Information ratio
InvestingDefinition
Active return divided by tracking error. Measures consistency of alpha generation per unit of active risk. Higher = better.
Top-quartile active managers: IR > 0.5. Renaissance Medallion fund: IR > 2.0 (legendary). IR is harder to game than total return because it normalizes for active risk taken.
Top-quartile active managers: IR > 0.5. Renaissance Medallion fund: IR > 2.0 (legendary). IR is harder to game than total return because it normalizes for active risk taken.
Formula
IR = (Portfolio return − Benchmark return) / Tracking error