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Is there a way to calculate manager's contribution to total asset class information ratio, (or total excess return divided by benchmark risk squared) given the following inputs:Manager's information Ratio = Average(Manager returns - Manager Benchmark returns)/Std.Dev (Manager returns - Manager Benchmark returns)Total Asset Class information ratio = Average(Weighted Manager returns - Asset Class Benchmark returns)/Std.Dev (Weighted Manager returns - Asset Class Benchmark returns) I also have the manager correlations and allocations.Thanks

I think Information ratio is a term used in the book called Active Portfolio Management, but I’m not too sure.What you wan to do is attribution analysis. This tells you about the skill of the manager (if that is what you are looking for). To do a proper analysis you need the list holdings for the period in question.

Thanks for the reply. Please see the attached file. I am looking for a way to calculate individual manager's contribution to the total information ratio (highlighted in red color - in sheet named "Calc")Thanks.

Sorry..Here's the correct file.

SudhakarI’m sorry this is not field of expertise and I don’t know what exactly information ratio stands for so I can’t be of much help and don’t want to misguide you. I only know a little about attribution analysis as I have used it a few times.I can tell you that attribution analysis; is primarily used to assess the skill of a fund manager. To do attribution analysis of a fund you need to know the holdings of the fund over the period in question (as mentioned before which you don’t seem to have). For example if there is a fund called XYZ and you have the list of holding this fund had over lets say a year. You can figure out if the manager has good stock picking ability or sector identification ability or both. Managers use AA to show/judge their skills and to find out why they are out performing or under performing a market/benchmark. Attribution analysis can be done for FI and Equity portfolios and certainly in a lot more detail.BTW a simple googel search of “Information ratio of fund” gives a few informative sites, one is belowInformation RatioK