FundWatcher
MNDRX
MFS New Discovery Fund
MFS SERIES TRUST I

Portfolio moves

Net position changes between two of this fund's N-PORT snapshots. These are differences between point-in-time reports — not a trade log — and share counts can be affected by splits and other corporate actions.

Nov 30, 2025 → Feb 28, 2026

Expand a category to see the positions behind it, ranked by weight.

Security Shares Nov 2025 Shares Feb 2026 Δ shares End % Δ value
LEONARDO DRS INC 0 650,719 650,719 1.34% $28.23M
WAYSTAR HOLDING CORP 0 929,763 929,763 1.13% $23.85M
ELEMENT SOLUTIONS INC 0 657,797 657,797 1.09% $23.08M
AMPRIUS TECHNOLOGIES INC 0 1,622,119 1,622,119 0.82% $17.41M
DUTCH BROS INC-A 0 320,169 320,169 0.81% $17.16M
COGENT BIOSCIENCES INC 0 310,908 310,908 0.57% $12.08M
ONCE UPON A FARM 0 484,593 484,593 0.53% $11.25M
YORK SPACE SYSTE 0 254,216 254,216 0.31% $6.51M
BITGO HOLDINGS-A 0 487,596 487,596 0.23% $4.80M
Security Shares Nov 2025 Shares Feb 2026 Δ shares End % Δ value
MASIMO CORP 144,276 0 -144,276 0.00% -$20.55M
VERTEX INC - CLASS A 1,033,131 0 -1,033,131 0.00% -$20.32M
WINGSTOP INC 74,661 0 -74,661 0.00% -$19.77M
AMICUS THERAPEUTICS INC 1,746,157 0 -1,746,157 0.00% -$17.34M
ONESTREAM INC 771,401 0 -771,401 0.00% -$16.07M
DIGITALBRIDGE GROUP INC 1,650,113 0 -1,650,113 0.00% -$16.02M
ACV AUCTIONS INC CL A 1,846,899 0 -1,846,899 0.00% -$14.50M
KINAXIS INC 104,388 0 -104,388 0.00% -$13.06M
HEALTHEQUITY INC 109,619 0 -109,619 0.00% -$11.53M
SENTINELONE INC 673,457 0 -673,457 0.00% -$10.92M
ODDITY TECH LTD A 248,550 0 -248,550 0.00% -$10.75M
ELASTIC NV 119,540 0 -119,540 0.00% -$8.43M
RB GLOBAL INC 77,828 0 -77,828 0.00% -$7.64M
SERVICETITAN INC-A 82,369 0 -82,369 0.00% -$7.36M
BULLISH 134,283 0 -134,283 0.00% -$5.86M
CERTARA INC 627,380 0 -627,380 0.00% -$5.75M
FRACTYL HEALTH INC 639,147 0 -639,147 0.00% -$1.00M
Security Shares Nov 2025 Shares Feb 2026 Δ shares End % Δ value
MFS Institutional Money Market Portfolio, Class A 75,646,747 103,182,629 27,535,882 4.88% $27.53M
QXO INC 1,778,105 1,949,869 171,764 2.21% $13.40M
BIO-TECHNE CORP 627,645 644,777 17,132 1.80% -$2.45M
CHEFS WAREHOUSE INC 366,866 439,908 73,042 1.49% $8.91M
LEGENCE CORP-A 443,583 534,017 90,434 1.47% $10.60M
JFROG LTD 662,069 770,563 108,494 1.46% -$9.43M
CRANE CO 143,886 154,058 10,172 1.46% $4.53M
TOPBUILD CORP 62,950 67,955 5,005 1.44% $1.98M
CACI INTL-A 38,976 46,719 7,743 1.35% $4.45M
CHARLES RIVER LABS INTL INC 105,620 151,776 46,156 1.28% $8.28M
HAMILTON LANE INC - A 157,836 256,114 98,278 1.27% $7.32M
SCHRODINGER INC 1,653,720 1,939,973 286,253 1.11% -$5.64M
OLLIES BARGAIN OUTLET HOLDINGS INC 79,935 212,183 132,248 1.08% $12.88M
