investment orders to a brokerage system 199 in order make investments in a reference portfolio comprising etps that the computer system 100 has determined are a viable alternative for the analyzed portfolio the brokerage system 199 can be co located with the computer system 100 or located remotely and connected via communication links the brokerage system 199 may include one system or multiple systems that are operated by multiple security trading organizations in the preferred embodiment the quote database 180 the return database 185 and the fit database 190 are all separate databases managed by a commercially available computer program such as microsoft sql server 2008 r2 other embodiments in which any selections of these databases are combined to form a single database one or more of these databases are split into a plurality of smaller databases or different commercially available or open source computer programs are used to manage these databases are also possible for the purpose of the following discussion the user 160 will be synonymous with an investor either current or prospective or a non investing researcher both conducting analysis of various investment asset portfolios of interest referring to fig2 the computer program that carries out the method of the present invention.