# Portfolio overlap — MBMAX vs MFSMX Comparing **MFS Massachusetts Municipal Bond Fund** (2026-03-31) and **MFS Maryland Municipal Bond Fund** (2026-03-31). - Shared positions: 54 - MFS Massachusetts Municipal Bond Fund covered by MFS Maryland Municipal Bond Fund: 0.09386735669204304929064749133 - MFS Maryland Municipal Bond Fund covered by MFS Massachusetts Municipal Bond Fund: 0.09386735669204304929064749133 ## MFS Massachusetts Municipal Bond Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | MFS Institutional Money Market Portfolio, Class A | 0.016774 | ✓ | | MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.00000000 | 0.013654 | | | Commonwealth of Massachusetts Transportation Fund, Series 2025A | 0.012980 | | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.012407 | | | MA CLEAN WTR TRUST-27 | 0.010486 | | | MBTA SLS TAX 5.25% 7/1/55 | 0.010384 | | | MASSACHUSETTS ST | 0.010329 | | | MASSACHUSETTS ST SCH BLDG AUTH SALES TAX REVENUE | 0.010284 | | | MASSACHUSETTS ST SCH BLDG AUTH SALES TAX REVENUE | 0.010241 | | | MA ST TRANS REV 5% 6/1/2053 | 0.010215 | | | Tri-County Regional Vocational Technical School District, Series CHAPTER 70B | 0.009643 | | | MASS DEVEL FIN 4% 10/1/2045 | 0.009112 | | | PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 | 0.008951 | ✓ | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.008940 | | | MASSACHUSETTS ST PORT AUTH | 0.008907 | | | Massachusetts Development Finance Agency, Series 2025W | 0.008858 | | | Town of Tisbury | 0.008847 | | | Massachusetts Housing Finance Agency | 0.008698 | | | Massachusetts Bay Transportation Authority, Series 2025 B | 0.007968 | | | Massachusetts Educational Financing Authority | 0.007892 | | | WAKEFIELD MA REGD B/E 5.00000000 | 0.007816 | | | Massachusetts Development Finance Agency | 0.007760 | | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.007740 | | | MA ST TRANS REV 5% 6/1/2049 | 0.007700 | | | MASS DEVEL FIN 5% 7/1/2048 | 0.007685 | | | MASSACHUSETTS ST PORT AUTH REGD B/E AMT 5.00000000 | 0.007585 | | | MASSACHUSETTS ST | 0.007574 | | | MASSACHUSETTS ST PORT AUTH | 0.007555 | | | MASSACHUSETTS ST TRANSPRTN FUND REVENUE | 0.007549 | | | MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.50000000 | 0.007542 | | | MASSACHUSETTS ST DEV FIN AGY R REGD B/E 5.00000000 | 0.007516 | | | Massachusetts Housing Finance Agency | 0.007501 | | | Massachusetts Port Authority, Revenue Bonds, Refunding Series 2017A | 0.007470 | | | Massachusetts (Commonwealth of), Series 2024 E, GO Bonds | 0.007456 | | | Massachusetts Housing Finance Agency, Series 2013B | 0.007423 | | | Massachusetts Housing Finance Agency, Series 249 | 0.007379 | | | S E ENERGY COOP DT | 0.007237 | | | MA ST DEV FIN -J2 | 0.007146 | | | Nashoba Regional School District | 0.007130 | | | Commonwealth of Massachusetts Transportation Fund Revenue | 0.007074 | | | Massachusetts Development Finance Agency 4.00% 07/01/2039 | 0.007048 | | | MASSACHUSETTS ST PORT AUTH | 0.007009 | | | Town of Hingham, Series 2025 | 0.006960 | | | NEW BEDFORD MA | 0.006858 | | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.006853 | | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.006732 | | | MA ST DEV FIN AGY-N | 0.006704 | | | Massachusetts Housing Finance Agency, Single Family Housing Revenue Bonds, Social Series 2024-234 | 0.006693 | | | Massachusetts Development Finance Agency | 0.006494 | | | CALIFORNIA ST HLTH FACS FING AUTH REVENUE | 0.006149 | | ## MFS Maryland Municipal