The firms provide independent advisors another route to transacting and managing alternative investments. : Goldman Sachs spinoff Simon Markets has announced a partnership with order management system provider +Subscribe. The integration is meant to provide independent advisors with a marketplace for managing all their alternative investment fund activities on a single platform. And the options range from structured products and annuities to investments in hedge funds, private equity, venture capital and real estate funds. The two firms provide advisors with the technology to make managing client portfolios simpler and more efficient.