Holdings (Monthly)
Guide ↗
MFS New Discovery Fund
· Mfs Series Trust I| # | Name | Ticker | Since | Shares | Shares Δ | Value | Val Δ% | % Port | Cat |
|---|---|---|---|---|---|---|---|---|---|
| 1 | JP Morgan US Government Money Market Fund | 4812C2270 | Feb 2026 | 90,188,868 | +68,793,465 | $90.2M | +321.5% | 4.21% | STIV |
| 2 | MFS Institutional Money Market Portfolio | 55291X109 | Feb 2026 | 85,367,303 | -17,815,325 | $85.4M | -17.3% | 3.99% | EC |
| 3 | Advanced Energy Industries Inc | 007973100 | Feb 2026 | 166,070 | -15,194 | $50.2M | -17.5% | 2.34% | EC |
| 4 | Littelfuse Inc | 537008104 | Feb 2026 | 100,461 | +3,939 | $46.9M | +37.9% | 2.19% | EC |
| 5 | TTM Technologies Inc | 87305R109 | Feb 2026 | 245,417 | -19,423 | $42.6M | +54.4% | 1.99% | EC |
| 6 | Element Solutions Inc | 28618M106 | Feb 2026 | 973,308 | +315,511 | $41.3M | +78.9% | 1.93% | EC |
| 7 | Ligand Pharmaceuticals Inc | 53220K504 | Feb 2026 | 175,886 | -64,744 | $40.8M | -14.5% | 1.91% | EC |
| 8 | CACI International Inc | 127190304 | Feb 2026 | 78,098 | +31,379 | $40.1M | +40.7% | 1.87% | EC |
| 9 | Leonardo DRS Inc | 52661A108 | Feb 2026 | 774,855 | +124,136 | $37.8M | +33.8% | 1.76% | EC |
| 10 | Bloom Energy Corp | 093712107 | Feb 2026 | 125,732 | -36,326 | $35.8M | +42.0% | 1.67% | EC |
| 11 | Bio-Techne Corp | 09073M104 | Feb 2026 | 677,854 | +33,077 | $35.0M | -7.9% | 1.64% | EC |
| 12 | Charles River Laboratories International Inc | 159864107 | Feb 2026 | 185,265 | +33,489 | $33.5M | +23.6% | 1.56% | EC |
| 13 | Chefs' Warehouse Inc/The | 163086101 | Feb 2026 | 427,455 | -12,453 | $32.7M | +4.2% | 1.53% | EC |
| 14 | FormFactor Inc | 346375108 | Feb 2026 | 258,502 | -28,736 | $32.2M | +13.4% | 1.50% | EC |
| 15 | QXO Inc | 82846H405 | Feb 2026 | 1,764,764 | -185,105 | $30.4M | -34.8% | 1.42% | EC |
| 16 | Integer Holdings Corp | 45826H109 | Feb 2026 | 332,845 | — | $29.7M | +3.1% | 1.39% | EC |
| 17 | Legence Corp | 52476L109 | Feb 2026 | 355,258 | -178,759 | $29.7M | -4.0% | 1.39% | EC |
| 18 | Primoris Services Corp | 74164F103 | Feb 2026 | 235,887 | +31,639 | $29.7M | -3.6% | 1.39% | EC |
| 19 | Finning International Inc | 318071404 | May 2026 | 379,063 | NEW | $28.6M | — | 1.34% | EC |
| 20 | Modine Manufacturing Co | 607828100 | Feb 2026 | 102,578 | -74,846 | $28.6M | -29.0% | 1.34% | EC |
| 21 | Donaldson Co Inc | 257651109 | May 2026 | 347,248 | NEW | $28.4M | — | 1.33% | EC |
| 22 | Waystar Holding Corp | 946784105 | Feb 2026 | 1,416,610 | +486,847 | $28.2M | +18.3% | 1.32% | EC |
| 23 | Merit Medical Systems Inc | 589889104 | May 2026 | 444,414 | NEW | $28.0M | — | 1.31% | EC |
| 24 | JFrog Ltd | 000000000 | Feb 2026 | 334,124 | +205,326 | $26.6M | +192.6% | 1.24% | EC |
