Information Ratio Formula:
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The Information Ratio (IR) measures a portfolio manager's ability to generate excess returns relative to a benchmark, but also considers the consistency of the performance. It shows the excess return per unit of risk taken relative to the benchmark.
The calculator uses the Information Ratio formula:
Where:
Explanation: The numerator represents the active return (portfolio return minus benchmark return), while the denominator represents the risk taken to achieve that active return.
Details: The Information Ratio is crucial for evaluating investment managers. A higher IR indicates better risk-adjusted performance relative to the benchmark. It helps investors compare managers who follow similar strategies.
Tips: Enter all values as decimals (e.g., 0.08 for 8%). Tracking error must be greater than zero. The result is unitless - higher values indicate better risk-adjusted performance.
Q1: What is a good Information Ratio?
A: Generally, an IR of 0.40-0.60 is considered good, 0.61-1.00 is very good, and above 1.00 is excellent.
Q2: How is Information Ratio different from Sharpe Ratio?
A: Sharpe Ratio compares returns to risk-free rate, while IR compares to a benchmark. Both measure risk-adjusted returns but with different references.
Q3: Can IR be negative?
A: Yes, if the portfolio underperforms the benchmark. A negative IR indicates poor risk-adjusted performance.
Q4: What time period should be used?
A: Typically calculated using annualized returns and tracking error over 3-5 years for meaningful results.
Q5: What are limitations of IR?
A: It assumes normal distribution of returns and doesn't account for tail risk. Also sensitive to the choice of benchmark.