MIALX
MFS Inflation-Adjusted Bond Fund
MFS Series Trust IX

Portfolio moves

Net position changes between two of this fund's N-PORT snapshots. These are differences between point-in-time reports — not a trade log — and share counts can be affected by splits and other corporate actions.

Oct 31, 2025 → Jan 31, 2026

Expand a category to see the positions behind it, ranked by weight.

Security Shares Oct 2025 Shares Jan 2026 Δ shares End % Δ value
U.S. Treasury Inflation-Linked Notes 0 62,125,240 62,125,240 4.03% $61.83M
Government National Mortgage Association 0 6,895,461 6,895,461 0.45% $6.95M
Fannie Mae REMICS 0 3,978,775 3,978,775 0.26% $4.07M
Government National Mortgage Association 0 3,827,956 3,827,956 0.25% $3.83M
Government National Mortgage Association 0 1,455,453 1,455,453 0.10% $1.48M
PMTLT 2026-CNF1 A26 0 1,438,428 1,438,428 0.09% $1.44M
J.P. Morgan Mortgage Trust, Series 2026-NQM1, Class A1 0 1,265,018 1,265,018 0.08% $1.27M
Freddie Mac REMICS 0 2,599,530 2,599,530 0.03% $423.35K
FNR 2021-1 IH 0 1,378,627 1,378,627 0.01% $197.11K
Freddie Mac REMICS 0 923,223 923,223 0.01% $151.07K
Fannie Mae REMICS 0 1,036,117 1,036,117 0.01% $138.06K
Security Shares Oct 2025 Shares Jan 2026 Δ shares End % Δ value
U.S. Treasury Inflation-Protected Security 0.375%, due 01/15/27 13,493,143 0 -13,493,143 0.00% -$13.35M
AmeriCredit Automobile Receivables Trust 2024-1 600,087 0 -600,087 0.00% -$600.27K
MICHIGAN ST FIN AUTH REVENUE 446,940 0 -446,940 0.00% -$444.33K
Alinea CLO Ltd., Series 2018-1A, Class AR 53,384 0 -53,384 0.00% -$53.40K
POUND STERLING -2 0 2 0.00% $3
Security Shares Oct 2025 Shares Jan 2026 Δ shares End % Δ value
U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034 115,800,353 115,833,309 32,956 7.56% -$158.62K
U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029 115,209,414 115,241,734 32,320 7.46% $688.59K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/32 104,830,616 104,860,211 29,595 6.31% $551.81K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027 90,123,851 90,149,025 25,174 5.85% $607.60K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033 77,072,641 77,094,605 21,964 4.86% $75.47K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28 68,033,121 68,052,138 19,017 4.68% -$23.34K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33 69,990,363 70,010,043 19,680 4.48% -$9.64K
U.S. Treasury Notes 57,684,698 57,701,133 16,434 3.81% $179.06K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028 57,892,988 57,909,294 16,306 3.74% $407.20K
U.S. Treasury Inflation-Protected Indexed Notes 29,946,850 40,336,307 10,389,457 2.66% $10.43M
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045 54,650,010 54,665,500 15,489 2.60% -$1.30M
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043 37,231,063 37,241,630 10,567 1.81% -$702.21K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 02/15/2052 42,200,820 42,212,784 11,964 1.45% -$1.05M
U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48 25,419,330 25,426,488 7,158 1.21% -$699.81K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032 11,709,915 11,713,170 3,255 0.72% $33.40K
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028 5,163,440 5,164,920 1,480 0.34% $34.64K
USD-SOFR-OIS Compound---20350226 289,600,000 335,757,000 46,157,000 0.00% -$270.54K
WHEAT SEP 26 779 2,225 1,446 -0.02% -$194.00K
