Credit Suisse First Boston Mortgage Securities Credit Suisse First Boston Mortgage Securities Corp is a security (CUSIP 22540VTZ5) tracked across SEC portfolio filings. 1 registered fund positions totaling $211K via N-PORT as of 2025-07-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Morgan Stanley Mortgage Securities Trust | MORGAN STANLEY MORTGAGE SECURITIES TRUST | $211K | 3.55% |