| 25 | Terreno Realty Corp | 88146M101 | Feb 2026 | 392,928 | -38,161 | $25.8M | -9.4% | 1.21% | EC |
| 26 | Guardant Health Inc | 40131M109 | Feb 2026 | 198,239 | +25,996 | $25.7M | +59.0% | 1.20% | EC |
| 27 | PJT Partners Inc | 69343T107 | Feb 2026 | 165,957 | +13,884 | $25.4M | +13.0% | 1.18% | EC |
| 28 | MACOM Technology Solutions Holdings Inc | 55405Y100 | Feb 2026 | 68,537 | -87,845 | $25.0M | -35.6% | 1.17% | EC |
| 29 | Flowserve Corp | 34354P105 | Feb 2026 | 320,714 | -43,824 | $24.2M | -25.0% | 1.13% | EC |
| 30 | James Hardie Industries PLC | 000000000 | Feb 2026 | 1,021,281 | NEW | $23.8M | — | 1.11% | EC |
| 31 | IonQ Inc | 46222L108 | May 2026 | 326,442 | NEW | $23.5M | — | 1.10% | EC |
| 32 | Timken Co/The | 887389104 | May 2026 | 175,395 | NEW | $22.4M | — | 1.05% | EC |
| 33 | Box Inc | 10316T104 | Feb 2026 | 827,966 | +153,228 | $22.3M | +40.5% | 1.04% | EC |
| 34 | Ollie's Bargain Outlet Holdings Inc | 681116109 | Feb 2026 | 266,895 | +54,712 | $21.8M | -4.1% | 1.02% | EC |
| 35 | Simpson Manufacturing Co Inc | 829073105 | Feb 2026 | 114,246 | — | $21.7M | -2.0% | 1.01% | EC |
| 36 | SSR Mining Inc | 784730103 | May 2026 | 694,087 | NEW | $21.7M | — | 1.01% | EC |
| 37 | Digi International Inc | 253798102 | May 2026 | 319,218 | NEW | $21.3M | — | 1.00% | EC |
| 38 | Oceaneering International Inc | 675232102 | May 2026 | 554,753 | NEW | $21.2M | — | 0.99% | EC |
| 39 | nVent Electric PLC | 000000000 | Feb 2026 | 126,729 | NEW | $21.2M | — | 0.99% | EC |
| 40 | Birkenstock Holding Plc | 000000000 | Feb 2026 | 467,181 | NEW | $21.1M | — | 0.98% | EC |
| 41 | BioLife Solutions Inc | 09062W204 | Feb 2026 | 844,897 | +141,893 | $21.1M | +23.8% | 0.98% | EC |
| 42 | TopBuild Corp | 89055F103 | Feb 2026 | 49,995 | -17,960 | $20.9M | -31.5% | 0.97% | EC |
| 43 | Ionis Pharmaceuticals Inc | 462222100 | Feb 2026 | 262,553 | -43,887 | $20.1M | -19.2% | 0.94% | EC |
| 44 | Knife River Corp | 498894104 | Feb 2026 | 250,790 | -68,030 | $19.7M | -30.6% | 0.92% | EC |
| 45 | Collegium Pharmaceutical Inc | 19459J104 | Feb 2026 | 585,155 | +46,210 | $19.7M | -12.4% | 0.92% | EC |
| 46 | XPO Inc | 983793100 | Feb 2026 | 91,336 | -55,177 | $19.6M | -36.5% | 0.91% | EC |
| 47 | UFP Technologies Inc | 902673102 | Feb 2026 | 87,878 | +6,940 | $19.3M | +13.5% | 0.90% | EC |
| 48 | MYR Group Inc | 55405W104 | May 2026 | 41,567 | NEW | $19.3M | — | 0.90% | EC |
| 49 | Semtech Corp | 816850101 | May 2026 | 124,394 | NEW | $19.0M | — | 0.89% | EC |
| 50 | Schrodinger Inc/United States | 80810D103 | Feb 2026 | 1,213,659 | -726,314 | $18.4M | -21.2% | 0.86% | EC |
| 51 | Ascendis Pharma A/S | 000000000 | Feb 2026 | 81,267 | NEW | $18.2M | — | 0.85% | EC |
