20120116993 | INVESTMENT MANAGEMENT SYSTEM AND METHOD - Investment management systems and methods are disclosed that solve an objective function subject to certain investment constraints to calculate a set of assets for an investment portfolio. In certain embodiments, the systems and methods comprise selecting from a plurality of assets a set of assets that improves net expected returns over a current set of assets in a portfolio. The systems and methods use asset-asset interaction decoupling techniques to eliminate matrix-inversion programming. In certain embodiments, with a function comprising net expected returns of the assets, a portfolio constraint, and a Lagrange multiplier, one or more correlations between assets can be removed such that each asset can be processed independently of other assets. | 05-10-2012 |