Abstract: Prognostic and diagnostic information is determined about an investment portfolio through perturbing the investment portfolio with allocations to other sectors and reviewing the performance of the perturbed investment portfolios using historical data, and combining that with other factors. Relationships between one's investment portfolio and other assets, rights or liabilities can be identified by creating several modified portfolios each of which comprise a mix of the original investment portfolio and one or more of the other assets, rights or liabilities. The performance of these modified portfolios, as compared to the original portfolio over a historical period, indicates the correlation (or lack thereof) between these other assets, rights or liabilities and one's investment portfolio. By identifying these correlations, one can then take any desired action to modify one's portfolio to obtain the desired results.

Abstract: Prognostic and diagnostic information is determined about an investment portfolio through perturbing the investment portfolio with allocations to other sectors and reviewing the performance of the perturbed investment portfolios using historical data, and combining that with other factors. Relationships between one's investment portfolio and other assets, rights or liabilities can be identified by creating several modified portfolios each of which comprise a mix of the original investment portfolio and one or more of the other assets, rights or liabilities. The performance of these modified portfolios, as compared to the original portfolio over a historical period, indicates the correlation (or lack thereof) between these other assets, rights or liabilities and one's investment portfolio. By identifying these correlations, one can then take any desired action to modify one's portfolio to obtain the desired results.