| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | 12% | $959,477,046 | 7,752,097 | The Vanguard Group | 30 Sep 2025 | |||
| BlackRock, Inc. | 8.8% | $728,716,050 | 5,887,663 | BlackRock, Inc. | 30 Sep 2025 | |||
| Invesco Ltd. | 6.5% | $806,336,618 | 4,394,205 | Invesco Ltd. | 31 Dec 2025 | |||
| VICTORY CAPITAL MANAGEMENT INC | 5.6% | $381,446,885 | 3,787,201 | Victory Capital Management, Inc. | 30 Jun 2025 | |||
| Capital International Investors | 4.7% | $225,778,190 | 3,160,389 | Capital International Investors | 30 Sep 2024 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 4.1% | -35% | $505,335,328 | -$252,359,660 | 2,753,871 | -33% | T. Rowe Price Associates, Inc. | 31 Dec 2025 |
As of 31 Dec 2025, 507 institutional investors reported holding 70,528,464 shares of MKS INC - COMMON STOCK (MKSI). This represents 105% of the company’s total 67,167,585 outstanding shares.
The largest institutional shareholders of MKS INC - COMMON STOCK (MKSI) together control 73% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 11% | 7,487,305 | -3.4% | 0.02% | $1,196,471,339 |
| BlackRock, Inc. | 9.1% | 6,138,839 | +0.25% | 0.02% | $980,986,438 |
| Invesco Ltd. | 5.7% | 3,855,511 | +62% | 0.09% | $616,110,658 |
| Capital International Investors | 4.8% | 3,239,230 | -0.47% | 0.08% | $517,628,954 |
| FMR LLC | 4.8% | 3,198,335 | -7.1% | 0.03% | $511,094,010 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 4.1% | 2,753,850 | -24% | 0.05% | $440,067,000 |
| VICTORY CAPITAL MANAGEMENT INC | 3.8% | 2,562,399 | -28% | 0.23% | $409,471,360 |
| WELLINGTON MANAGEMENT GROUP LLP | 3.8% | 2,552,021 | -15% | 0.07% | $407,812,955 |
| STATE STREET CORP | 3% | 2,017,590 | -1.3% | 0.01% | $322,410,882 |
| JPMORGAN CHASE & CO | 2.3% | 1,551,443 | +133% | 0.02% | $247,920,742 |
| NEUBERGER BERMAN GROUP LLC | 2.2% | 1,461,189 | -11% | 0.17% | $233,497,989 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 1,254,049 | +0.44% | 0.01% | $200,437,891 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 1,117,487 | -12% | 0.04% | $178,581,199 |
| FRANKLIN RESOURCES INC | 1.6% | 1,041,725 | -26% | 0.04% | $166,467,655 |
| COOKE & BIELER LP | 1.4% | 966,703 | -27% | 1.6% | $154,479,139 |
| NORGES BANK | 1.4% | 922,737 | 0.02% | $147,453,373 | |
| Madison Asset Management, LLC | 1.4% | 921,450 | -5.6% | 1.7% | $147,247,760 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3% | 870,654 | +2.9% | 0.02% | $139,130,509 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1.3% | 839,773 | +160% | 0.56% | $134,195,725 |
| MILLENNIUM MANAGEMENT LLC | 1.2% | 817,251 | +83% | 0.09% | $130,596,710 |
| Bank of New York Mellon Corp | 1.2% | 788,648 | +21% | 0.02% | $126,026,114 |
| PRINCIPAL FINANCIAL GROUP INC | 1.1% | 765,595 | -6.5% | 0.06% | $122,352,810 |
| Point72 Asset Management, L.P. | 0.93% | 625,799 | -38% | 0.16% | $100,002,680 |
| ROYCE & ASSOCIATES LP | 0.92% | 616,605 | -25% | 1% | $98,533,479 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 0.9% | 606,214 | -26% | 0.08% | $96,881,320 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 70,528,464 | $11,276,143,680 | -$278,143,213 | $159.80 | 507 |
| 2025 Q3 | 72,009,390 | $8,912,346,556 | -$247,110,462 | $123.77 | 432 |
| 2025 Q2 | 74,656,256 | $7,417,760,692 | +$501,510,755 | $99.36 | 391 |
