| NPORT-P | Monthly Portfolio Investments Report on ... | | State Street Bank & Trust CO Fund Admin Dept. /fa | 05/26/2026 | |
| 497J | Certification of no change in definitive... | Massachusetts Investors Trust | | 05/05/2026 | |
| 485BPOS | Post-effective amendment filed pursuant ... | MASSACHUSETTS INVESTORS TRUST , MASSACHUSETTS INVESTORS TRUST | | 04/29/2026 | |
| 497K | Summary Prospectus for certain open-end ... | Massachusetts Investors Trust | | 04/29/2026 | |
| 24F-2NT | Rule 24F-2 notice filed on Form 24F-2 | | | 03/16/2026 | |
| N-CEN | Annual Report for Registered Investment ... | | State Street Bank & Trust CO Fund Admin Dept. /fa | 03/13/2026 | |
| N-CSR | Certified annual shareholder report of r... | Massachusetts Investors Trust | DONNELLEY FINANCIAL SOLUTIONS /FA/ | 02/25/2026 | |
| NPORT-P | Monthly Portfolio Investments Report on ... | | State Street Bank & Trust CO Fund Admin Dept. /fa | 02/24/2026 | |
| NPORT-P | Monthly Portfolio Investments Report on ... | | State Street Bank & Trust CO Fund Admin Dept. /fa | 11/24/2025 | |
| 40-17G | Fidelity bond filed pursuant to Rule 17g... | MFS SERIES TRUST IX , MASSACHUSETTS INVESTORS GROWTH STOCK FUND , MASSACHUSETTS INVESTORS TRUST , MFS SERIES TRUST V , MFS SERIES TRUST III , MFS SERIES TRUST VII , MFS SERIES TRUST I , MFS Active Exchange Traded Funds Trust | | 10/30/2025 | |
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