Discover the range of what might be in a portfolio with unknown contents but having certain characteristics.
Brokers may be given a description of a portfolio on which they can bid. The contents are not specified, but characteristics of the portfolio — such as sector and country weightings — are given. The brokers bid on the portfolio. Obviously they want to bid neither too high nor too low. Generating random portfolios that show a range of possible portfolios can help inform the broker.