Credit Suisse First Boston Mortgage Securities CSFB Mortgage-Backed Pass-Through Certificates Series 2004-AR4 is a security (CUSIP 22541SFA1) tracked across SEC portfolio filings. 1 registered fund positions totaling $169K via N-PORT as of 2025-07-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Morgan Stanley Mortgage Securities Trust | MORGAN STANLEY MORTGAGE SECURITIES TRUST | $169K | 2.83% |