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Information Ratio

   Also found in: Acronyms, Wikipedia 0.01 sec.
Information Ratio
The ratio of annualized expected residual return to residual risk. A central measurement for active management, value added is proportional to the square of the information ratio.

Information Ratio
In statistics, a measure of expected return to risk as a standard deviation. The information ratio is used in active management to gauge a manager's performance against some benchmark. See also: Manager Universe.


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ABSTRACT Performance measures such as the Sharpe ratio and the information ratio are estimation subject to estimation error.
It introduces the beliefs, risks and processes of equity portfolio management, then covers portfolio theory, risk models and analysis, the evaluation of alpha factors, quantitative factors, valuation techniques and creation of value, multifactor alpha models, portfolio turnover and the optimal alpha model, advanced modeling, factor timing models, portfolio constraints and information ratios, transaction costs and portfolio implementation.
Among these measures, Goodwin's (1998) information ratio (IR) was developed more recently while measures developed by Jensen (1968), Sharpe (1966) and Treynor (1965) were based on CAPM.
 
 
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