Security Shares Oct 2025 Shares Jan 2026 Δ shares End % Δ value
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031 202,222,085 189,654,877 -12,567,208 11.65% -$10.66M
U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030 181,105,068 148,993,898 -32,111,170 9.27% -$29.52M
U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042 118,763,880 106,156,381 -12,607,499 5.39% -$11.95M
U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054 37,454,505 35,069,913 -2,384,592 2.05% -$3.55M
MFS Institutional Money Market Portfolio, Class A 38,990,400 15,157,264 -23,833,136 0.99% -$23.84M
U.S. Treasury Notes 0.125%, Due 1/15/2030 16,372,460 12,272,777 -4,099,683 0.77% -$3.82M
Freddie Mac REMICS 4,169,969 3,850,976 -318,993 0.25% -$318.25K
Government National Mortgage Association 3,131,653 2,818,804 -312,848 0.19% -$331.06K
Freddie Mac REMICS 2,836,463 2,675,499 -160,963 0.17% -$136.64K
Government National Mortgage Association 2,861,577 2,458,655 -402,923 0.16% -$435.97K
GreatAmerica Leasing Receivables Funding LLC, Series 2025-1, Class A2 2,485,000 2,310,095 -174,905 0.15% -$174.41K
FNMA, Series 2023-54, Class FD 1,882,659 1,708,762 -173,897 0.11% -$169.51K
Government National Mortgage Association 1,835,218 1,694,918 -140,300 0.11% -$134.29K
PMTLT 2025-INV10 A36 1,715,273 1,658,093 -57,180 0.11% -$50.43K
ARI Fleet Lease Trust, Series 2025-A, Class A2 1,437,000 1,327,528 -109,472 0.09% -$107.75K
Government National Mortgage Association 1,464,271 1,302,282 -161,988 0.08% -$159.80K
MSRM 2025-NQM3 VAR 05/25/2070 144A 1,371,650 1,269,854 -101,796 0.08% -$95.93K
Government National Mortgage Association 1,390,732 1,229,805 -160,928 0.08% -$161.38K
Benchmark Mortgage Trust, Series 2021-B28, Class XA 24,690,148 24,635,590 -54,558 0.08% -$62.70K
FNR 2024-88 FC 1,304,706 1,146,174 -158,532 0.08% -$153.57K
Benchmark Mortgage Trust, Series 2021-B23, Class XA 25,093,024 25,052,028 -40,996 0.07% -$56.08K
Morgan Stanley Capital I Trust, Series 2021-L7, Class XA 27,131,047 27,071,890 -59,158 0.07% -$59.50K
BANK, Series 2021-BN31, Class XA 18,881,025 18,833,312 -47,713 0.06% -$49.42K
Benchmark Mortgage Trust, Series 2021-B27, Class XA 20,359,109 20,328,867 -30,242 0.06% -$73.92K
OBX Trust, Series 2025-NQM8, Class A1 1,034,139 918,424 -115,716 0.06% -$112.27K
Freddie Mac Multifamily Structured Pass Through Certificates 36,127,540 36,090,533 -37,007 0.05% -$37.95K
Benchmark Mortgage Trust, Series 2021-B24, Class XA 15,331,697 15,314,270 -17,427 0.04% $2.83K
BBCMS Trust, Series 2021-C10, Class XA 12,255,777 11,925,168 -330,609 0.04% -$40.45K
Wells Fargo Commercial Mortgage Trust, Series 2021-C60, Class XA 9,202,671 9,184,179 -18,492 0.04% -$25.78K
3650R Commercial Mortgage Trust, Series 2021-PF1, Class XA 14,408,423 14,376,349 -32,074 0.03% -$26.66K
Freddie Mac Multifamily Structured Pass Through Certificates 9,672,915 9,636,424 -36,491 0.03% -$26.26K
BBCMS Mortgage Trust, Series 2021-C9, Class XA 7,801,054 7,675,800 -125,254 0.03% -$29.13K
Morgan Stanley Capital I Trust, Series 2021-L5, Class XA 10,041,965 10,029,238 -12,727 0.03% -$13.47K
MSC 2021-L6 XA 1.35631% 06/15/2054 11,979,818 11,568,035 -411,783 0.03% -$29.49K
FNMA, Series 2020-65, Class EI 2,122,790 2,064,899 -57,890 0.03% -$15.15K
Freddie Mac REMICS 2,405,585 2,379,367 -26,219 0.02% -$16.36K
COLORADO ST HLTH FACS AUTH REVENUE 600,000 380,000 -220,000 0.02% -$217.16K