PJT PARTNERS INC 141,582 152,073 10,491 1.06% -$1.33M
SIMPSON MFG 75,371 114,246 38,875 1.05% $9.50M
STANDARDAERO INC 421,150 643,999 222,849 0.94% $8.83M
ALKAMI TECHNOLOGY INC 1,093,141 1,098,764 5,623 0.86% -$5.13M
GENIUS SPORTS LTD 2,765,100 2,900,461 135,361 0.85% -$9.83M
BIRKENSTOCK HOLDING LTD 294,962 427,501 132,539 0.84% $5.02M
CCC INTELLIGENT SOLUTIONS HOLD CL A 2,663,900 3,046,362 382,462 0.84% -$2.09M
GENEDX HOLDINGS CORP-A 118,373 214,387 96,014 0.81% -$2.67M
AZENTA INC 289,128 632,605 343,477 0.81% $6.79M
BOX INC- CLASS A 540,501 674,738 134,237 0.75% -$76.32K
IRHYTHM TECHNOLOGIES INC 99,326 110,994 11,668 0.70% -$3.83M
ATRICURE INC 288,339 474,774 186,435 0.70% $4.43M
Sportradar Holding AG 719,358 808,772 89,414 0.70% -$1.06M
NETSKOPE INC-A 950,658 1,314,788 364,130 0.67% -$3.27M
COLUMBIA SPORTSWEAR CO 168,490 224,920 56,430 0.66% $4.88M
KINIKSA PHARMACEUTICALS INTERNATIONAL PLC 264,751 298,137 33,386 0.63% $2.01M
WIX.COM LTD 79,113 128,798 49,685 0.43% $1.50M
LEGEND BIOTECH CORP SPON ADR 353,267 421,581 68,314 0.38% -$1.78M
TEMPUS AI INC-A 56,384 86,778 30,394 0.22% $226.92K
Security Shares Nov 2025 Shares Feb 2026 Δ shares End % Δ value
ADV ENERGY INDS 235,818 181,264 -54,554 2.88% $11.02M
MODINE MFG CO 203,273 177,424 -25,849 1.91% $7.36M
NVENT ELECTRIC PLC 408,652 331,297 -77,355 1.86% -$4.62M
MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC 187,911 156,382 -31,529 1.84% $5.92M
LITTELFUSE INC 106,274 96,522 -9,752 1.61% $6.81M
FLOWSERVE CORP 476,389 364,538 -111,851 1.53% -$1.72M
PRIMORIS SVCS CORP 217,040 204,248 -12,792 1.46% $3.32M
FORMFACTOR INC 513,599 287,238 -226,361 1.34% $143.88K
KNIFE RIVER HOLDING CO W/I 356,960 318,820 -38,140 1.34% $1.65M
TTM TECHNOLOGIES INC 357,441 264,840 -92,601 1.31% $2.52M
PATRICK INDUSTRIES INC 224,337 194,539 -29,798 1.14% -$195.77K
TECHNIPFMC PLC 434,895 343,557 -91,338 1.08% $3.10M
BRUNSWICK CORP 317,612 275,821 -41,791 1.04% $963.54K
JPMORGAN US GOVERNMENT MONEY MARKET FUND OPEN-END FUND USD 21,609,588 21,395,403 -214,185 1.01% -$214.19K
Ascendis Pharma A/S 102,033 81,267 -20,766 0.90% -$2.69M
WISDOMTREE INVESTMENTS INC 1,741,562 1,103,339 -638,223 0.89% -$348.71K
UFP TECHNOLOGIES INC 89,479 80,938 -8,541 0.81% -$3.24M
MATADOR RESOURCES COMPANY 348,555 320,544 -28,011 0.78% $1.70M
VIPER ENERGY INC A 426,238 352,929 -73,309 0.78% $854.84K
KYMERA THERAPEUTICS INC 231,386 161,340 -70,046 0.70% -$968.07K
ALIGN TECHNOLOGY INC 138,439 77,293 -61,146 0.70% -$5.68M
Q2 HOLDINGS INC 302,501 299,101 -3,400 0.68% -$7.43M
KNIGHT-SWIFT TRANSPORTATION HOLDINGS INC 307,648 227,695 -79,953 0.68% $236.29K
URANIUM ENERGY CORP 1,185,099 928,001 -257,098 0.67% -$314.91K
