Form 485BPOS - Post-effective amendment [Rule 485(b)]:
SEC Accession No. 0001741773-25-003039
Filing Date
2025-08-27
Accepted
2025-08-27 09:39:07
Documents
36
Effectiveness Date
2025-08-28

Document Format Files

Seq Description Document Type Size
1 c485bpos.htm   iXBRL 485BPOS 9679896
7 ex99ilegalopinin-1.htm EX-99.I LEGAL OPININ 2597
8 ex99jotheropinin-1.htm EX-99.J OTHER OPININ 18678
9 ex99jotheropinin-2.htm EX-99.J OTHER OPININ 10647
10 ex99jotheropinin-3.htm EX-99.J OTHER OPININ 2513
12 img_1565e3ab0ee54f2.jpg GRAPHIC 20714
13 img_21022a763b274f2.jpg GRAPHIC 11271
14 img_4f700005191b4f3.jpg GRAPHIC 20041
15 img_272123e3eb184f4.jpg GRAPHIC 20328
16 img_142ce140f9084f5.jpg GRAPHIC 21757
17 img_4be2405973fb4f12.jpg GRAPHIC 22921
  Complete submission text file 0001741773-25-003039.txt   13905051

Data Files

Seq Description Document Type Size
2 c485bpos-20250827.xsd EX-101.SCH 19287
3 c485bpos-20250827_cal.xml EX-101.CAL 4931
4 c485bpos-20250827_def.xml EX-101.DEF 22905
5 c485bpos-20250827_lab.xml EX-101.LAB 81045
6 c485bpos-20250827_pre.xml EX-101.PRE 397717
40 EXTRACTED XBRL INSTANCE DOCUMENT c485bpos_htm.xml XML 569794

Series and Classes/Contracts Information:

Existing
  Status Name Ticker Symbol
CIK 0000063075      
Series S000002492   MFS Corporate Bond Fund
Class/Contract C000006711   A MFBFX
Class/Contract C000006712   R4 MFBJX
Class/Contract C000006716   B MFBBX
Class/Contract C000006717   C MFBCX
Class/Contract C000006718   I MBDIX
Class/Contract C000006720   R1 MFBGX
Class/Contract C000006722   R2 MBRRX
Class/Contract C000006723   R3 MFBHX
Class/Contract C000070424   R6 MFBKX
  Status Name Ticker Symbol
CIK 0000063075      
Series S000002495   MFS Limited Maturity Fund
Class/Contract C000006744   I MQLIX
Class/Contract C000006745   A MQLFX
Class/Contract C000006746   R4 MQLJX
Class/Contract C000006750   B MQLBX
Class/Contract C000006751   C MQLCX
Class/Contract C000006753   R1 MQLGX
Class/Contract C000006755   R2 MLMRX
Class/Contract C000006756   R3 MQLHX
Class/Contract C000119776   R6 MQLKX
  Status Name Ticker Symbol
CIK 0000063075      
Series S000002496   MFS Municipal Limited Maturity Fund
Class/Contract C000006757   A MTLFX
Class/Contract C000006758   B MTLBX
Class/Contract C000006759   C MTLCX
Class/Contract C000092113   I MTLIX
Class/Contract C000195152   R6 MTLRX
  Status Name Ticker Symbol
CIK 0000063075      
Series S000002497   MFS Total Return Bond Fund
Class/Contract C000006760   A MRBFX
Class/Contract C000006761   R4 MRBJX
Class/Contract C000006765   B MRBBX
Mailing Address 111 HUNTINGTON AVENUE 21ST FLOOR BOSTON MA 02199
Business Address 111 HUNTINGTON AVENUE 21ST FLOOR BOSTON MA 02199 18006372929
MFS SERIES TRUST IX (Filer) CIK: 0000063075 (see all company filings)

EIN.: 042535629 | State of Incorp.: MA | Fiscal Year End: 0430
Type: 485BPOS | Act: 40 | File No.: 811-02464 | Film No.: 251260469

Mailing Address 111 HUNTINGTON AVENUE 21ST FLOOR BOSTON MA 02199
Business Address 111 HUNTINGTON AVENUE 21ST FLOOR BOSTON MA 02199 18006372929
MFS SERIES TRUST IX (Filer) CIK: 0000063075 (see all company filings)

EIN.: 042535629 | State of Incorp.: MA | Fiscal Year End: 0430
Type: 485BPOS | Act: 33 | File No.: 002-50409 | Film No.: 251260468