Limited Purpose Trust Company

A trust represents a type of legal construction. It's basically a way to set aside some collection of assets; the items aren't controlled by a person anymore. Instead, they're controlled by the trust.

A limited purpose trust is a special type; it's set up by the government to perform some specific purpose.

New York's Depository Trust Company is often given as an example. It acts as a depository (hence the name) for securities for banks and other financial institutions.