| 2025 Q1 | 70,604,374 | $5,654,976,915 | +$15,984,881 | $80.15 | 390 |
| 2024 Q4 | 70,469,090 | $7,360,920,393 | +$163,297,205 | $104.39 | 416 |
| 2024 Q3 | 67,801,071 | $7,370,645,916 | -$175,427,802 | $108.71 | 405 |
| 2024 Q2 | 69,059,487 | $9,023,696,771 | +$20,371,519 | $130.58 | 393 |
| 2024 Q1 | 68,945,423 | $9,157,146,718 | +$298,920,133 | $133.00 | 336 |
| 2023 Q4 | 66,915,706 | $6,883,792,520 | +$74,542,820 | $102.87 | 322 |
| 2023 Q3 | 67,016,612 | $5,797,022,331 | -$98,537,748 | $86.54 | 320 |
| 2023 Q2 | 67,793,825 | $7,320,534,717 | +$83,578,503 | $108.10 | 318 |
| 2023 Q1 | 67,091,933 | $5,943,332,893 | -$31,005,207 | $88.62 | 320 |
| 2022 Q4 | 67,488,362 | $5,740,811,738 | +$777,783,941 | $84.73 | 310 |
| 2022 Q3 | 58,488,300 | $4,841,875,867 | +$414,649,121 | $82.64 | 340 |
| 2022 Q2 | 53,123,303 | $5,449,916,038 | -$71,616,252 | $102.63 | 361 |
| 2022 Q1 | 53,950,167 | $8,057,424,746 | +$9,162,472 | $150.00 | 383 |
| 2021 Q4 | 53,647,275 | $9,337,726,302 | +$135,642,019 | $174.17 | 399 |
| 2021 Q3 | 52,553,176 | $7,929,920,269 | +$42,671,310 | $150.91 | 365 |
| 2021 Q2 | 52,084,245 | $9,266,889,055 | -$156,963,648 | $177.95 | 366 |
| 2021 Q1 | 53,005,490 | $9,827,292,725 | +$175,330,067 | $185.42 | 345 |
| 2020 Q4 | 52,082,426 | $7,837,018,243 | +$71,934,035 | $150.45 | 339 |
| 2020 Q3 | 51,806,716 | $5,662,007,337 | -$106,289,181 | $109.23 | 327 |
| 2020 Q2 | 52,725,910 | $5,972,142,259 | -$137,548,110 | $113.24 | 309 |
| 2020 Q1 | 54,018,372 | $4,400,202,816 | +$82,076,417 | $81.45 | 296 |
| 2019 Q4 | 52,685,982 | $5,795,928,320 | -$179,043,053 | $110.01 | 342 |
| 2019 Q3 | 54,109,549 | $4,993,385,895 | +$170,440,918 | $92.28 | 292 |
| 2019 Q2 | 52,504,189 | $4,090,510,705 | +$80,253,517 | $77.89 | 301 |
| 2019 Q1 | 52,307,959 | $4,865,302,244 | +$241,488,461 | $93.05 | 324 |
| 2018 Q4 | 50,153,477 | $3,239,577,698 | -$19,868,131 | $64.61 | 338 |
| 2018 Q3 | 50,277,371 | $4,028,173,297 | -$77,098,738 | $80.15 | 377 |
| 2018 Q2 | 50,930,841 | $4,872,663,487 | -$116,765,898 | $95.70 | 382 |
| 2018 Q1 | 51,830,820 | $5,991,456,911 | +$140,227,515 | $115.65 | 388 |
| 2017 Q4 | 51,372,716 | $4,854,068,641 | -$126,172,442 | $94.50 | 354 |
| 2017 Q3 | 52,247,222 | $4,935,175,550 | +$15,899,965 | $94.45 | 336 |
| 2017 Q2 | 52,101,232 | $3,510,067,554 | -$71,640,225 | $67.30 | 312 |
| 2017 Q1 | 53,712,589 | $3,694,099,495 | +$311,720,466 | $68.75 | 284 |
| 2016 Q4 | 55,488,684 | $3,296,305,677 | +$262,781 | $59.40 | 267 |
| 2016 Q3 | 55,562,664 | $2,761,653,392 | +$20,272,404 | $49.73 | 242 |
| 2016 Q2 | 55,285,484 | $2,382,069,687 | +$89,671,190 | $43.06 | 206 |
| 2016 Q1 | 52,713,601 | $1,985,077,961 | +$23,827,495 | $37.65 | 203 |
| 2015 Q4 | 52,832,827 | $1,902,401,980 | +$4,055,175 | $36.00 | 183 |
| 2015 Q3 | 53,328,510 | $1,788,081,539 | +$9,288,697 | $33.53 | 200 |
| 2015 Q2 | 52,902,839 | $2,006,995,250 | +$23,222,207 | $37.94 | 197 |
| 2015 Q1 | 52,323,808 | $1,769,179,621 | -$3,877,059 | $33.81 | 193 |
| 2014 Q4 | 52,448,772 | $1,919,418,691 | -$41,616,717 | $36.60 | 181 |
| 2014 Q3 | 53,596,339 | $1,789,044,115 | -$23,521,665 | $33.38 | 162 |
| 2014 Q2 | 54,369,786 | $1,698,780,873 | +$21,678,002 | $31.24 | 156 |
| 2014 Q1 | 53,680,587 | $1,603,720,460 | +$38,279,294 | $29.89 | 149 |