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Disclosery

MKSI MKS INC.

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Stock (common), issuer CIK 1049502

602 managers (621 13F filers) reported a position in MKSI shares at 2026-03-31, 68,998,605 shares in all. 151 filers opened a position and 54 filers sold out during the quarter.

Managers
602
13F filers
621
New
151
Added
204
Reduced
190
Sold out
54
Shares held by filers
68,998,605

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Louisiana State Employees Retirement Sy…19,500$4.48M0.08%+90013F-HRTimeline
Expect Equity LLC18,485$4.25M3.3%-5,53013F-HR/ATimeline
ARIZONA STATE RETIREMENT SYSTEM18,450$4.24M0.02%-35913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC18,177$4.18M0.02%+44013F-HRTimeline
ICON ADVISERS INC/CO18,000$4.14M0.96%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC17,789$4.09M<0.01%+6,64413F-HRTimelineGroup
BlueCrest Capital Management Ltd17,623$4.05M0.38%+1,98313F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …17,344$3.99M0.01%-14813F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…16,829$3.87M0.02%+2113F-HRTimeline
Vestmark Advisory Solutions, Inc.16,548$3.8M0.04%+2,08813F-HRTimeline
Anson Funds Management LPin group Anson Funds Management LP16,500$3.79M0.48%new13F-HR/ATimelineGroup
MERCER GLOBAL ADVISORS INC /ADV16,292$3.74M0.01%+5,32413F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM16,140$3.71M0.02%+30013F-HRTimeline
Informed Momentum Co LLC15,814$3.63M0.42%-11,05213F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding15,273$3.51M-373Timeline
Summit Trail Advisors, LLC15,248$3.5M0.05%+1,07613F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al15,100$3.47M0.03%013F-HRTimeline
KLP KAPITALFORVALTNING AS14,800$3.4M0.01%-20013F-HRTimeline
CWM, LLCin group CWM, LLC14,590$3.35M0.01%+6,89713F-HRTimelineGroup
Ethic Inc.14,495$3.33M0.05%-1,87113F-HRTimeline
New Age Alpha Advisors, LLC14,302$3.29M0.15%-33713F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD14,100$3.24M0.1%+90013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND13,766$3.16M0.04%+36913F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC13,306$3.06M0.01%+7,42813F-HRTimelineGroup
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…12,961$2.98M0.02%-18,63013F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.12,683$2.92M0.04%-11,70013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
GREAT LAKES ADVISORS, LLC12,498$2.87M0.02%-4013F-HRTimeline
HighTower Advisors, LLC12,396$2.85M<0.01%+6,28513F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…12,374$2.84M0.09%+6413F-HRTimelineGroup
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…12,289$2.82M0.11%new13F-HRTimelineGroup
Inspire Investing, LLCin group Inspire Investing, LLC12,111$2.78M0.16%+1,16513F-HRTimelineGroup
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding12,078$2.78M-1,824Timeline
Vestcor Inc11,479$2.64M0.07%new13F-HRTimeline
Man Group plcin group Man Group plc11,332$2.6M0.01%+8,32113F-HRTimelineGroup
WCM INVESTMENT MANAGEMENT, LLC12,120$2.55M0.01%-6,43613F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…10,903$2.51M<0.01%+65613F-HRTimelineGroup
Orion Porfolio Solutions, LLC10,800$2.48M0.02%-5,55813F-HRTimeline
Pacer Advisors, Inc.10,479$2.41M0.01%-21213F-HR/ATimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…10,928$2.31M0.01%-48413F-HRTimeline
