WESTFIELD CAPITAL MANAGEMENT CO LP
Comparing Q4 2025 vs Q3 2025
Sorting applies to all holdings for this quarter on the server, then the page is sliced. Prior-quarter values come from the full prior-quarter filing.
Issuer ▲▼ | Shares | Value ($K) | ||||
|---|---|---|---|---|---|---|
Q3 2025 ▲▼ | Q4 2025 ▲▼ | Change ▲▼ | Q3 2025 ▲▼ | Q4 2025 ▲▼ | Change ▲▼ | |
| ABIVAX SA | 0 | 1,009,966 | +1,009,966 | 0 | 136,198,965 | +136,198,965 |
| ALPHABET INC | 2,244,650 | 2,178,478 | -66,172 | 545,674,381 | 681,863,695 | +136,189,314 |
| API GROUP CORP | 0 | 3,453,355 | +3,453,355 | 0 | 132,125,362 | +132,125,362 |
| AMETEK INC | 358,660 | 900,216 | +541,556 | 67,428,017 | 184,823,313 | +117,395,296 |
| REVOLUTION MEDICINES INC | 2,513,967 | 2,845,013 | +331,046 | 117,402,259 | 226,605,319 | +109,203,060 |
| DUTCH BROS INC | 0 | 1,779,616 | +1,779,616 | 0 | 108,948,092 | +108,948,092 |
| FTAI AVIATION LTD | 2,130,241 | 2,350,625 | +220,384 | 355,452,013 | 462,720,531 | +107,268,518 |
| FIFTH THIRD BANCORP | 1,619,948 | 3,746,926 | +2,126,978 | 72,168,685 | 175,393,613 | +103,224,928 |
| MKS INC. | 323,364 | 839,773 | +516,409 | 40,022,762 | 134,195,725 | +94,172,963 |
| ABBVIE INC | 7,928 | 419,784 | +411,856 | 1,835,649 | 95,916,495 | +94,080,846 |
| ELI LILLY & CO | 277,005 | 277,549 | +544 | 211,354,506 | 298,276,527 | +86,922,021 |
| ATLASSIAN CORPORATION | 322,438 | 812,215 | +489,777 | 51,493,293 | 131,692,460 | +80,199,167 |
| HUBSPOT INC | 134,175 | 352,154 | +217,979 | 62,767,075 | 141,319,255 | +78,552,180 |
| GENEDX HOLDINGS CORP | 544,094 | 1,018,261 | +474,167 | 58,620,688 | 132,435,026 | +73,814,338 |
| DANAHER CORPORATION | 4,953 | 321,487 | +316,534 | 981,982 | 73,594,775 | +72,612,793 |
| NATERA INC | 575,802 | 714,692 | +138,890 | 92,686,899 | 163,728,859 | +71,041,960 |
| CELSIUS HLDGS INC | 0 | 1,544,215 | +1,544,215 | 0 | 70,632,394 | +70,632,394 |
| LEGENCE CORP | 0 | 1,613,326 | +1,613,326 | 0 | 69,437,551 | +69,437,551 |
| GARMIN LTD | 0 | 335,744 | +335,744 | 0 | 68,105,623 | +68,105,623 |
| F5 INC | 16,220 | 281,299 | +265,079 | 5,242,142 | 71,804,383 | +66,562,241 |
| ADAPTIVE BIOTECHNOLOGIES COR | 0 | 4,060,481 | +4,060,481 | 0 | 65,942,211 | +65,942,211 |
| ROCKET LAB CORP | 2,437,820 | 2,592,443 | +154,623 | 116,795,956 | 180,848,824 | +64,052,868 |
| ZSCALER INC | 0 | 280,807 | +280,807 | 0 | 63,159,107 | +63,159,107 |
| HOWMET AEROSPACE INC | 2,007,453 | 2,219,125 | +211,672 | 393,922,429 | 454,964,962 | +61,042,533 |
| MOODYS CORP | 0 | 118,321 | +118,321 | 0 | 60,444,231 | +60,444,231 |
| ASCENDIS PHARMA A/S | 5,259,909 | 5,185,696 | -74,213 | 1,045,722,561 | 1,105,797,733 | +60,075,172 |
| PACKAGING CORP AMER | 0 | 284,914 | +284,914 | 0 | 58,757,814 | +58,757,814 |
| BIO-TECHNE CORP | 0 | 994,330 | +994,330 | 0 | 58,476,547 | +58,476,547 |
| DORMAN PRODS INC | 0 | 462,212 | +462,212 | 0 | 56,939,896 | +56,939,896 |
| GUARDANT HEALTH INC | 0 | 539,190 | +539,190 | 0 | 55,072,867 | +55,072,867 |
| ADVANCED MICRO DEVICES INC | 0 | 250,455 | +250,455 | 0 | 53,637,377 | +53,637,377 |
| ADMA BIOLOGICS INC | 5,106,802 | 6,992,907 | +1,886,105 | 74,865,717 | 127,550,624 | +52,684,907 |
