When evaluating mutual funds, investors often compare a scheme’s returns with those of a benchmark index. However, earning higher returns than a benchmark does not automatically mean that a fund manager has delivered efficient or consistent performance. The Information Ratio (IR) helps investors assess how effectively a fund generates excess returns relative to the additional risk taken compared with its benchmark.
For Indian mutual fund investors, the Information Ratio is a useful tool for evaluating actively managed equity schemes. It provides a more detailed perspective than looking at returns alone and can help investors compare funds with similar investment objectives.
What Is the Information Ratio?
The Information Ratio is a risk-adjusted performance measure that evaluates the excess return generated by a portfolio relative to a benchmark, compared with the variability of those excess returns.
In simple terms, it helps answer two questions: Did the fund outperform its benchmark, and how consistently did it do so?
According to the National Institute of Securities Markets (NISM), the ratio considers both excess returns and tracking error, allowing investors to evaluate how effectively a fund has performed relative to its benchmark.
A higher positive Information Ratio generally indicates more efficient benchmark outperformance over the period measured. A negative ratio indicates that the portfolio underperformed its benchmark, while a ratio near zero suggests little excess return relative to the tracking error.
How Is the Information Ratio Calculated?
The Information Ratio is calculated by dividing a portfolio’s excess return over its benchmark by its tracking error.
[
\text{Information Ratio}=
\frac{R_p-R_b}{TE}
]
Where:
- (R_p) = Portfolio or mutual fund return.
- (R_b) = Benchmark index return.
- (R_p-R_b) = Excess return, also called active return.
- (TE) = Tracking error, which measures the variability of the portfolio’s returns relative to the benchmark.
The numerator shows whether the fund outperformed or underperformed the index. The denominator measures how much the difference between the fund and benchmark returns fluctuated over time.
For meaningful comparisons, returns and tracking error must be calculated using compatible periods and methodologies. In its January 2025 circular, the Securities and Exchange Board of India (SEBI) prescribed an Information Ratio disclosure framework for equity-oriented mutual fund schemes, with calculations based on returns relative to the scheme’s Tier 1 benchmark.
Understanding Excess Returns Over a Benchmark
Excess return is the difference between the fund’s return and the return of its benchmark over the same period.
For example, if a mutual fund earns 14% over a year while its benchmark index earns 11%, the fund has generated three percentage points of excess return.
However, excess return alone does not show how consistently the fund achieved that result. One scheme might outperform steadily, while another might experience large swings between outperforming and underperforming the index.
The Information Ratio adds this consistency-related perspective by dividing excess return by tracking error. This makes it useful when assessing whether a fund’s active investment decisions have added value relative to the benchmark.
Example of Information Ratio Calculation
Consider two hypothetical mutual funds compared with the same benchmark over the same period.
| Performance measure | Fund A | Fund B |
| Annualised fund return | 14% | 13% |
| Benchmark return | 11% | 11% |
| Excess return | 3% | 2% |
| Tracking error | 6% | 2% |
| Information Ratio | 0.50 | 1.00 |
Fund A generates three percentage points of excess return, while Fund B generates two. However, Fund B has a higher Information Ratio because its excess return is achieved with lower tracking error.
The calculations are:
- Fund A: (3% \div 6% = 0.50)
- Fund B: (2% \div 2% = 1.00)
In this illustration, Fund B has generated more excess return per unit of tracking error. That does not guarantee better future performance, but it demonstrates why the Information Ratio can reveal something that headline returns alone may miss.
How to Interpret a High or Low Information Ratio
The Information Ratio should be interpreted alongside the fund’s strategy, benchmark, and measurement period.
- Positive Information Ratio: The fund has outperformed its benchmark relative to its tracking error.
- Negative Information Ratio: The fund has underperformed its benchmark over the period measured.
- Near-zero Information Ratio: The fund has generated little excess return relative to the variability of its active returns.
- Higher positive Information Ratio: Generally indicates more efficient benchmark outperformance, especially when comparing similar funds over consistent periods.
There is no single Information Ratio that guarantees a good investment. A ratio can vary with market conditions, investment style, and the period selected. Investors should avoid judging a scheme based on one short-term reading.
Why the Information Ratio Matters to Mutual Fund Investors
The Information Ratio can help investors evaluate actively managed funds whose managers attempt to outperform a benchmark through security selection, sector allocation, or other investment decisions.
It can be useful in several ways:
Comparing similar funds: Investors can compare schemes within the same category that use comparable benchmarks and investment strategies.
Evaluating consistency: A stronger Information Ratio may suggest that outperformance has been achieved more efficiently rather than through highly variable active returns.
Assessing fund management: The ratio provides one measure of how effectively a manager’s investment decisions have added value relative to the benchmark.
Supporting long-term analysis: Reviewing the ratio across multiple periods can help investors assess whether a fund’s relative performance has been persistent or temporary. AMFI also provides Information Ratio explanations and interpretation examples for mutual fund investors.
Limitations of the Information Ratio
Although useful, the Information Ratio has limitations. It relies on historical returns and does not guarantee that a fund will outperform in the future. A fund’s investment strategy, portfolio composition, or market environment may change.
The choice of benchmark is also critical. If the benchmark does not appropriately reflect the fund’s investment objective, the resulting ratio may be misleading. Investors should therefore check the scheme’s stated benchmark and compare funds with similar mandates.
Additionally, the Information Ratio does not directly measure every investment risk, such as liquidity risk or the possibility of severe market losses. A high ratio should not replace analysis of the fund’s holdings, expenses, investment objective, and overall suitability.
Information Ratio vs. Sharpe Ratio
Both ratios assess risk-adjusted performance, but they use different reference points. The Information Ratio measures excess return relative to a benchmark and divides it by tracking error. The Sharpe Ratio compares excess return over a risk-free rate with the portfolio’s overall return volatility.
Consequently, the Information Ratio is especially relevant when evaluating benchmark-oriented active management, while the Sharpe Ratio helps assess returns relative to overall portfolio risk.
Conclusion
The Information Ratio helps investors understand how effectively a mutual fund generates excess returns over its benchmark while accounting for the variability of those returns. A higher positive ratio generally signals more efficient relative performance, but it does not guarantee future success.
For better decisions, compare the ratio across similar schemes and multiple periods, verify that the benchmark is appropriate, and examine other performance and risk measures before investing.
Frequently Asked Questions
Q. What is a good Information Ratio for a mutual fund?
There is no universal threshold. A higher positive ratio is generally favourable, but its meaning depends on the fund category, benchmark, measurement period, and calculation methodology.
Q. Does a negative Information Ratio mean a mutual fund has lost money?
No. It means the fund underperformed its benchmark over the measured period. The fund may still have delivered a positive absolute return if the benchmark performed better.
Q. How is tracking error used in the Information Ratio?
Tracking error measures the variability of the difference between fund and benchmark returns. It forms the denominator of the Information Ratio and helps show how efficiently excess returns were generated.
Q. Can the Information Ratio predict future mutual fund performance?
No. It is based on historical data and cannot guarantee future outperformance. Investors should use it alongside other financial and risk measures.
Q. Where can I find a mutual fund’s Information Ratio in India?
Investors can check fund factsheets, asset management company websites, and AMFI’s Information Ratio disclosure page. Compare schemes using consistent periods and methodologies.
Q. Is the Information Ratio more useful than the Sharpe Ratio?
Neither is universally better. The Information Ratio focuses on performance relative to a benchmark, while the Sharpe Ratio evaluates returns relative to a risk-free rate and total portfolio volatility.
