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making sense of 100's of funds

paul sorenson wrote:
Well, your simplest first cut would be to find a good benchmark for each 
style you're interested in.  Then you can do correlations to the 
benchmark for all the funds in each style.  Funds with a very high 
correlation to the benchmark could probably be replaced more cheaply 
with index ETF's, unless they are low-fee index funds.

For risk, you need to decide which risk measures matter to you. 
variance is the most common measure of risk, but it also has many issues 
in assuming a normal distribution.  You may wish to choose a measure 
such as Sortino's Upside Potential Ratio that utilizes a return target 
called the minimum acceptable return.  Then you could stack-rank the 
funds in a given style, or across styles, by UPR to aid your choice.

I wrote a short overview of multiple Performance and Risk measures as 
the package level help for the PerformanceAnalytics package.  You could 
download the pdf documentation from CRAN, and take a look at section 
PerformanceAnalytics-package.

Regards,

   - Brian