Holdings of MFS New Discovery Fund
MFS SERIES TRUST I · 106 declared positions · as of Feb 28, 2026
Original filing · Net assets 2.1B $ · Ten largest lines: 23 % of the equity sleeve
Sector breakdown
- Unattributed 100.0 %
Sector is not declared in Form N-PORT: this is a Titelia classification, decided company by company. The unattributed share is counted as such rather than spread over the others.
Currency breakdown
- USD 100.0 %
The currency each line is denominated in, as declared. It does not follow the country: a French company listed in the United States is declared in dollars.
Country breakdown
- US 92.3 %
- IE 1.9 %
- GB 1.1 %
- DK 0.9 %
- GG 0.9 %
- JE 0.9 %
- CH 0.7 %
- CA 0.6 %
- IL 0.4 %
- KY 0.4 %
Shares computed on the equity sleeve, the only part this site carries.
| Country | Lines | Value | Share |
|---|---|---|---|
| US | 97 | 1.9B $ | 92.28 % |
| IE | 1 | 39.2M $ | 1.87 % |
| GB | 1 | 22.8M $ | 1.09 % |
| DK | 1 | 19M $ | 0.91 % |
| GG | 1 | 18M $ | 0.86 % |
| JE | 1 | 17.8M $ | 0.85 % |
| CH | 1 | 14.8M $ | 0.71 % |
| CA | 1 | 12.9M $ | 0.62 % |
| IL | 1 | 9.1M $ | 0.43 % |
| KY | 1 | 8M $ | 0.38 % |
Positions
| Company | Shares | Value | Weight |
|---|---|---|---|
| MFS Institutional Money Market Portfolio | 103,182,629 | 103.2M $ | 4.93 % |
| Advanced Energy Industries Inc | 181,264 | 60.8M $ | 2.90 % |
| Ligand Pharmaceuticals Inc | 240,630 | 47.7M $ | 2.28 % |
| QXO Inc | 1,949,869 | 46.7M $ | 2.23 % |
| Modine Manufacturing Co | 177,424 | 40.3M $ | 1.93 % |
| nVent Electric PLC | 331,297 | 39.2M $ | 1.87 % |
| MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC | 156,382 | 38.8M $ | 1.85 % |
| Bio-Techne Corp | 644,777 | 38M $ | 1.82 % |
| Littelfuse Inc | 96,522 | 34M $ | 1.62 % |
| Flowserve Corp | 364,538 | 32.3M $ | 1.54 % |
| nLight Inc | 568,016 | 31.9M $ | 1.52 % |
| Chefs' Warehouse Inc/The | 439,908 | 31.4M $ | 1.50 % |
| Legence Corp | 534,017 | 31M $ | 1.48 % |
| JFrog Ltd | 770,563 | 30.9M $ | 1.48 % |
| Crane Co | 154,058 | 30.9M $ | 1.48 % |
| XPO Inc | 146,513 | 30.8M $ | 1.47 % |
| Primoris Services Corp | 204,248 | 30.8M $ | 1.47 % |
| TopBuild Corp | 67,955 | 30.5M $ | 1.45 % |
| Integer Holdings Corp | 332,845 | 28.9M $ | 1.38 % |
| CACI International Inc | 46,719 | 28.5M $ | 1.36 % |
| Terreno Realty Corp | 431,089 | 28.5M $ | 1.36 % |
| FormFactor Inc | 287,238 | 28.4M $ | 1.36 % |
| Knife River Corp | 318,820 | 28.4M $ | 1.35 % |
| Leonardo DRS Inc | 650,719 | 28.2M $ | 1.35 % |
| TTM Technologies Inc | 264,840 | 27.6M $ | 1.32 % |
| Charles River Laboratories International Inc | 151,776 | 27.1M $ | 1.29 % |
| Hamilton Lane Inc | 256,114 | 26.9M $ | 1.28 % |
| Bloom Energy Corp | 162,058 | 25.2M $ | 1.20 % |
| James Hardie Industries PLC | 1,021,281 | 24.9M $ | 1.19 % |
| Ionis Pharmaceuticals Inc | 306,440 | 24.9M $ | 1.19 % |
| Patrick Industries Inc | 194,539 | 24.1M $ | 1.15 % |
| Waystar Holding Corp | 929,763 | 23.8M $ | 1.14 % |
| Schrodinger Inc/United States | 1,939,973 | 23.4M $ | 1.12 % |
| Element Solutions Inc | 657,797 | 23.1M $ | 1.10 % |
| TechnipFMC PLC | 343,557 | 22.8M $ | 1.09 % |
| Ollie's Bargain Outlet Holdings Inc | 212,183 | 22.7M $ | 1.09 % |
| PJT Partners Inc | 152,073 | 22.5M $ | 1.07 % |
| Collegium Pharmaceutical Inc | 538,945 | 22.5M $ | 1.07 % |
| Simpson Manufacturing Co Inc | 114,246 | 22.1M $ | 1.06 % |
| Brunswick Corp/DE | 275,821 | 22M $ | 1.05 % |
| StandardAero Inc | 643,999 | 19.8M $ | 0.95 % |