| 52 | Uranium Energy Corp | 916896103 | Feb 2026 | 1,271,315 | +343,314 | $17.5M | +23.1% | 0.82% | EC |
| 53 | WisdomTree Inc | 97717P104 | Feb 2026 | 916,031 | -187,308 | $17.5M | -7.6% | 0.81% | EC |
| 54 | Brunswick Corp/DE | 117043109 | Feb 2026 | 201,916 | -73,905 | $16.9M | -23.0% | 0.79% | EC |
| 55 | Visteon Corp | 92839U206 | Feb 2026 | 139,242 | +7,005 | $16.5M | +30.2% | 0.77% | EC |
| 56 | Iridium Communications Inc | 46269C102 | May 2026 | 310,763 | NEW | $16.1M | — | 0.75% | EC |
| 57 | nLight Inc | 65487K100 | Feb 2026 | 213,255 | -354,761 | $15.8M | -50.5% | 0.74% | EC |
| 58 | Dutch Bros Inc | 26701L100 | Feb 2026 | 271,758 | -48,411 | $15.8M | -8.2% | 0.74% | EC |
| 59 | Cytokinetics Inc | 23282W605 | Feb 2026 | 202,120 | — | $15.5M | +23.4% | 0.72% | EC |
| 60 | CCC Intelligent Solutions Holdings Inc | 12510Q100 | Feb 2026 | 3,278,853 | +232,491 | $15.4M | -13.2% | 0.72% | EC |
| 61 | Corsair Gaming Inc | 22041X102 | Feb 2026 | 1,261,615 | -422,372 | $15.3M | +65.7% | 0.72% | EC |
| 62 | Lincoln International Inc | 533714101 | May 2026 | 670,570 | NEW | $15.3M | — | 0.71% | EC |
| 63 | GFL Environmental Inc | 36168Q104 | Feb 2026 | 454,930 | +162,793 | $15.3M | +18.2% | 0.71% | EC |
| 64 | Columbia Sportswear Co | 198516106 | Feb 2026 | 224,920 | — | $14.9M | +6.8% | 0.70% | EC |
| 65 | Installed Building Products Inc | 45780R101 | May 2026 | 70,652 | NEW | $14.8M | — | 0.69% | EC |
| 66 | Knight-Swift Transportation Holdings Inc | 499049104 | Feb 2026 | 191,409 | -36,286 | $14.5M | +1.0% | 0.68% | EC |
| 67 | Kiniksa Pharmaceuticals International Plc | 000000000 | Feb 2026 | 298,137 | NEW | $14.4M | — | 0.67% | EC |
| 68 | Antero Resources Corp | 03674X106 | Feb 2026 | 380,755 | -66,086 | $13.6M | -17.2% | 0.64% | EC |
| 69 | Hawkeye 360 Inc | 420201105 | May 2026 | 395,435 | NEW | $13.1M | — | 0.61% | EC |
| 70 | Globus Medical Inc | 379577208 | Feb 2026 | 158,271 | -33,622 | $13.0M | -29.3% | 0.61% | EC |
| 71 | Patrick Industries Inc | 703343103 | Feb 2026 | 142,294 | -52,245 | $12.9M | -46.5% | 0.60% | EC |
| 72 | Cogent Biosciences Inc | 19240Q201 | Feb 2026 | 366,818 | +55,910 | $12.8M | +6.2% | 0.60% | EC |
| 73 | Benchmark Electronics Inc | 08160H101 | May 2026 | 151,309 | NEW | $12.8M | — | 0.60% | EC |
| 74 | Azenta Inc | 114340102 | Feb 2026 | 556,939 | -75,666 | $12.7M | -25.3% | 0.60% | EC |
| 75 | IRhythm Holdings Inc | 450056106 | Feb 2026 | 110,994 | — | $12.6M | -14.8% | 0.59% | EC |
| 76 | Adaptive Biotechnologies Corp | 00650F109 | Feb 2026 | 786,166 | +135,696 | $11.9M | +14.3% | 0.56% | EC |
| 77 | Miami International Holdings Inc | 59356Q108 | Feb 2026 | 249,676 | +48,039 | $11.8M | +37.3% | 0.55% | EC |
