A process for the analysis and selection of financial investments based on a comparative analysis of performance and diversification. Large data sets can be manipulated in a manner that is simple to understand and convenient to use. Historical performance data for investments can be analyzed in respect of every possible investment period using any pre-existing or personally defined quantitative measurement algorithm. The user can apply his or her personal weightings to the various performance measurements based on a combination of attribute and time period to construct a customized scoring process, based on which a comparative ranking of the investments can be created. Further, a complete universe of investments can be segmented into peer groups based on one of a number of similarity/dissimilarity criteria from which the user may choose.