Freddie Mac Multifamily Structured Pass Through Certificates 29,559,520 29,524,216 -35,304 0.02% -$23.83K
Freddie Mac Multifamily Structured Pass Through Certificates 25,401,461 25,393,101 -8,361 0.02% -$22.59K
Bridgecrest Lending Auto Securitization Trust, Series 2025-1, Class A2 1,126,296 228,159 -898,137 0.01% -$898.20K
LAD Auto Receivables Trust, Series 2024-3A, Class A2 620,451 211,544 -408,907 0.01% -$409.17K
Freddie Mac Multifamily Structured Pass Through Certificates 7,353,849 7,350,232 -3,617 0.01% -$8.75K
Santander Drive Auto Receivables Trust 2025-1 1,420,511 128,579 -1,291,933 0.01% -$1.29M
SBNA Auto Receivables Trust, Series 2025-SF1, Class B 460,719 99,946 -360,773 0.01% -$361.13K
FREDDIE MAC MULTIFAMILY STRUCTURED PASS THROUGH CERTIFI SER K124 CL X1 V/R 0.71499300 1,833,583 1,830,558 -3,025 0.00% -$2.73K
Security Shares Oct 2025 Shares Jan 2026 Δ shares End % Δ value
Palmer Square Loan Funding Ltd., Series 2025-2A, Class A2 5,700,000 5,700,000 0 0.37% $6.13K
Palmer Square Loan Funding Ltd., Series 2025-1A, Class A2 4,300,000 4,300,000 0 0.28% $41.99K
SHACKLETON CLO LTD SHACK 2019 14A BRR 144A 3,996,016 3,996,016 0 0.26% $1.67K
PFS Financing Corp., Series 2025-A, Class A 3,476,000 3,476,000 0 0.23% -$1.85K
Barings CLO Ltd., Series 2021-3A, Class B1R 3,000,000 3,000,000 0 0.20% $8.66K
Toledo Hospital/The 2,421,000 2,421,000 0 0.16% $3.85K
AREIT Trust, Series 2022-CRE6, Class AS 2,462,500 2,462,500 0 0.16% -$6
CONSFD 3.474 12/15/29 2019 1,438,000 1,438,000 0 0.09% $1.91K
Freddie Mac Multifamily Structured Pass Through Certificates 54,980,294 54,980,294 0 0.09% -$36.19K
Freddie Mac Multifamily Structured Pass Through Certificates 50,485,813 50,485,813 0 0.08% -$48.03K
SDART 2025-1 A3 1,200,000 1,200,000 0 0.08% -$1.04K
Freddie Mac Multifamily Structured Pass Through Certificates 49,721,062 49,721,062 0 0.06% -$32.94K
Freddie Mac Multifamily Structured Pass Through Certificates 32,486,236 32,486,236 0 0.06% -$32.97K
FREMF 2025-K169 Mortgage Trust 35,704,535 35,704,535 0 0.05% -$15.91K
Freddie Mac Multifamily Structured Pass Through Certificates 28,847,080 28,847,080 0 0.05% -$59.58K
Freddie Mac Multifamily Structured Pass Through Certificates 29,100,000 29,100,000 0 0.04% -$14.19K
Freddie Mac Multifamily Structured Pass Through Certificates 7,419,164 7,419,164 0 0.03% -$13.23K
ZURICH INSURANCE GROUP AG TRS 0.0000% 05-15-2033 79,900,000 79,900,000 0 0.03% -$274.13K
Freddie Mac Multifamily Structured Pass Through Certificates 11,388,256 11,388,256 0 0.03% -$6.32K
Freddie Mac Multifamily Structured Pass Through Certificates 6,326,494 6,326,494 0 0.03% -$21.94K
Freddie Mac Multifamily Structured Pass Through Certificates 9,783,880 9,783,880 0 0.03% -$16.56K
Freddie Mac Multifamily Structured Pass Through Certificates 8,529,316 8,529,316 0 0.02% -$16.60K
Freddie Mac Multifamily Structured Pass Through Certificates 7,521,262 7,521,262 0 0.02% -$14.68K
Freddie Mac Multifamily Structured Pass Through Certificates 4,421,663 4,421,663 0 0.02% -$11.14K
Freddie Mac Multifamily Structured Pass Through Certificates 3,519,182 3,519,182 0 0.02% -$13.35K
Freddie Mac Multifamily Structured Pass Through Certificates 8,215,224 8,215,224 0 0.01% -$9.35K
Freddie Mac Multifamily Structured Pass Through Certificates 3,529,812 3,529,812 0 0.01% -$8.81K

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