US FOODS HOLDING CORP 230,114 139,808 -90,306 0.64% -$4.60M
VISTEON CORP 179,179 132,237 -46,942 0.60% -$5.85M
CYTOKINETICS INC 261,666 202,120 -59,546 0.60% -$5.25M
MIRION TECHNOLOGIES INC-A 721,260 577,405 -143,855 0.59% -$6.29M
COVISTA INC 140,452 122,109 -18,343 0.57% -$1.03M
KARMAN HOLDINGS INC 215,547 133,200 -82,347 0.56% -$2.71M
INDEPENDENCE REALTY TR INC 1,195,239 639,578 -555,661 0.50% -$9.90M
PEGASYSTEMS INC 453,266 232,383 -220,883 0.48% -$14.66M
NEUROCRINE BIOSCIENCES INC 86,794 68,514 -18,280 0.43% -$4.15M
STEPSTONE GROUP INC CLASS A 412,555 183,841 -228,714 0.38% -$18.13M
CG ONCOLOGY INC 148,150 100,229 -47,921 0.28% -$749.58K
HARMONY BIOSCIENCES HOLDINGS INC 387,371 180,966 -206,405 0.24% -$8.51M
ULTRAGENYX PHARMA INC 211,945 175,165 -36,780 0.19% -$3.27M
Security Shares Nov 2025 Shares Feb 2026 Δ shares End % Δ value
LIGAND PHARMACEUTICALS 240,630 240,630 0 2.26% -$1.17M
NLIGHT INC 568,016 568,016 0 1.51% $11.91M
XPO LOGISTICS INC 146,513 146,513 0 1.46% $10.02M
INTEGER HOLDINGS CORP 332,845 332,845 0 1.37% $4.83M
TERRENO REALTY CORP 431,089 431,089 0 1.35% $1.41M
BLOOM ENERGY CORP CL A 162,058 162,058 0 1.19% $7.52M
James Hardie Industries Public Limited Company 1,021,281 1,021,281 0 1.18% $4.67M
IONIS PHARMACEUTICALS INC 306,440 306,440 0 1.18% -$484.18K
COLLEGIUM PHARMACEUTICAL INC 538,945 538,945 0 1.06% -$2.70M
GLOBUS MEDICAL INC 191,893 191,893 0 0.87% $848.17K
BIOLIFE SOLUTIONS INC 703,004 703,004 0 0.81% -$1.62M
ANTERO RESOURCES 446,841 446,841 0 0.78% $169.80K
GUARDANT HEALTH INC 172,243 172,243 0 0.77% -$2.50M
ADVANCED DRAINAGE SYSTEMS INC 83,668 83,668 0 0.68% $1.59M
PERMIAN RESOURCES CORP CL A 735,469 735,469 0 0.64% $2.79M
GFL ENVIRONM-SUB 292,137 292,137 0 0.61% -$373.94K
GCM GROSVENOR INC - CLASS A 1,080,452 1,080,452 0 0.59% $648.27K
BLACK ROCK COFFEE BAR INC 810,663 810,663 0 0.51% -$7.63M
ADAPTIVE BIOTECHNOLOGIES CORP 650,470 650,470 0 0.49% -$2.37M
Immunocore Holdings plc ADS 304,295 304,295 0 0.47% -$2.19M
CORSAIR GAMING INC 1,683,987 1,683,987 0 0.44% -$1.73M
MIAMI INTERNATIONAL HOLDINGS INC 201,637 201,637 0 0.41% -$606.93K
CERIBELL INC 376,698 376,698 0 0.33% $640.39K
PROCEPT BIOROBOTICS CORP 194,059 194,059 0 0.21% -$1.74M
BILLIONTOONE INC 53,322 53,322 0 0.19% -$2.87M
ANNEXON INC 668,226 668,226 0 0.18% $735.05K
CARIS LIFE SCIENCES INC 177,080 177,080 0 0.17% -$954.46K
ABSCI CORP 1,263,891 1,263,891 0 0.16% -$543.47K
BETA TECHNOLOGIES INC 164,924 164,924 0 0.15% -$1.40M
OPTINOSE INC WT 11/23/27 4 4 0 0.00% $0
CONTRA BLUEPRINT MEDIC COMMON STOCK 40,783 40,783 0 0.00% $0

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