Credit Suisse First Boston Mortgage Securities Corp. Credit Suisse First Boston Mortgage Securities Corp., Series 2003-21, Class 1A4

Credit Suisse First Boston Mortgage Securities Corp. Credit Suisse First Boston Mortgage Securities Corp., Series 2003-21, Class 1A4 is a security (CUSIP 22541QPB2) tracked across SEC portfolio filings. 1 registered fund positions totaling $23K via N-PORT as of 2026-05-31.

Summary

• Issuer: Credit Suisse First Boston Mortgage Securities Corp.
• Class: Credit Suisse First Boston Mortgage Securities Corp., Series 2003-21, Class 1A4
• CUSIP: 22541QPB2
• Asset category: ABS-MBS
• 13F holders: 0
• N-PORT fund positions: 1
• N-PORT value: $23K
• N-PORT report: 2026-05-31

Top fund holders (N-PORT)

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