| Ascendis Pharma A/S | 81,267 | 19M $ | 0.91 % |
| WisdomTree Inc | 1,103,339 | 18.9M $ | 0.90 % |
| Globus Medical Inc | 191,893 | 18.3M $ | 0.87 % |
| Alkami Technology Inc | 1,098,764 | 18.2M $ | 0.87 % |
| Genius Sports Ltd | 2,900,461 | 18M $ | 0.86 % |
| Birkenstock Holding Plc | 427,501 | 17.8M $ | 0.85 % |
| CCC Intelligent Solutions Holdings Inc | 3,046,362 | 17.8M $ | 0.85 % |
| Amprius Technologies Inc | 1,622,119 | 17.4M $ | 0.83 % |
| Dutch Bros Inc | 320,169 | 17.2M $ | 0.82 % |
| GeneDx Holdings Corp | 214,387 | 17.1M $ | 0.82 % |
| Azenta Inc | 632,605 | 17.1M $ | 0.82 % |
| UFP Technologies Inc | 80,938 | 17M $ | 0.81 % |
| BioLife Solutions Inc | 703,004 | 17M $ | 0.81 % |
| Matador Resources Co | 320,544 | 16.5M $ | 0.79 % |
| Antero Resources Corp | 446,841 | 16.4M $ | 0.79 % |
| Viper Energy Inc | 352,929 | 16.4M $ | 0.78 % |
| Guardant Health Inc | 172,243 | 16.2M $ | 0.77 % |
| Box Inc | 674,738 | 15.9M $ | 0.76 % |
| IRhythm Holdings Inc | 110,994 | 14.8M $ | 0.71 % |
| AtriCure Inc | 474,774 | 14.8M $ | 0.71 % |
| Sportradar Group AG | 808,772 | 14.8M $ | 0.71 % |
| Kymera Therapeutics Inc | 161,340 | 14.7M $ | 0.70 % |
| Align Technology Inc | 77,293 | 14.7M $ | 0.70 % |
| Q2 Holdings Inc | 299,101 | 14.4M $ | 0.69 % |
| Advanced Drainage Systems Inc | 83,668 | 14.3M $ | 0.68 % |
| Knight-Swift Transportation Holdings Inc | 227,695 | 14.3M $ | 0.68 % |
| Uranium Energy Corp | 928,001 | 14.2M $ | 0.68 % |
| Netskope Inc | 1,314,788 | 14.2M $ | 0.68 % |
| Columbia Sportswear Co | 224,920 | 13.9M $ | 0.67 % |
| US Foods Holding Corp | 139,808 | 13.5M $ | 0.65 % |
| Permian Resources Corp | 735,469 | 13.5M $ | 0.64 % |
| Kiniksa Pharmaceuticals International Plc | 298,137 | 13.3M $ | 0.63 % |
| GFL Environmental Inc | 292,137 | 12.9M $ | 0.62 % |
| Visteon Corp | 132,237 | 12.7M $ | 0.60 % |
| Cytokinetics Inc | 202,120 | 12.6M $ | 0.60 % |
| GCM Grosvenor Inc | 1,080,452 | 12.5M $ | 0.60 % |
| Mirion Technologies Inc | 577,405 | 12.5M $ | 0.60 % |
| Cogent Biosciences Inc | 310,908 | 12.1M $ | 0.58 % |
| Covista Inc | 122,109 | 12M $ | 0.57 % |
| Karman Holdings Inc | 133,200 | 11.7M $ | 0.56 % |
| Once Upon a Farm PBC | 484,593 | 11.2M $ | 0.54 % |
| Black Rock Coffee Bar Inc | 810,663 | 10.8M $ | 0.52 % |
| Independence Realty Trust Inc | 639,578 | 10.6M $ | 0.51 % |
| Adaptive Biotechnologies Corp | 650,470 | 10.4M $ | 0.50 % |
| Pegasystems Inc | 232,383 | 10.2M $ | 0.49 % |
| Immunocore Holdings PLC | 304,295 | 9.8M $ | 0.47 % |
| Corsair Gaming Inc | 1,683,987 | 9.2M $ | 0.44 % |
| Wix.com Ltd | 128,798 | 9.1M $ | 0.43 % |
| Neurocrine Biosciences Inc | 68,514 | 9.1M $ | 0.43 % |
| Miami International Holdings Inc | 201,637 | 8.6M $ | 0.41 % |
| LEGEND BIOTECH CORP | 421,581 | 8M $ | 0.38 % |
| StepStone Group Inc | 183,841 | 7.9M $ | 0.38 % |
| Ceribell Inc | 376,698 | 7M $ | 0.34 % |
| York Space Systems Inc | 254,216 | 6.5M $ | 0.31 % |
| CG oncology Inc | 100,229 | 5.9M $ | 0.28 % |
| Harmony Biosciences Holdings Inc | 180,966 | 5.2M $ | 0.25 % |
| Bitgo Holdings Inc | 487,596 | 4.8M $ | 0.23 % |
| Tempus AI Inc | 86,778 | 4.6M $ | 0.22 % |
| PROCEPT BIOROBOTICS CORP | 194,059 | 4.4M $ | 0.21 % |
| Ultragenyx Pharmaceutical Inc | 175,165 | 4.1M $ | 0.20 % |
| Billiontoone Inc | 53,322 | 4.1M $ | 0.19 % |
| Annexon Inc | 668,226 | 3.7M $ | 0.18 % |
| Caris Life Sciences Inc | 177,080 | 3.6M $ | 0.17 % |
| Absci Corp | 1,263,891 | 3.5M $ | 0.17 % |
| BETA TECHNOLOGIES INC | 164,924 | 3.1M $ | 0.15 % |