MFS Municipal Income Trust
US ˙ NYSE ˙ US5527381066

SecurityMFM / MFS Municipal Income Trust
InstitutionMackay Shields Llc
Latest Disclosed Ownership333,155 shares
Latest Disclosed Value $ 1,795,705
Mackay Shields Llc reports 1.91% decrease in ownership of MFM / MFS Municipal Income Trust

On April 24, 2026 - Mackay Shields Llc filed a 13F-HR form disclosing ownership of 333,155 shares of MFS Municipal Income Trust (US:MFM) valued at $1,795,705 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 339,657 shares of MFS Municipal Income Trust. This represents a change in shares of -1.91% during the quarter. The current value of the position is $1,789,042 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 -6,502 -1.91 1,796 -2.66 0.0313
2026-01-29 2025-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 339,657 -93,498 -21.59 1,844 -20.99 0.0319
2025-10-27 2025-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 433,155 100,000 30.02 2,335 35.54 0.0794
2025-07-24 2025-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,722 -2.44 0.0552
2025-04-29 2025-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,766 -0.95 0.0568
2025-02-04 2024-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,782 -6.46 0.0525
2024-10-31 2024-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,906 4.73 0.0522
2024-08-08 2024-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,819 1.68 0.0553
2024-05-03 2024-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,789 3.89 0.0496
2024-02-02 2023-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,722 13.66 0.0503
2023-10-25 2023-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,516 -10.83 0.0417
2023-07-27 2023-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,699 -4.50 0.0475
2023-04-27 2023-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,779 3.13 0.0488
2023-01-31 2022-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,726 7.01 0.0440
2022-11-02 2022-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,612 -11.04 0.0408
2022-08-03 2022-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 1,812 -11.13 0.0440
2022-05-13 2022-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,039 -12.56 0.0179
2022-02-04 2021-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,332 0.13 0.0194
2022-01-18 2021-09-30 13F/A-1 MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,329 -2.10 0.0219
2021-11-12 2021-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 2,329 0.0144
2021-08-13 2021-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,379 4.71 0.0224
2021-05-14 2021-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,272 2.11 0.0166
2021-02-16 2020-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,225 3.87 0.0153
2020-11-04 2020-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,142 3.03 0.0145
2020-07-31 2020-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 0 0.00 2,079 -2.35 0.0166
2020-05-08 2020-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 333,155 -284,100 -46.03 2,129 -51.21 0.0197
2020-02-11 2019-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 617,255 0 0.00 4,364 0.44 0.0301
2019-11-01 2019-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 617,255 171,118 38.36 4,345 39.53 0.0265
2019-08-13 2019-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 0.00 3,114 0.87 0.0212
2019-05-15 2019-03-31 13F/A-1 MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 0.00 3,087 12.71 0.0224
2019-05-13 2019-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 3,087
2019-02-14 2018-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 0.00 2,739 -5.39 0.0222
2018-11-14 2018-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 0.00 2,895 -1.53 0.0221
2018-08-06 2018-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 0 0.00 2,940 1.07 0.0204
2018-05-03 2018-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 446,137 12,258 2.83 2,909 -2.42 0.0181
2018-01-24 2017-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 433,879 86,355 24.85 2,981 19.14 0.1089
2017-10-24 2017-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 347,524 0 0.00 2,502 1.25 0.0931
2017-07-13 2017-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 347,524 -46,901 -11.89 2,471 -9.85 0.1045
2017-04-20 2017-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 394,425 0 0.00 2,741 4.82 0.1247
2017-01-10 2016-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 394,425 46,901 13.50 2,615 0.46 0.1248
2016-10-20 2016-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 347,524 -79,528 -18.62 2,603 -19.59 0.1173
2016-07-25 2016-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 427,052 363,661 573.68 3,237 614.57 0.1611
2016-04-21 2016-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 63,391 -4,426 -6.53 453 -1.74 0.0247
2016-01-19 2015-12-31 13F MFS MUN INCOME TR SH BEN INT 552738106 67,817 -116,743 -63.25 461 -60.90 0.0250
2015-10-22 2015-09-30 13F MFS MUN INCOME TR SH BEN INT 552738106 184,560 0 0.00 1,179 -0.67 0.0615
2015-08-03 2015-06-30 13F MFS MUN INCOME TR SH BEN INT 552738106 184,560 0 0.00 1,187 -4.74 0.0608
2015-05-05 2015-03-31 13F MFS MUN INCOME TR SH BEN INT 552738106 184,560 184,560 1,246 0.0660
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.