1. At Salomon, Parseghian headed trading of collateralized mortgage obligations, the custom-made bonds cut from bundles of home mortgages.

2. Borrowers may be asked to collateralize the lians.

3. "I got nothing because I wasn't willing to collateralize it with my house," Frey said.

4. Margin Account is a lending agreement where you pay interest for the right to collateralize your securities. Please exercise caution when trading on margin.

5. The problem can only be addressed with a standardized plan that must work both for whole mortgages held by banks, and mortgages that collateralize mortgage-backed securities (MBS).