MKS INC - Common Stock (MKSI)

Historical Holders from Q1 2014 to Q4 2025

Symbol: MKSI on Nasdaq
Type / Class: Equity / Common Stock
Shares outstanding: 67,175,884
All holders as of 30 Sep 2025: Q3 2025
Total 13F shares, excl. options: 72,008,298
Holdings value: $8,911,780,870
% of all portfolios: 0.01%
Number of holders: 426
Number of buys: 222
Number of sells: 176
Average buys %: +0%
Average sells %: -0%

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%	$438,595,976	+$83,669,494	4,129,128	+24%	T. Rowe Price Associates, Inc.	30 Jun 2025
VICTORY CAPITAL MANAGEMENT INC	5.6%		$303,165,440		3,787,201		Victory Capital Management, Inc.	30 Jun 2025
Capital International Investors	4.7%		$231,340,475		3,160,389		Capital International Investors	30 Sep 2024

As of 30 Sep 2025 MKS INC - Common Stock (MKSI) has 426 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 72,008,298 shares of the company stock as of 30 Sep 2025.

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

Period	Reported Shares, Excl. Options	Value, Excl. Options	Value Change	Puts Notional Value	Calls Notional Value	Price	Investors
2025 Q4	5,557	$888,009	+$136,585			$159.80	2
2025 Q3	72,008,298	$8,911,780,870	-$250,359,234	$43,379,352	$248,168,996	$123.77	426
2025 Q2	74,656,256	$7,417,760,692	+$501,510,811	$14,454,961	$195,284,131	$99.36	391
2025 Q1	70,597,630	$5,654,436,019	+$15,984,603	$15,352,081	$154,210,398	$80.15	389
2024 Q4	70,454,635	$7,359,419,244	+$242,024,472	$15,976,132	$195,806,833	$104.39	413
2024 Q3	67,034,936	$7,287,359,659	-$273,709,363	$20,304,860	$207,544,769	$108.71	405
2024 Q2	69,053,870	$9,022,963,114	+$161,905,848	$22,747,036	$172,574,528	$130.58	394
2024 Q1	67,855,916	$9,015,994,229	+$156,627,699	$19,045,600	$52,229,100	$133.00	341
2023 Q4	1,057,047	$108,738,426	-$64,286,035			$102.87	3
2023 Q3	65,504,179	$5,666,136,330	-$45,208,707	$10,272,298	$12,037,714	$86.54	317
2023 Q2	65,201,233	$7,040,275,871	-$85,038,580	$11,750,470	$18,020,270	$108.10	314
2023 Q1	65,935,321	$5,840,834,720	-$40,403,683	$7,763,112	$12,504,282	$88.62	316
2022 Q4	66,672,048	$5,671,645,193	+$759,166,799	$9,302,657	$8,770,630	$84.73	308
2022 Q3	56,183,379	$4,651,377,516	+$437,190,711	$12,365,000	$10,436,000	$82.64	332
2022 Q2	52,566,927	$5,389,075,641	-$88,295,383	$4,645,720	$11,486,980	$102.63	352
2022 Q1	53,934,087	$8,054,508,449	-$9,622,971	$29,447,000	$10,421,000	$150.00	375
2021 Q4	52,215,300	$9,089,914,462	+$58,049,068	$21,148,000	$13,135,000	$174.17	393
2021 Q3	51,255,290	$7,734,923,316	+$42,700,419	$14,620,467	$17,819,738	$150.91	360
2021 Q2	50,855,851	$9,046,282,507	-$143,805,010	$19,379,000	$22,658,000	$177.95	365
2021 Q1	52,892,745	$9,806,166,471	+$167,818,770	$24,315,000	$27,556,000	$185.42	342
2020 Q4	52,081,322	$7,836,150,460	+$71,893,450	$38,207,000	$39,100,000	$150.45	336
2020 Q3	51,805,609	$5,660,762,074	-$107,112,728	$9,149,000	$5,418,000	$109.23	324
2020 Q2	52,724,803	$5,972,016,488	-$138,108,719	$13,498,000	$7,474,000	$113.24	306
2020 Q1	53,995,279	$4,398,329,465	+$82,464,625	$7,290,000	$9,252,000	$81.45	290
2019 Q4	52,354,604	$5,759,476,109	-$172,186,587	$5,896,000	$11,033,000	$110.01	336
2019 Q3	54,093,719	$4,991,928,905	+$170,855,979	$6,752,000	$10,799,000	$92.28	286
2019 Q2	52,333,426	$4,077,214,608	+$133,164,537	$5,493,000	$7,361,000	$77.89	294
2019 Q1	52,306,511	$4,865,167,508	+$246,282,434	$12,023,000	$13,985,000	$93.05	323
2018 Q4	50,065,968	$3,233,923,742	-$17,849,316	$12,960,000	$12,403,000	$64.61	336
2018 Q3	49,490,771	$3,965,130,841	-$73,815,748	$17,802,000	$18,065,000	$80.15	371
2018 Q2	50,787,765	$4,858,961,639	-$50,814,987	$15,228,000	$17,282,000	$95.70	376
2018 Q1	51,587,523	$5,963,321,792	+$147,125,672	$10,396,000	$12,028,000	$115.65	386
2017 Q4	51,070,190	$4,825,483,065	-$118,416,675	$13,249,000	$9,440,000	$94.50	351
2017 Q3	52,243,901	$4,934,857,466	+$24,924,381	$7,055,001	$9,736,003	$94.45	333
2017 Q2	50,859,367	$3,426,490,729	-$73,821,947	$6,972,000	$2,921,000	$67.30	308
2017 Q1	52,741,371	$3,627,329,495	+$295,763,997	$1,587,000	$2,035,000	$68.75	281
2016 Q4	54,740,207	$3,251,825,698	+$3,493,784	$1,117,001	$1,870,000	$59.40	264
2016 Q3	55,562,664	$2,761,653,392	+$20,342,358	$856,000	$1,323,000	$49.73	242
2016 Q2	55,285,484	$2,382,069,687	+$89,671,229	$727,000	$1,335,000	$43.06	206
2016 Q1	52,713,601	$1,985,077,961	+$26,316,508	$168,000	$724,000	$37.65	203
2015 Q4	52,832,827	$1,902,401,980	+$3,379,228	$212,000	$447,000	$36.00	183
2015 Q3	53,328,510	$1,788,081,539	+$2,903,210	$815,000	$3,941,000	$33.53	200
2015 Q2	51,315,997	$1,946,790,250	+$21,720,682	$19,000	$7,949,000	$37.94	196
2015 Q1	52,319,415	$1,769,030,621	-$3,986,371	$58,000	$4,071,000	$33.81	194
2014 Q4	52,241,642	$1,911,837,691	-$42,756,317	$37,000		$36.60	181
2014 Q3	53,596,339	$1,789,044,115	-$23,521,722	$0	$0	$33.38	162
2014 Q2	54,369,786	$1,698,780,873	+$21,868,057	$47,000	$50,000	$31.24	156
2014 Q1	52,442,370	$1,566,710,460	+$37,453,726	$294,000	$3,000	$29.89	148