| HAMILTON LANE INC | 0 | 363,487 | +363,487 | 0 | 48,819,939 | +48,819,939 |
| INSULET CORP | 201,387 | 386,468 | +185,081 | 62,174,302 | 109,849,805 | +47,675,503 |
| SALESFORCE INC | 0 | 178,508 | +178,508 | 0 | 47,288,601 | +47,288,601 |
| PARKER-HANNIFIN CORP | 7,172 | 57,873 | +50,701 | 5,437,452 | 50,868,052 | +45,430,600 |
| HILTON WORLDWIDE HLDGS INC | 233,718 | 357,721 | +124,003 | 60,635,726 | 102,755,321 | +42,119,595 |
| APPLE INC | 3,334,545 | 3,274,318 | -60,227 | 849,075,305 | 890,156,149 | +41,080,844 |
| PERMIAN RESOURCES CORP | 3,357,716 | 5,951,186 | +2,593,470 | 42,978,765 | 83,495,140 | +40,516,375 |
| IDEXX LABS INC | 94,129 | 147,447 | +53,318 | 60,138,155 | 99,752,238 | +39,614,083 |
| TRANE TECHNOLOGIES PLC | 15,916 | 118,163 | +102,247 | 6,715,915 | 45,989,190 | +39,273,275 |
| EAST WEST BANCORP INC | 589,535 | 874,152 | +284,617 | 62,756,001 | 98,245,943 | +35,489,942 |
| BURLINGTON STORES INC | 205,895 | 302,307 | +96,412 | 52,400,344 | 87,321,512 | +34,921,168 |
| AVIDITY BIOSCIENCES INC | 0 | 471,127 | +471,127 | 0 | 33,982,391 | +33,982,391 |
| IMAX CORP | 1,622,625 | 2,346,486 | +723,861 | 53,140,969 | 86,726,123 | +33,585,154 |
| LPL FINL HLDGS INC | 575,462 | 625,562 | +50,100 | 191,450,388 | 223,431,883 | +31,981,495 |
| VERTIV HOLDINGS CO | 2,247,218 | 2,277,716 | +30,498 | 339,015,337 | 369,012,808 | +29,997,471 |
| VAXCYTE INC | 3,732,715 | 3,539,717 | -192,998 | 134,452,394 | 163,322,542 | +28,870,148 |
| TECHNIPFMC PLC | 1,480,110 | 1,952,427 | +472,317 | 58,390,340 | 87,000,147 | +28,609,807 |
| TESLA INC | 404,220 | 461,675 | +57,455 | 179,764,841 | 207,624,330 | +27,859,489 |
| RHYTHM PHARMACEUTICALS INC | 1,069,004 | 1,267,158 | +198,154 | 107,958,714 | 135,636,592 | +27,677,878 |
| IONQ INC | 367,667 | 1,114,665 | +746,998 | 22,611,521 | 50,015,019 | +27,403,498 |
| FABRINET | 163,002 | 190,170 | +27,168 | 59,433,852 | 86,580,676 | +27,146,824 |
| PALOMAR HLDGS INC | 738,528 | 840,226 | +101,698 | 86,223,144 | 113,228,856 | +27,005,712 |
| FAIR ISAAC CORP | 32,468 | 44,593 | +12,125 | 48,589,085 | 75,389,529 | +26,800,444 |
| SILICON LABORATORIES INC | 342,310 | 547,403 | +205,093 | 44,887,110 | 71,545,572 | +26,658,462 |
| APPLIED DIGITAL CORP | 0 | 1,034,397 | +1,034,397 | 0 | 25,363,414 | +25,363,414 |
| GLOBE LIFE INC | 430,642 | 608,813 | +178,171 | 61,568,887 | 85,148,586 | +23,579,699 |
| HUNT J B TRANS SVCS INC | 296,843 | 318,165 | +21,322 | 39,827,478 | 61,832,227 | +22,004,749 |
| ARES MANAGEMENT CORPORATION | 1,027,589 | 1,151,200 | +123,611 | 164,301,259 | 186,068,483 | +21,767,224 |
| RIGETTI COMPUTING INC | 0 | 935,778 | +935,778 | 0 | 20,727,483 | +20,727,483 |
| MSCI INC | 175,347 | 207,792 | +32,445 | 99,493,468 | 119,216,459 | +19,722,991 |
| ROCKWELL AUTOMATION INC | 204,335 | 233,795 | +29,460 | 71,421,329 | 90,962,620 | +19,541,291 |
| FIRSTCASH HOLDINGS INC | 422,455 | 537,734 | +115,279 | 66,925,321 | 85,704,045 | +18,778,724 |
| CALIX INC | 684,096 | 1,145,292 | +461,196 | 41,982,972 | 60,620,306 | +18,637,334 |