| 78 | Advanced Drainage Systems Inc | 00790R104 | Feb 2026 | 83,668 | — | $11.6M | -18.8% | 0.54% | EC |
| 79 | Blackstone Digital Infrastructure Trust Inc | 09264B107 | May 2026 | 530,746 | NEW | $11.5M | — | 0.54% | EC |
| 80 | Legend Biotech Corp | 52490G102 | Feb 2026 | 421,581 | — | $11.5M | +42.9% | 0.53% | EC |
| 81 | US Foods Holding Corp | 912008109 | Feb 2026 | 139,808 | — | $11.4M | -15.3% | 0.53% | EC |
| 82 | Covista Inc | 00737L103 | Feb 2026 | 95,560 | -26,549 | $11.3M | -5.9% | 0.53% | EC |
| 83 | Matador Resources Co | 576485205 | Feb 2026 | 204,291 | -116,253 | $10.9M | -33.5% | 0.51% | EC |
| 84 | VeraDermics Inc | 922967104 | May 2026 | 108,307 | NEW | $10.9M | — | 0.51% | EC |
| 85 | Kymera Therapeutics Inc | 501575104 | Feb 2026 | 133,236 | -28,104 | $10.8M | -26.4% | 0.51% | EC |
| 86 | Neurocrine Biosciences Inc | 64125C109 | Feb 2026 | 68,514 | — | $10.8M | +19.7% | 0.51% | EC |
| 87 | TechnipFMC PLC | 000000000 | Feb 2026 | 158,355 | NEW | $10.8M | — | 0.51% | EC |
| 88 | Mirion Technologies Inc | 60471A101 | Feb 2026 | 577,405 | — | $10.6M | -15.4% | 0.49% | EC |
| 89 | Arxis Inc | 04339D105 | May 2026 | 228,896 | NEW | $10.3M | — | 0.48% | EC |
| 90 | StandardAero Inc | 85423L103 | Feb 2026 | 345,690 | -298,309 | $9.9M | -50.1% | 0.46% | EC |
| 91 | Amprius Technologies Inc | 03214Q108 | Feb 2026 | 484,851 | -1,137,268 | $9.8M | -43.5% | 0.46% | EC |
| 92 | NPK International Inc | 651718504 | May 2026 | 671,078 | NEW | $9.7M | — | 0.46% | EC |
| 93 | Aevex Corp | 00835T107 | May 2026 | 246,504 | NEW | $9.5M | — | 0.44% | EC |
| 94 | AtriCure Inc | 04963C209 | Feb 2026 | 341,866 | -132,908 | $9.5M | -36.3% | 0.44% | EC |
| 95 | HeartFlow Inc | 42238D107 | May 2026 | 301,955 | NEW | $9.4M | — | 0.44% | EC |
| 96 | Immunocore Holdings PLC | 45258D105 | Feb 2026 | 304,295 | — | $8.8M | -10.6% | 0.41% | EC |
| 97 | Sportradar Group AG | 000000000 | Feb 2026 | 657,847 | NEW | $8.7M | — | 0.41% | EC |
| 98 | Pulse Biosciences Inc | 74587B101 | May 2026 | 339,453 | NEW | $8.5M | — | 0.40% | EC |
| 99 | DigitalOcean Holdings Inc | 25402D102 | May 2026 | 52,693 | NEW | $8.2M | — | 0.38% | EC |
| 100 | Procept Biorobotics Corp | 74276L105 | Feb 2026 | 311,569 | +117,510 | $8.2M | +86.3% | 0.38% | EC |
| 101 | Q2 Holdings Inc | 74736L109 | Feb 2026 | 171,035 | -128,066 | $8.1M | -43.7% | 0.38% | EC |
| 102 | Viper Energy Inc | 64361Q101 | Feb 2026 | 176,639 | -176,290 | $8.0M | -51.1% | 0.38% | EC |
| 103 | GCM Grosvenor Inc | 36831E108 | Feb 2026 | 751,633 | -328,819 | $8.0M | -36.1% | 0.37% | EC |
| 104 | Mirum Pharmaceuticals Inc | 604749101 | May 2026 | 78,586 | NEW | $8.0M | — | 0.37% | EC |
| 105 | Praxis Precision Medicines Inc | 74006W207 | May 2026 | 21,831 | NEW | $7.6M | — | 0.36% | EC |