FORA Capital, LLC10,039$2.31M0.17%new13F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP10,000$2.3M0.08%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd9,732$2.24M0.04%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS9,729$2.24M0.01%+7,50813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…9,444$2.17M<0.01%-56013F-HRTimelineGroup
Cornerstone Investment Partners, LLC9,413$2.16M0.09%+37613F-HRTimeline
Headlands Technologies LLC9,325$2.14M0.24%+6,64913F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP9,270$2.13M0.02%new13F-HRTimelineGroup
XPONANCE LLC9,061$2.08M0.01%+2,21913F-HRTimeline
Caption Management, LLC9,000$2.07M0.1%-7,32813F-HRTimeline
Old West Investment Management, LLC8,790$2.02M0.22%-7,56013F-HRTimeline
South Dakota Investment Council8,781$2.02M0.04%013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC8,775$2.02M0.02%-1,03713F-HRTimelineGroup
Timothy G. Youngquist 2020 Irrevocable …8,752$2.01M0.98%new13F-HRTimeline
ProShare Advisors LLC8,736$2.01M<0.01%-2,49313F-HRTimeline
Janney Montgomery Scott LLC8,650$1.99M<0.01%-7,82313F-HRTimeline
Brooklyn Investment Group8,600$1.98M0.06%+1,20113F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 3 filers holding8,551$1.97M+1,274Timeline
PRELUDE CAPITAL MANAGEMENT, LLC8,356$1.92M0.15%+1,53113F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…8,304$1.91M0.02%+2,56613F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…8,284$1.9M0.02%+1,00913F-HRTimelineGroup
Linden Thomas Advisory Services, LLC8,276$1.9M0.18%+5513F-HRTimeline
Havemeyer Place LP8,220$1.89M0.22%new13F-HRTimeline
Front Row Advisors LLC8,105$1.86M0.63%+19513F-HRTimeline
DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.in group DYMON ASIA CAPITAL (SINGAPORE…8,100$1.86M0.41%new13F-HRTimelineGroup
CAXTON ASSOCIATES LLP8,017$1.84M0.04%+20613F-HRTimeline
Aquatic Capital Management LLC8,014$1.84M0.05%-6,35513F-HRTimeline
Sanctuary Advisors, LLC7,342$1.69M0.01%-1,73113F-HRTimeline
J.W. COLE ADVISORS, INC.7,338$1.69M0.06%new13F-HRTimeline
MAVERICK CAPITAL LTD7,286$1.67M0.02%new13F-HRTimeline
AXQ CAPITAL, LP7,251$1.67M0.21%new13F-HRTimeline
EQUITABLE TRUST CO7,224$1.66M0.08%-4,52813F-HRTimeline
&PARTNERS7,113$1.63M0.01%-4,74713F-HRTimeline
Sterling Capital Management LLC7,058$1.62M0.03%-9,92913F-HRTimeline
HANCOCK WHITNEY CORP5,599$1.59M0.03%+21313F-HRTimeline
Hanson & Doremus Investment Management6,853$1.57M0.18%+84813F-HRTimeline
State of Alaska, Department of Revenue6,711$1.54M0.02%+4513F-HRTimeline
JOURNEY STRATEGIC WEALTH LLC6,641$1.53M0.04%+18913F-HRTimeline
Horizon Investments, LLC6,629$1.52M0.02%-50713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\6,387$1.47M<0.01%+513F-HRTimelineGroup
BCM ADVISORS, LLC4,903$1.43M0.28%013F-HRTimeline
ATLAS CAPITAL ADVISORS INC.6,009$1.38M0.16%+3813F-HRTimeline
Dorsey Wright & Associates5,784$1.33M0.16%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS5,645$1.3M<0.01%+2,21313F-HRTimeline
Legato Capital Management LLC5,605$1.29M0.12%new13F-HRTimeline
NewEdge Advisors, LLC5,580$1.28M<0.01%+2,92113F-HR/ATimeline
Concentric Capital Strategies, LP5,571$1.28M0.11%-97,01913F-HRTimeline
Quantbot Technologies LP5,556$1.28M0.05%new13F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…5,510$1.27M0.01%+56213F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.5,432$1.25M<0.01%+23613F-HRTimelineGroup
TWINBEECH CAPITAL LP5,405$1.24M0.13%new13F-HRTimeline
Eurizon Capital SGR S.p.A.5,308$1.2M<0.01%+4,25913F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC5,171$1.19M0.01%+2,75413F-HRTimeline
Meeder Advisory Services, Inc.in group Meeder Advisory Services, Inc.5,101$1.17M0.05%+37713F-HRTimelineGroup
