# Portfolio overlap — MBDIX vs MFIOX Comparing **MFS Corporate Bond Fund** (2026-04-30) and **MFS Income Fund** (2026-04-30). - Shared positions: 71 - MFS Corporate Bond Fund covered by MFS Income Fund: 0.1119877794922048348022569840 - MFS Income Fund covered by MFS Corporate Bond Fund: 0.1119877794922048348022569839 ## MFS Corporate Bond Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | MFS Institutional Money Market Portfolio, Class A | 0.017740 | ✓ | | UBS GROUP | 0.007773 | | | JPMORGAN CHASE | 0.007604 | | | BOEING CO | 0.007480 | ✓ | | CHARLES SCHWAB | 0.006201 | ✓ | | BERMUDA GOVERNMENT OF 5% 07/15/2032 144A | 0.005893 | | | MORGAN STANLEY | 0.005800 | | | SUMITOMO MITSUI | 0.005766 | | | UBS GROUP | 0.005436 | | | CAIXABANK SA REGD V/R 144A P/P 6.84000000 | 0.005384 | | | AMERICAN HOMES 4 | 0.005073 | | | AIB V6.608 09/13/29 144A | 0.005066 | | | SPIRE INC | 0.004968 | | | NXP BV/NXP FDG | 0.004960 | | | MARS INC | 0.004600 | | | BACARDI LTD / MARTINI BV SR UNSECURED 144A 06/33 5.4 | 0.004590 | | | Element Fleet Management Corp. | 0.004560 | | | Bank Hapoalim BM | 0.004543 | | | JPMORGAN CHASE | 0.004530 | ✓ | | NATL AUSTRALIABK | 0.004512 | | | Jane Street Group / JSG Finance Inc. | 0.004463 | | | CG 5.05 09/19/35 | 0.004446 | | | MXPRLL 7.75 07/15/30 144A | 0.004425 | | | Boston Gas Co | 0.004363 | | | SCIH SALT HOLDINGS INC SR SECURED 144A 05/28 4.875 | 0.004290 | | | PIONEER NATURAL | 0.004253 | | | Flutter Treasury DAC | 0.004243 | | | HIGHWOODS REALTY | 0.004223 | ✓ | | AMAZON.COM INC | 0.004176 | | | STORE CAPITAL LLC SR UNSECURED 12/31 2.7 | 0.004161 | ✓ | | ICON Investments Six DAC | 0.004146 | | | JPMORGAN CHASE | 0.004129 | | | NSTAU 6.125 04/11/33 144A | 0.004097 | ✓ | | SMBC AVIATION CAPITAL FI REGD 144A P/P 5.30000000 | 0.004093 | | | MUFG V5.188 09/12/36 | 0.004068 | | | PRMWCN 4.375 04/30/29 144a | 0.004063 | | | Citadel Securities Global Holdings LLC | 0.004050 | ✓ | | TARGA RESOURCES | 0.004008 | ✓ | | US TREASURY N/B | 0.003993 | | | TransDigm, Inc. | 0.003963 | | | CHENIERE ENERGYP | 0.003955 | | | EASTERN ENERGY | 0.003948 | | | US TREASURY N/B | 0.003907 | | | AMERICAN INTERNA | 0.003883 | | | DANSKE BANK A/S | 0.003834 | | | FERGUSON ENTERPR | 0.003832 | | | SUNOCO LP SR UNSECURED 144A 08/32 6.625 | 0.003818 | | | NORDEA BANK ABP | 0.003808 | | | JERSEY CENTRAL PWR + LT SR UNSECURED 144A 03/32 2.75 | 0.003803 | ✓ | | ARDN Mortgage Trust, Series 2025-ARCP, Class A | 0.003763 | | ## MFS Income Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | US TREASURY N/B | 0.029435 | | | US TREASURY N/B | 0.023805 | | | US TREASURY N/B | 0.021960 | | | US TREASURY N/B | 0.019849 | | | US TREASURY N/B | 0.018703 | ✓ | | MFS Institutional Money Market Portfolio, Class A | 0.018382 | ✓ | | US TREASURY N/B | 0.018213 | | | US TREASURY N/B | 0.017472 | | | US TREASURY N/B | 0.017419 | | | US TREASURY N/B | 0.017167 | | | US TREASURY N/B | 0.016192 | | | US TREASURY N/B | 0.015757 | | | US TREASURY N/B | 0.011813 | | | US TREASURY N/B | 0.008350 | | | JEFFERIES GROUP | 0.006207 | ✓ | | US TREASURY N/B | 0.005581 | | | New Residential Mortgage Loan Trust, Series 2026-NQM3, Class A1 | 0.004848 | | | PMT Loan Trust, Series 2026-INV2, Class A35 | 0.004845 | | | MF1 2025-FL19 LLC MF1 2025-FL19 AS | 0.004800 | | | Enel SPA 7.50 10/14/2032 | 0.004714 | | | Venture Global LNG Inc | 0.004699 | | | STORE Master Funding LLC, Series 2025-1A, Class A2 | 0.004598 | | | SANTOS FINANCE LTD REGD 144A P/P 6.87500000 | 0.004555 | ✓ | | US TREASURY N/B | 0.004514 | | | AUTONATION INC | 0.004514 | | | PFP Ltd., Series 2024-11, Class AS | 0.004326 | | | MF1 2025-FL19 LLC SER 2025-FL19 CL B V/R REGD 144A P/P 6.07586000 | 0.004272 | | | SAMMONS FINL. GRP. 6.875% | 0.004236 | ✓ | | C V6.875 PERP GG | 0.004217 | | | Bain Capital Credit CLO 2021-4 Ltd | 0.004160 | | | US TREASURY N/B | 0.004022 | | | VORNADO REALTY LP SR UNSECURED 02/33 5.75 | 0.003960 | ✓ | | TRANSDIGM INC SUB 4.625% 01-15-29 | 0.003924 | | | Northwoods Capital XIV-B Ltd., Series 2018-14BA, Class BR | 0.003899 | | | BOOZ ALLEN HAMILTON INC REGD 5.95000000 | 0.003860 | ✓ | | MF1 LLC, Series 2025-FL20, Class C | 0.003832 | | | SKX 10 07/15/33 144a | 0.003813 | | | Provident Funding Mortgage Trust, Series 2025-5, Class A4 | 0.003808 | | | Black Diamond CLO Ltd., Series 2019-2A, Class BR | 0.003796 | | | Parallel Ltd., Series 2023-1A, Class A2R | 0.003790 | | | NH NFAUTL 6.89 04/01/2034 | 0.003737 | ✓ | | COMM Mortgage Trust, Series 2024-CBM, Class B | 0.003731 | | | Jane Street Group / JSG Finance Inc. | 0.003688 | | | FR 5.25 01/15/31 | 0.003613 | | | Venture 43 CLO Ltd | 0.003541 | | | CHARLES SCHWAB | 0.003521 | ✓ | | MASSACHUSETTS ST DEV FIN AGY REVENUE | 0.003492 | ✓ | | NOMURA HOLDINGS | 0.003466 | | | MSRM 2026-NQM2 A1 | 0.003460 | | | NOMURA HOLDINGS INC JR SUBORDINA 12/99 VAR | 0.003452 | | ## Sources - N-PORT (fund A) — accession `0002071691-26-015565` (as of 2026-04-30) - N-PORT (fund B) — accession `0002071691-26-015571` (as of 2026-04-30) --- _Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them._ _Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC._ _Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed. See _