| 106 | Oruka Therapeutics Inc | 687604108 | May 2026 | 121,469 | NEW | $7.1M | — | 0.33% | EC |
| 107 | Ceribell Inc | 15678C102 | Feb 2026 | 376,698 | — | $7.0M | -1.2% | 0.32% | EC |
| 108 | Once Upon a Farm PBC | 68237F108 | Feb 2026 | 438,415 | -46,178 | $6.8M | -39.8% | 0.32% | EC |
| 109 | Tempus AI Inc | 88023B103 | Feb 2026 | 129,240 | +42,462 | $6.5M | +41.2% | 0.30% | EC |
| 110 | CG oncology Inc | 156944100 | Feb 2026 | 100,229 | — | $6.2M | +5.9% | 0.29% | EC |
| 111 | Tarsus Pharmaceuticals Inc | 87650L103 | May 2026 | 100,257 | NEW | $6.0M | — | 0.28% | EC |
| 112 | Harmony Biosciences Holdings Inc | 413197104 | Feb 2026 | 180,966 | — | $5.7M | +10.7% | 0.27% | EC |
| 113 | Billiontoone Inc | 090168105 | Feb 2026 | 53,322 | — | $5.3M | +29.7% | 0.25% | EC |
| 114 | Ultragenyx Pharmaceutical Inc | 90400D108 | Feb 2026 | 175,165 | — | $4.2M | +2.4% | 0.20% | EC |
| 115 | Black Rock Coffee Bar Inc | 092244102 | Feb 2026 | 485,111 | -325,552 | $4.0M | -62.7% | 0.19% | EC |
| 116 | Annexon Inc | 03589W102 | Feb 2026 | 668,226 | — | $3.6M | -3.2% | 0.17% | EC |
| 117 | Caris Life Sciences Inc | 142152107 | Feb 2026 | 177,080 | — | $3.0M | -17.0% | 0.14% | EC |
| 118 | OPTINOSE INC | 68404V118 | Feb 2026 | 4 | — | $1 | +0.0% | 0.00% | DE |
| 119 | CONTRA BLUEPRINT MEDIC | 096CVR048 | Feb 2026 | 40,783 | — | $0 | — | 0.00% | DE |
| ✕ | Crane Co | 224408104 | — | 154,058 | SOLD | $30.9M | — | — | — |
| ✕ | Hamilton Lane Inc | 407497106 | — | 256,114 | SOLD | $26.9M | — | — | — |
| ✕ | Ascendis Pharma A/S | 04351P101 | — | 81,267 | SOLD | $19.0M | — | — | — |
| ✕ | Alkami Technology Inc | 01644J108 | — | 1,098,764 | SOLD | $18.2M | — | — | — |
| ✕ | GeneDx Holdings Corp | 81663L200 | — | 214,387 | SOLD | $17.1M | — | — | — |
| ✕ | Align Technology Inc | 016255101 | — | 77,293 | SOLD | $14.7M | — | — | — |
| ✕ | Netskope Inc | 64119N608 | — | 1,314,788 | SOLD | $14.2M | — | — | — |
| ✕ | Permian Resources Corp | 71424F105 | — | 735,469 | SOLD | $13.5M | — | — | — |
| ✕ | Karman Holdings Inc | 485924104 | — | 133,200 | SOLD | $11.7M | — | — | — |
| ✕ | Independence Realty Trust Inc | 45378A106 | — | 639,578 | SOLD | $10.6M | — | — | — |
| ✕ | Pegasystems Inc | 705573103 | — | 232,383 | SOLD | $10.2M | — | — | — |
| ✕ | StepStone Group Inc | 85914M107 | — | 183,841 | SOLD | $7.9M | — | — | — |
| ✕ | York Space Systems Inc | 987084100 | — | 254,216 | SOLD | $6.5M | — | — | — |
| ✕ | Bitgo Holdings Inc | 091947101 | — | 487,596 | SOLD | $4.8M | — | — | — |
| ✕ | Absci Corp | 00091E109 | — | 1,263,891 | SOLD | $3.5M | — | — | — |
| ✕ | Beta Technologies Inc | 086921103 | — | 164,924 | SOLD | $3.1M | — | — | — |