Archer Investment Corp5,066$1.16M0.25%+1,09613F-HRTimeline
SECURIAN ASSET MANAGEMENT, INC4,989$1.15M0.05%+10013F-HRTimeline
SIERRA SUMMIT ADVISORS LLC4,879$1.12M0.16%new13F-HRTimeline
Pinpoint Asset Management (Singapore) P…4,826$1.11M0.26%new13F-HRTimeline
Ellevest, Inc.4,794$1.1M0.15%-38813F-HRTimeline
COMMERCE BANKin group COMMERCE BANK4,762$1.09M0.01%-2613F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC4,749$1.09M<0.01%-1,78613F-HRTimeline
QUADRANT CAPITAL GROUP LLC4,602$1.06M0.03%+26713F-HR/ATimeline
PROFUND ADVISORS LLC4,492$1.03M0.04%-52413F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC4,422$1.02M0.01%-1,14413F-HRTimeline
Quinn Opportunity Partners LLC4,410$1.01M0.05%013F-HRTimeline
Wedmont Private Capital3,859$988K0.03%+79513F-HRTimeline
Blue Trust, Inc.4,274$982K0.01%+4713F-HRTimeline
Merit Financial Group, LLC4,264$980K0.01%+85313F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.4,153$954K0.08%-14,06813F-HRTimeline
Chicago Partners Investment Group LLC3,384$942K0.02%+1,23013F-HRTimeline
Ensign Peak Advisors, Inc4,047$930K<0.01%+30013F-HR/ATimeline
Callan Family Office, LLC4,007$921K0.02%-58613F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS3,964$911K<0.01%new13F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC3,929$903K<0.01%-2,07813F-HRTimelineGroup
Aaron Wealth Advisors LLC3,928$903K0.05%-1,44413F-HRTimeline
Crossmark Global Holdings, Inc.3,842$883K0.01%+50213F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.3,836$881K0.01%-66513F-HRTimeline
HUDSON EDGE INVESTMENT PARTNERS INC.3,813$876K0.13%-2,49713F-HRTimeline
TT International Asset Management LTD3,763$865K0.09%new13F-HRTimeline
Federation des caisses Desjardins du Qu…3,749$862K<0.01%-1,13313F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.4,048$852K0.15%new13F-HRTimeline
Vise Technologies, Inc.5,307$848K0.02%013F-HRTimeline
Verition Fund Management LLC3,670$843K0.01%+8013F-HRTimeline
State of Wyoming3,660$841K0.1%-80513F-HRTimeline
Utah Retirement Systems3,600$827K0.01%013F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC3,528$811K0.02%+9313F-HRTimeline
Aigen Investment Management, LP3,479$800K0.21%new13F-HRTimeline
Monolith Management Ltd3,470$797K0.31%new13F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC3,455$794K<0.01%+2713F-HRTimelineGroup
EP Wealth Advisors, LLC3,452$793K<0.01%-93213F-HRTimeline
Empowered Funds, LLC3,402$782K<0.01%-29713F-HR/ATimeline
WEST MICHIGAN ADVISORS, LLC3,376$776K0.17%new13F-HRTimeline
Maryland State Retirement & Pension Sys…3,348$769K0.02%013F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC3,328$765K0.01%+1,13813F-HRTimelineGroup
SYON CAPITAL LLC3,324$764K0.04%-50713F-HRTimeline
EntryPoint Capital, LLC3,289$756K0.22%+1,84013F-HRTimeline
Baker Avenue Asset Management, LP3,277$753K0.02%+95413F-HRTimeline
MACKENZIE FINANCIAL CORP3,274$752K<0.01%-90113F-HRTimeline
Fulton Bank, N.A.3,228$742K0.03%-69013F-HRTimeline
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…3,165$727K<0.01%new13F-HRTimelineGroup
Private Advisor Group, LLC3,144$723K<0.01%-99713F-HRTimeline
WASHINGTON CAPITAL MANAGEMENT, INC3,140$722K0.61%-2,36013F-HRTimeline
Atria Investments, Inc3,123$718K0.01%-1,77713F-HRTimeline
Fairvoy Private Wealth, LLC3,070$706K0.17%new13F-HRTimeline
GAMMA Investing LLC3,057$703K0.03%+19513F-HRTimeline
Fieldview Capital Management, LLC3,049$701K0.2%-22,15913F-HRTimeline
Quantitative Investment Management, LLC3,015$692K0.07%new13F-HRTimeline
AE Wealth Management LLC2,931$674K<0.01%+32913F-HRTimeline