Bond Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | MFS Institutional Money Market Portfolio, Class A | 0.032878 | ✓ | | MARYLAND ST ECON DEV CORP LEASE REVENUE | 0.013277 | | | Maryland Economic Development Corp., Series 2024 | 0.012570 | | | Montgomery (County of), MD, Series 2017, GO Bonds | 0.012208 | | | MARYLAND ST STD 5% 5/1/2035 | 0.011470 | | | PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 | 0.011098 | ✓ | | County of Prince George's, Series 2025 A | 0.010330 | | | Washington Metropolitan Area Transit Authority Dedicated | 0.010326 | | | Maryland Stadium Authority, Series 2024 | 0.010099 | | | County of Anne Arundel, Series 2025 | 0.010040 | | | MD HLTH & HGR EDL-A | 0.010035 | | | Maryland Health & Higher Educational Facilities Authority | 0.009986 | | | PRINCE GEO COP 5% 10/1/48 | 0.009796 | | | Maryland Community Development Administration, Series 2025 F-1 | 0.009679 | | | MARYLAND STADIUM AUTHORITY | 0.009589 | | | WASHINGTON SUBURBAN SANITARY COMMISSION | 0.009393 | | | COUNTY OF BALTIMORE MD | 0.009367 | | | County of Howard | 0.009150 | | | MARYLAND ST HLTH & HGR EDUCTNL FACS AUTH REVENUE | 0.009039 | | | Maryland Health & Higher Educational Facilities Authority, Series 2004 | 0.008971 | | | County of Anne Arundel, Series 2023 | 0.008952 | | | City of Baltimore, Series 2019 A | 0.008944 | | | Maryland Community Development Administration Department of Housing and Community Development, Residential Revenue Bonds, Taxable Series 2019D | 0.008944 | | | MARYLAND ST STA 4% 6/1/2046 | 0.008446 | | | MARYLAND HEALTH & HIGHER EDUCATIONAL FACILITIES AUTHORITY | 0.008276 | | | Maryland Health & Higher Educational Facilities Authority | 0.008100 | | | MONTGOMERY CNTY MD REVENUE REGD B/E 5.00000000 | 0.007969 | | | Maryland Community Development Administration Local Government Infrastructure | 0.007904 | | | MD CMNTY DEV-D-1 | 0.007651 | | | Washington Metropolitan Area Transit Authority, Series 2018, RB | 0.007425 | | | MD HEFA 4% 7/1/2048 | 0.007121 | | | County of Montgomery | 0.007114 | | | MD CMNTY DEPT ADMIN-B | 0.007054 | | | Maryland Health & Higher Educational Facilities Authority | 0.007032 | | | CALIFORNIA COMMUNITY VAR | 0.006952 | | | MD TRANSPRTN-A-REF | 0.006941 | | | Montgomery County Housing Opportunities Commission, Series 2023 C | 0.006918 | | | Maryland Department of Housing & Community Development, Series 2024 E | 0.006917 | | | MD ECON DEV CORP-A | 0.006890 | | | County of Prince George's | 0.006685 | | | MARYLAND ST ECON DEV CORP AIR CARGO REVENUE | 0.006683 | | | Washington Metropolitan Area Transit Authority, Series 2025, RB | 0.006673 | | | Maryland Stadium Authority Sports Entertainment Facilities Revenue, Series 2023 A | 0.006646 | | | State of Maryland Department of Transportation, Series 2024 A | 0.006637 | | | MARYLAND ST HLTH & HGR EDUCTNL MARYLAND HEALTH & HIGHER EDUCATIONAL FACILITIES AU | 0.006626 | | | MARYLAND ST HLTH & HGR EDUCTNL FACS AUTH REVENUE | 0.006592 | | | Maryland Department of Housing & Community Development, Series 2025 D | 0.006580 | | | State of Maryland Department of Transportation, Series 2024 A | 0.006577 | | | MARYLAND ST STA 4% 6/1/2036 | 0.006569 | | | Montgomery County Housing Opportunities Commission, Series 2025A | 0.006561 | | ## Sources - N-PORT (fund A) — accession `0002071691-26-011422` (as of 2026-03-31) - N-PORT (fund B) — accession `0002071691-26-011429` (as of 2026-03-31) --- _Informational only — not investment advice. 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