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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 CIK#: 0000063075 (see all company filings)

State location: MA | State of Inc.: MA | Fiscal Year End: 0430
formerly: MFS FIXED INCOME TRUST (filings through 1995-02-01)
formerly: MFS FIXED INCOME TRUST/ (filings through 1995-06-29)
formerly: MFS SERIES TRUST IX /MA/ (filings through 2014-01-28)
Class/Contract: C000006730 R1 
Ticker Symbol:   MIALX
(List all Funds and Classes/Contracts for MFS SERIES TRUST IX)

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Items 1 - 40  0000063075 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-24-066447 (40 Act)  Size: 287 KB
2024-03-26 811-02464
24780994
497  Documents Definitive materials
Acc-no: 0000912938-24-000279 (33 Act)  Size: 137 KB
2024-03-15 002-50409
24752700
497J  Documents Certification of no change in definitive materials
Acc-no: 0000912938-24-000271 (33 Act)  Size: 174 KB
2024-03-04 002-50409
24714306
485BPOS  Documents   Interactive Data Post-effective amendment [Rule 485(b)]
Acc-no: 0001741773-24-000402 (33 Act)  Size: 6 MB
2024-02-27 002-50409
24682883
497K  Documents Summary Prospectus for certain open-end management investment companies filed pursuant to Securities Act Rule 497(K)
Acc-no: 0001741773-24-000403 (33 Act)  Size: 264 KB
2024-02-27 002-50409
24682888
485BPOS  Documents   Interactive Data Post-effective amendment [Rule 485(b)]
Acc-no: 0001741773-24-000402 (40 Act)  Size: 6 MB
2024-02-27 811-02464
24682884
24F-2NT  Documents Rule 24F-2 notice
Acc-no: 0001683863-24-000114 (33 Act)  Size: 8 KB
2024-01-17 002-50409
24536973
N-CEN  Documents Annual Report for Registered Investment Companies
Acc-no: 0001752724-24-001433 (40 Act)  Size: 111 KB
2024-01-11 811-02464
24528957
497  Documents Definitive materials
Acc-no: 0000912938-23-000520 (33 Act)  Size: 137 KB
2023-12-29 002-50409
231524548
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-23-289798 (40 Act)  Size: 97 KB
2023-12-26 811-02464
231511437
N-CSR  Documents Certified Shareholder Report
Acc-no: 0001683863-23-008487 (40 Act)  Size: 1 MB
2023-12-21 811-02464
231503413
497  Documents Definitive materials
Acc-no: 0000912938-23-000510 (33 Act)  Size: 290 KB
2023-12-06 002-50409
231468550
497  Documents Definitive materials
Acc-no: 0000912938-23-000502 (33 Act)  Size: 685 KB
2023-11-28 002-50409
231442049
497  Documents Definitive materials
Acc-no: 0000912938-23-000419 (33 Act)  Size: 158 KB
2023-09-28 002-50409
231286293
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-23-212465 (40 Act)  Size: 285 KB
2023-09-25 811-02464
231273236
N-PX  Documents Annual Report of proxy voting record of management investment companies
Acc-no: 0001193125-23-223243 (40 Act)  Size: 19 KB
2023-08-29 811-02464
231218755
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-23-141626 (40 Act)  Size: 100 KB
2023-06-26 811-02464
231039482
N-CSRS  Documents Certified Shareholder Report, Semi-Annual
Acc-no: 0001683863-23-005168 (40 Act)  Size: 977 KB
2023-06-22 811-02464
231033861
497  Documents Definitive materials
Acc-no: 0000912938-23-000352 (33 Act)  Size: 64 KB
2023-05-31 002-50409
23979146
497  Documents Definitive materials
Acc-no: 0000912938-23-000349 (33 Act)  Size: 65 KB
2023-05-31 002-50409
23979112
497  Documents Definitive materials
Acc-no: 0000912938-23-000304 (33 Act)  Size: 97 KB
2023-03-30 002-50409
23777301
497  Documents Definitive materials
Acc-no: 0000912938-23-000308 (33 Act)  Size: 107 KB
2023-03-30 002-50409
23777329
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-23-066022 (40 Act)  Size: 286 KB
2023-03-27 811-02464
23761537
497J  Documents Certification of no change in definitive materials
Acc-no: 0000912938-23-000276 (33 Act)  Size: 113 KB
2023-03-03 002-50409
23701828
497K  Documents Summary Prospectus for certain open-end management investment companies filed pursuant to Securities Act Rule 497(K)
Acc-no: 0001104659-23-025756 (33 Act)  Size: 160 KB
2023-02-27 002-50409
23671454
485BPOS  Documents   Interactive Data Post-effective amendment [Rule 485(b)]
Acc-no: 0001104659-23-025752 (40 Act)  Size: 5 MB
2023-02-27 811-02464
23671439
485BPOS  Documents   Interactive Data Post-effective amendment [Rule 485(b)]
Acc-no: 0001104659-23-025752 (33 Act)  Size: 5 MB
2023-02-27 002-50409
23671438
24F-2NT  Documents Rule 24F-2 notice
Acc-no: 0001683863-23-000160 (33 Act)  Size: 8 KB
2023-01-18 002-50409
23533807
N-CEN  Documents Annual Report for Registered Investment Companies
Acc-no: 0001752724-23-000721 (40 Act)  Size: 107 KB
2023-01-11 811-02464
23523060
497  Documents Definitive materials
Acc-no: 0000912938-22-000497 (33 Act)  Size: 260 KB
2022-12-29 002-50409
221496427
497  Documents Definitive materials
Acc-no: 0000912938-22-000499 (33 Act)  Size: 110 KB
2022-12-29 002-50409
221496704
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-22-289256 (40 Act)  Size: 96 KB
2022-12-23 811-02464
221483582
N-CSR  Documents Certified Shareholder Report
Acc-no: 0001683863-22-007960 (40 Act)  Size: 1 MB
2022-12-22 811-02464
221482432
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-22-215419 (40 Act)  Size: 334 KB
2022-09-26 811-02464
221264557
N-PX  Documents Annual Report of proxy voting record of management investment companies
Acc-no: 0001193125-22-232522 (40 Act)  Size: 18 KB
2022-08-29 811-02464
221210253
497  Documents Definitive materials
Acc-no: 0000912938-22-000427 (33 Act)  Size: 64 KB
2022-08-26 002-50409
221199870
497  Documents Definitive materials
Acc-no: 0000912938-22-000424 (33 Act)  Size: 125 KB
2022-08-26 002-50409
221199846
497  Documents Definitive materials
Acc-no: 0000912938-22-000400 (33 Act)  Size: 415 KB
2022-07-29 002-50409
221117661
N-CSRS  Documents Certified Shareholder Report, Semi-Annual
Acc-no: 0001193125-22-183648 (40 Act)  Size: 1 MB
2022-06-28 811-02464
221048261
NPORT-P  Documents Monthly Portfolio Investments Report on Form N-PORT (Public)
Acc-no: 0001752724-22-143616 (40 Act)  Size: 123 KB
2022-06-23 811-02464
221034204