manager skill. Check rolling 3-year and 5-year alpha — not just the last year's alpha.
7. Portfolio Turnover Ratio
How frequently the fund buys and sells stocks, expressed as a percentage per year. 50% turnover means the equivalent of the full portfolio was bought/sold in 2 years. High turnover (above 100%) means the fund manager is trading actively — which generates higher transaction costs and potentially higher STCG tax events within the fund. For long-term buy-and-hold strategies, prefer funds with turnover below 50%.
What the Top Holdings Tell You
Look at the top 10 holdings and their concentration. If the top 3 stocks represent 30%+ of the portfolio, this is a high-conviction (and high-risk) fund. If no single stock exceeds 5%, the fund is well-diversified. Neither is inherently better — but know what you own before investing.
FAQ
Where can I find mutual fund factsheets?
Every AMC publishes monthly factsheets on their website — search "[AMC name] factsheet" or check their "Downloads" section. Value Research, Morningstar, and Kuvera also aggregate this data in a more readable format.
Should I switch funds if the Sharpe ratio falls?
A single month's decline in Sharpe ratio means nothing. Look at 3-year trailing Sharpe ratio and compare it to the fund's own history and category peers. Consistent decline over 2+ years, combined with underperformance vs benchmark, warrants a review.
Is a fund with higher AUM always safer?
For debt funds: generally yes. For equity funds: not necessarily. Mid-cap and small-cap funds can suffer from capacity constraints at high AUM. A ₹25,000-crore small-cap fund can't take meaningful positions in genuinely small stocks without moving markets against itself.
