Your home — or, more specifically, your home loan — could be part of someone's investment strategy. In fact, your mortgage loan could end up as part of several different kinds of investment tools. At some point, after you closed on your house, that mortgage likely took on a new life somewhere far beyond the walls of the mortgage lender that issued the loan. That's because of something called mortgage-backed securities (MBS). What are mortgage-backed securities? Mortgage-backed securities are bundles of ...