Cetera Trust Company, N.A2,915$670K0.38%013F-HRTimeline
Ares Systematic Credit Ltd3,115$656K0.52%new13F-HRTimeline
OP Asset Management Ltd2,828$650K0.01%new13F-HR/ATimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.2,770$637K0.01%new13F-HRTimelineGroup
Venturi Wealth Management, LLC2,736$629K0.03%-1,57813F-HRTimeline
TECTONIC ADVISORS LLCin group TECTONIC ADVISORS LLC2,632$605K0.03%-48013F-HRTimelineGroup
Shay Capital LLC2,625$603K0.09%new13F-HRTimeline
FIDEURAM - INTESA SANPAOLO PRIVATE BANK…2,624$603K0.02%new13F-HRTimeline
BRIGHTON JONES LLC2,573$591K0.01%new13F-HR/ATimeline
LEUTHOLD GROUP, LLC2,542$584K0.06%-7613F-HRTimeline
GREENLEAF TRUST2,495$573K0.01%-13913F-HRTimeline
Caitong International Asset Management …2,482$570K0.11%new13F-HRTimeline
Kera Capital Partners, Inc.2,433$559K0.07%+14113F-HRTimeline
Counterpoint Mutual Funds LLC2,430$558K0.08%+48713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,401$552K0.01%-2,48613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC2,398$551K<0.01%-6,99213F-HRTimelineGroup
MML INVESTORS SERVICES, LLC2,382$547K<0.01%-99213F-HRTimeline
SIGNATUREFD, LLC2,316$532K0.01%+5413F-HRTimeline
Polymer Capital Management (US) LLC2,292$527K0.08%-13313F-HRTimeline
Claret Asset Management Corp2,282$524K0.06%013F-HRTimeline
IMC-Chicago, LLC2,257$519K0.01%new13F-HRTimeline
GATEWAY INVESTMENT ADVISERS LLC2,246$516K0.01%new13F-HRTimeline
Jackson Creek Investment Advisors LLC2,221$510K0.15%new13F-HRTimeline
Avior Wealth Management, LLC2,200$506K0.01%-49513F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.2,189$503K<0.01%-1413F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC2,175$500K<0.01%+72513F-HRTimeline
SHELTON CAPITAL MANAGEMENT2,175$500K0.01%-6513F-HRTimeline
Empirical Financial Services, LLC d.b.a…2,165$498K0.01%new13F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …2,141$492K0.01%-81713F-HRTimelineGroup
CIBC Asset Management Inc2,107$484K<0.01%013F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC2,100$483K0.03%013F-HRTimeline
ROMANO BROTHERS AND COMPANY2,057$473K0.05%013F-HRTimeline
Integrated Wealth Concepts LLC2,054$472K<0.01%new13F-HRTimeline
HB Wealth Management, LLC2,034$467K<0.01%new13F-HRTimeline
DRW Securities, LLC2,011$462K0.03%new13F-HRTimeline
MAI Capital Management1,987$457K<0.01%+88413F-HRTimeline
North Dakota State Investment Board1,964$451K0.02%-39413F-HRTimeline
Centiva Capital, LP1,939$446K0.02%new13F-HRTimeline
Versant Capital Management, Inc1,885$433K0.04%+36313F-HRTimeline
Phillips Wealth Planners LLC1,342$429K0.32%-24213F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC1,865$428K0.02%-5,43013F-HRTimelineGroup
Larson Financial Group LLC1,852$426K0.01%+1,20413F-HRTimeline
Watershed Asset Management, L.L.C.1,827$420K0.44%-1,07513F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …1,817$418K0.02%-30713F-HRTimelineGroup
INFRASTRUCTURE CAPITAL ADVISORS, LLC1,750$402K0.04%-1,82213F-HRTimeline
DIVERSIFIED TRUST CO1,675$385K0.01%new13F-HRTimeline
Inscription Capital, LLC1,666$383K0.04%+2813F-HRTimeline
Cambridge Investment Research Advisors,…1,601$368K<0.01%+1013F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd1,600$368K0.01%new13F-HRTimelineGroup
Laird Norton Wetherby Trust Company, LLCin group Laird Norton Wetherby Trust C…1,586$364K0.01%+4213F-HRTimelineGroup
Ballentine Partners, LLC1,579$363K0.01%+213F-HRTimeline
Caprock Group, LLC1,568$360K0.01%+19013F-HRTimeline
Meiji Yasuda Asset Management Co Ltd.in group Meiji Yasuda Life Insurance Co1,550$356K0.02%+913F-HRTimelineGroup