There is a long list of 333 institutional holders of MKSI within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of MKSI by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-MKSI table below, the initial column indicates the name of each top institutional holder of MKSI, with a link to that fund's top holdings. The next columns indicate the amount of MKSI stock held by each of the institutional holders of MKSI, followed by the MKSI position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Price T Rowe Associates Inc. MD	8,084,331	$831,636	12/31/2023
MKSI	8,084,331	$831,636	12/31/2023
Vanguard Group Inc.	6,892,941	$709,077	12/31/2023
MKSI	6,892,941	$709,077	12/31/2023
BlackRock Inc.	6,178,625	$635,595	12/31/2023
MKSI	6,178,625	$635,595	12/31/2023
Victory Capital Management Inc.	3,922,043	$521,632	03/31/2024
MKSI	3,922,043	$521,632	03/31/2024
FMR LLC	4,051,185	$416,745	12/31/2023
MKSI	4,051,185	$416,745	12/31/2023
Capital International Investors	3,669,257	$377,456	12/31/2023
MKSI	3,669,257	$377,456	12/31/2023
Nordea Investment Management AB	2,141,676	$282,102	03/31/2024
MKSI	2,141,676	$282,102	03/31/2024
Wellington Management Group LLP	2,577,290	$265,126	12/31/2023
MKSI	2,577,290	$265,126	12/31/2023
Invesco Ltd.	2,345,348	$241,266	12/31/2023
MKSI	2,345,348	$241,266	12/31/2023
State Street Corp	1,828,262	$188,073	12/31/2023
MKSI	1,828,262	$188,073	12/31/2023
Bank of New York Mellon Corp	1,117,504	$148,628	03/31/2024
MKSI	1,117,504	$148,628	03/31/2024
JPMorgan Chase & Co.	1,400,059	$144,024	12/31/2023
MKSI	1,400,059	$144,024	12/31/2023
Principal Financial Group Inc.	911,243	$121,195	03/31/2024
MKSI	911,243	$121,195	03/31/2024
Cooke & Bieler LP	1,157,767	$119,099	12/31/2023
MKSI	1,157,767	$119,099	12/31/2023
Norges Bank	1,143,890	$117,672	12/31/2023
MKSI	1,143,890	$117,672	12/31/2023
Royce & Associates LP	1,119,693	$115,183	12/31/2023
MKSI	1,119,693	$115,183	12/31/2023
Goldman Sachs Group Inc.	1,052,760	$108,297	12/31/2023
MKSI	1,052,760	$108,297	12/31/2023
Geode Capital Management LLC	1,037,671	$106,762	12/31/2023
MKSI	1,037,671	$106,762	12/31/2023
Neuberger Berman Group LLC	1,011,531	$104,056	12/31/2023
MKSI	1,011,531	$104,056	12/31/2023
Charles Schwab Investment Management Inc.	597,309	$61,445	12/31/2023
MKSI	597,309	$61,445	12/31/2023
Westfield Capital Management Co. LP	589,715	$60,664	12/31/2023
MKSI	589,715	$60,664	12/31/2023
Madison Asset Management LLC	578,639	$59,525	12/31/2023
MKSI	578,639	$59,525	12/31/2023
Frontier Capital Management Co. LLC	545,516	$56,117	12/31/2023
MKSI	545,516	$56,117	12/31/2023
Northern Trust Corp	483,904	$49,779	12/31/2023
MKSI	483,904	$49,779	12/31/2023
Polaris Capital Management LLC	366,700	$48,771	03/31/2024
MKSI	366,700	$48,771	03/31/2024
Fisher Asset Management LLC	455,981	$46,907	12/31/2023
MKSI	455,981	$46,907	12/31/2023
Rafferty Asset Management LLC	399,500	$41,097	12/31/2023
MKSI	399,500	$41,097	12/31/2023
Ceredex Value Advisors LLC	306,658	$40,786	03/31/2024
MKSI	306,658	$40,786	03/31/2024
Capital Research Global Investors	387,153	$39,826	12/31/2023
MKSI	387,153	$39,826	12/31/2023
Amundi	362,084	$37,353	12/31/2023
MKSI	362,084	$37,353	12/31/2023
Bank of America Corp DE	324,851	$33,417	12/31/2023
MKSI	324,851	$33,417	12/31/2023
Barclays PLC	318,269	$32,740	12/31/2023
MKSI	318,269	$32,740	12/31/2023
Thrivent Financial for Lutherans	301,474	$31,012	12/31/2023
MKSI	301,474	$31,012	12/31/2023
Value Holdings Management CO. LLC	297,714	$30,626	12/31/2023
MKSI	297,714	$30,626	12/31/2023
Royal Bank of Canada	284,598	$29,277	12/31/2023
MKSI	284,598	$29,277	12/31/2023
Morgan Stanley	266,699	$27,435	12/31/2023
MKSI	266,699	$27,435	12/31/2023
Dimensional Fund Advisors LP	246,807	$25,396	12/31/2023
MKSI	246,807	$25,396	12/31/2023
Summit Partners Public Asset Management LLC	239,889	$24,677	12/31/2023
MKSI	239,889	$24,677	12/31/2023
Silvercrest Asset Management Group LLC	235,581	$24,234	12/31/2023
MKSI	235,581	$24,234	12/31/2023
Deutsche Bank AG	229,587	$23,618	12/31/2023
MKSI	229,587	$23,618	12/31/2023
UBS Group AG	229,385	$23,597	12/31/2023
MKSI	229,385	$23,597	12/31/2023
Ameriprise Financial Inc.	227,730	$23,427	12/31/2023
MKSI	227,730	$23,427	12/31/2023
The Manufacturers Life Insurance Company	219,870	$22,618	12/31/2023
MKSI	219,870	$22,618	12/31/2023
Aperture Investors LLC	217,286	$22,352	12/31/2023
MKSI	217,286	$22,352	12/31/2023
American Century Companies Inc.	215,689	$22,188	12/31/2023
MKSI	215,689	$22,188	12/31/2023
BNP Paribas Arbitrage SA	166,550	$22,151	03/31/2024
MKSI	166,550	$22,151	03/31/2024
Raymond James & Associates	162,548	$21,619	03/31/2024
MKSI	162,548	$21,619	03/31/2024
Retirement Systems of Alabama	155,044	$20,621	03/31/2024
MKSI	155,044	$20,621	03/31/2024
Balyasny Asset Management LLC	195,186	$20,079	12/31/2023
MKSI	195,186	$20,079	12/31/2023
Rhumbline Advisers	190,227	$19,569	12/31/2023
MKSI	190,227	$19,569	12/31/2023