MFS New Discovery Fund
Registrant
MFS SERIES TRUST I
Class tickers
MNDAX
MNDBX
MNDCX
MNDGX
MNDHX
MNDIX
MNDJX
MNDKX
MNDRX
Net Assets
$2,141,887,934
Holdings
105
Latest Report
Aug 31, 2026
Net Assets Over Time
Holdings · 105
Export CSV
Portfolio coverage: 105 of
118 reported positions.
Showing 1–50
of 105 holdings by value
· page 1 of 3
| Holding | Symbol | Balance | Value | % of Fund | Side | Category | Open |
|---|---|---|---|---|---|---|---|
| CACI International Inc | CACI | 86,908 | $54,144,553 | 2.53% | Long | EC | |
| Ligand Pharmaceuticals Inc | LGND | 175,886 | $49,969,213 | 2.33% | Long | EC | |
| Merit Medical Systems Inc | MMSI | 494,960 | $44,873,074 | 2.10% | Long | EC | |
| Charles River Laboratories International Inc | CRL | 145,395 | $41,908,655 | 1.96% | Long | EC | |
| Chefs' Warehouse Inc/The | CHEF | 362,303 | $40,748,218 | 1.90% | Long | EC | |
| Waystar Holding Corp | WAY | 1,343,058 | $35,161,258 | 1.64% | Long | EC | |
| Moog Inc | MOG-A | 94,553 | $35,126,440 | 1.64% | Long | EC | |
| Advanced Energy Industries Inc | AEIS | 126,228 | $34,947,484 | 1.63% | Long | EC | |
| SSR Mining Inc | SSRM | 923,876 | $34,746,976 | 1.62% | Long | EC | |
| GFL Environmental Inc | GFL | 750,829 | $31,752,558 | 1.48% | Long | EC | |
| Littelfuse Inc | LFUS | 76,909 | $31,700,352 | 1.48% | Long | EC | |
| Donaldson Co Inc | DCI | 347,248 | $31,561,371 | 1.47% | Long | EC | |
| Box Inc | BOX | 849,188 | $30,383,947 | 1.42% | Long | EC | |
| QXO Inc | QXO | 2,275,356 | $30,216,728 | 1.41% | Long | EC | |
| Element Solutions Inc | ESI | 827,899 | $29,423,530 | 1.37% | Long | EC | |
| TTM Technologies Inc | TTMI | 243,556 | $28,963,680 | 1.35% | Long | EC | |
| Integer Holdings Corp | ITGR | 231,124 | $28,948,281 | 1.35% | Long | EC | |
| Knife River Corp | KNF | 458,153 | $28,726,193 | 1.34% | Long | EC | |
| Oceaneering International Inc | OII | 554,753 | $28,714,015 | 1.34% | Long | EC | |
| CCC Intelligent Solutions Holdings Inc | CCC | 3,678,622 | $27,442,520 | 1.28% | Long | EC | |
| Viasat Inc | VSAT | 391,861 | $26,360,489 | 1.23% | Long | EC | |
| UFP Technologies Inc | UFPT | 87,878 | $26,183,250 | 1.22% | Long | EC | |
| Terreno Realty Corp | TRNO | 392,928 | $26,015,763 | 1.21% | Long | EC | |
| Timken Co/The | TKR | 215,534 | $25,961,070 | 1.21% | Long | EC | |
| Lincoln International Inc | LCLN | 952,663 | $24,045,214 | 1.12% | Long | EC | |
| Matador Resources Co | MTDR | 413,076 | $23,962,539 | 1.12% | Long | EC | |
| Digi International Inc | DGII | 319,218 | $23,922,197 | 1.12% | Long | EC | |
| Simpson Manufacturing Co Inc | SSD | 129,694 | $23,683,421 | 1.11% | Long | EC | |
| PJT Partners Inc | PJT | 130,755 | $23,586,894 | 1.10% | Long | EC | |
| Brunswick Corp/DE | BC | 300,817 | $22,832,010 | 1.07% | Long | EC | |
| SiteOne Landscape Supply Inc | SITE | 217,571 | $21,437,271 | 1.00% | Long | EC | |
| Ryman Hospitality Properties Inc | RHP | 167,094 | $21,180,835 | 0.99% | Long | EC | |
| WisdomTree Inc | WT | 857,327 | $20,627,288 | 0.96% | Long | EC | |
| Flowserve Corp | FLS | 244,713 | $19,354,351 | 0.90% | Long | EC | |
| Guardant Health Inc | GH | 119,999 | $19,082,241 | 0.89% | Long | EC | |
| Installed Building Products Inc | IBP | 78,529 | $19,069,197 | 0.89% | Long | EC | |
| HeartFlow Inc | HTFL | 376,967 | $18,995,367 | 0.89% | Long | EC | |
| Semtech Corp | SMTC | 138,500 | $18,414,960 | 0.86% | Long | EC | |
| Kymera Therapeutics Inc | KYMR | 150,719 | $17,906,924 | 0.84% | Long | EC | |
| Patrick Industries Inc | PATK | 218,909 | $17,889,243 | 0.84% | Long | EC | |
| Schrodinger Inc/United States | SDGR | 906,770 | $17,682,015 | 0.83% | Long | EC | |
| MiniMed Group Inc | MMED | 866,942 | $17,564,245 | 0.82% | Long | EC | |
| Antero Resources Corp | AR | 446,520 | $17,182,090 | 0.80% | Long | EC | |
| Pulse Biosciences Inc | PLSE | 339,453 | $17,084,669 | 0.80% | Long | EC | |
| Leonardo DRS Inc | DRS | 442,287 | $16,806,906 | 0.78% | Long | EC | |
| Praxis Precision Medicines Inc | PRAX | 47,786 | $16,739,436 | 0.78% | Long | EC | |
| AtriCure Inc | ATRC | 341,866 | $16,529,221 | 0.77% | Long | EC | |
| NPK International Inc | NPKI | 1,239,797 | $16,464,504 | 0.77% | Long | EC | |
| FormFactor Inc | FORM | 163,204 | $16,419,954 | 0.77% | Long | EC | |
| RadNet Inc | RDNT | 213,686 | $16,201,673 | 0.76% | Long | EC |
Showing the top 50 of 105 holdings. Create a free account to see every holding and download the CSV.