| TOPBUILD CORP | 225,029 | 255,451 | +30,422 | 87,954,835 | 106,571,603 | +18,616,768 |
| ALKAMI TECHNOLOGY INC | 3,095,058 | 4,118,355 | +1,023,297 | 76,881,241 | 95,010,450 | +18,129,209 |
| WINTRUST FINL CORP | 456,964 | 559,762 | +102,798 | 60,520,312 | 78,265,923 | +17,745,611 |
| JABIL INC | 266,147 | 328,412 | +62,265 | 57,799,144 | 74,884,504 | +17,085,360 |
| C H ROBINSON WORLDWIDE INC | 550,825 | 556,472 | +5,647 | 72,929,230 | 89,458,439 | +16,529,209 |
| ROYAL CARIBBEAN GROUP | 336,512 | 448,653 | +112,141 | 108,888,579 | 125,138,375 | +16,249,796 |
| HEALTHEQUITY INC | 1,716,658 | 1,952,452 | +235,794 | 162,687,679 | 178,864,128 | +16,176,449 |
| ONTO INNOVATION INC | 474,530 | 483,082 | +8,552 | 61,318,767 | 76,259,325 | +14,940,558 |
| LINCOLN ELEC HLDGS INC | 282,963 | 337,725 | +54,762 | 66,731,164 | 80,932,419 | +14,201,255 |
| QUANTA SVCS INC | 245,506 | 273,528 | +28,022 | 101,742,529 | 115,445,198 | +13,702,669 |
| BRAZE INC | 2,177,953 | 2,187,275 | +9,322 | 61,940,983 | 75,001,660 | +13,060,677 |
| SNOWFLAKE INC | 574,955 | 649,105 | +74,150 | 129,681,197 | 142,387,741 | +12,706,544 |
| AFFIRM HLDGS INC | 701,607 | 851,834 | +150,227 | 51,273,440 | 63,402,005 | +12,128,565 |
| APPLIED INDL TECHNOLOGIES IN | 234,734 | 285,290 | +50,556 | 61,277,311 | 73,253,913 | +11,976,602 |
| VITA COCO CO INC | 1,062,761 | 1,073,610 | +10,849 | 45,135,460 | 56,912,066 | +11,776,606 |
| OPTION CARE HEALTH INC | 2,757,858 | 2,765,305 | +7,447 | 76,558,138 | 88,102,617 | +11,544,479 |
| ISHARES TR | 0 | 66,532 | +66,532 | 0 | 11,173,384 | +11,173,384 |
| BANK AMERICA CORP | 3,861,103 | 3,823,609 | -37,494 | 199,194,291 | 210,298,513 | +11,104,222 |
| MONGODB INC | 181,314 | 159,529 | -21,785 | 56,276,345 | 66,952,601 | +10,676,256 |
| ROKU INC | 1,102,488 | 1,112,478 | +9,990 | 110,392,123 | 120,692,738 | +10,300,615 |
| DESCARTES SYS GROUP INC | 1,001,331 | 1,193,869 | +192,538 | 94,355,420 | 104,654,557 | +10,299,137 |
| XPO INC | 694,714 | 724,214 | +29,500 | 89,805,679 | 98,427,925 | +8,622,246 |
| CUMMINS INC | 0 | 15,274 | +15,274 | 0 | 7,796,613 | +7,796,613 |
| DIAMONDBACK ENERGY INC | 319,664 | 354,655 | +34,991 | 45,743,974 | 53,315,341 | +7,571,367 |
| TOAST INC | 1,034,305 | 1,268,337 | +234,032 | 37,762,476 | 45,038,647 | +7,276,171 |
| PALO ALTO NETWORKS INC | 370,359 | 448,460 | +78,101 | 75,412,406 | 82,606,353 | +7,193,947 |
| HOULIHAN LOKEY INC | 406,306 | 520,002 | +113,696 | 83,422,748 | 90,579,148 | +7,156,400 |
| JOHNSON & JOHNSON | 0 | 33,288 | +33,288 | 0 | 6,888,952 | +6,888,952 |
| CASELLA WASTE SYS INC | 1,647,907 | 1,665,226 | +17,319 | 156,353,416 | 163,092,234 | +6,738,818 |
| IDEX CORP | 398,283 | 401,998 | +3,715 | 64,824,541 | 71,531,524 | +6,706,983 |
| XENON PHARMACEUTICALS INC | 1,206,066 | 1,226,771 | +20,705 | 48,423,550 | 54,983,876 | +6,560,326 |
| SAIA INC | 227,908 | 228,751 | +843 | 68,226,539 | 74,691,777 | +6,465,238 |
| BIO RAD LABS INC | 155,524 | 165,107 | +9,583 | 43,607,374 | 50,025,770 | +6,418,396 |
| BANCO BILBAO VIZCAYA ARGENTA | 0 | 266,816 | +266,816 | 0 | 6,219,481 | +6,219,481 |
| ISHARES TR | 0 | 13,058 | +13,058 | 0 | 6,180,501 | +6,180,501 |