why mortagage backed securities are called structural obligations?

reason for this second name given to these securities?

1 Answer(s)


Mortgage-backed securities exhibit a variety of structures. The most basic types are pass-through participation certificates, which entitle the holder to a pro-rata share of all principal and interest payments made on the pool of loan assets. More complicated MBSs, known as collaterized mortgage obligations or mortgage derivatives, may be designed to protect investors from or expose investors to various types of risk.