MKS INC - Common Stock (MKSI) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
MKSI on Nasdaq
Shares outstanding
67,175,884
Price per share
$159.80
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
72,006,934
Total reported value
$8,912,042,877
% of total 13F portfolios
0.01%
Share change
-2,563,410
Value change
-$250,473,623
Number of holders
427
Price from insider filings
$159.80
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MKS INC - Common Stock (MKSI) based on Schedule 13D/G filings

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
PRICE T ROWE ASSOCIATES INC /MD/ 6.2% +24% $415,885,772 +$79,337,144 4,129,128 +24% T. Rowe Price Associates, Inc. 30 Jun 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

As of 30 Sep 2025, 427 institutional investors reported holding 72,006,934 shares of MKS INC - Common Stock (MKSI). This represents 107% of the company’s total 67,175,884 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of MKS INC - Common Stock (MKSI) together control 78% 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 12% 7,752,097 +4% 0.01% $959,477,046
BlackRock, Inc. 9.1% 6,123,329 -16% 0.01% $757,884,395
PRICE T ROWE ASSOCIATES INC /MD/ 5.4% 3,633,019 -12% 0.05% $449,659,000
VICTORY CAPITAL MANAGEMENT INC 5.3% 3,582,216 -7.3% 0.28% $443,370,874
FMR LLC 5.1% 3,443,264 -10% 0.02% $426,172,769
Capital International Investors 4.8% 3,254,663 +0.06% 0.07% $402,829,640
WELLINGTON MANAGEMENT GROUP LLP 4.5% 3,013,795 +0.48% 0.07% $373,017,407
Invesco Ltd. 3.5% 2,383,366 +23% 0.05% $294,989,209
STATE STREET CORP 3% 2,043,957 -0.67% 0.01% $252,980,558
NEUBERGER BERMAN GROUP LLC 2.4% 1,634,796 -13% 0.15% $202,338,733
NORDEA INVESTMENT MANAGEMENT AB 2.4% 1,596,444 -5.8% 0.17% $195,851,750
FRANKLIN RESOURCES INC 2.1% 1,408,953 +406% 0.04% $174,386,112
COOKE & BIELER LP 2% 1,321,877 +7.7% 1.7% $163,608,716
DIMENSIONAL FUND ADVISORS LP 1.9% 1,265,365 +31% 0.03% $156,601,919
GEODE CAPITAL MANAGEMENT, LLC 1.9% 1,248,498 -0.76% 0.01% $154,554,327
FRONTIER CAPITAL MANAGEMENT CO LLC 1.6% 1,080,763 +18% 1.2% $133,765,996
Point72 Asset Management, L.P. 1.5% 1,013,553 0.27% $125,447,474
Madison Asset Management, LLC 1.5% 976,091 -33% 1.3% $120,810,801
Balyasny Asset Management L.P. 1.3% 850,245 +16% 0.21% $105,234,824
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.3% 846,305 +7% 0.02% $104,747,170
ROYCE & ASSOCIATES LP 1.2% 827,127 -9.6% 1% $102,373,509
MANUFACTURERS LIFE INSURANCE COMPANY, THE 1.2% 823,196 +58% 0.08% $101,884,193
PRINCIPAL FINANCIAL GROUP INC 1.2% 818,746 -4% 0.05% $101,337,270
Channing Capital Management, LLC 1.1% 744,162 -25% 2.4% $92,104,931
ROYAL BANK OF CANADA 1% 679,796 -12% 0.01% $84,139,000

Institutional Holders of MKS INC - Common Stock (MKSI) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 1,062,283 $170,847,148 -$138,976,383 $159.80 22
2025 Q3 72,006,934 $8,912,042,877 -$250,473,623 $123.77 427
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