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MKS (MKSI) Institutional Ownership

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$317.62 -6.64 (-2.05%)
Closing price 04:00 PM Eastern
Extended Trading
$309.69 -7.93 (-2.50%)
As of 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for MKS (NASDAQ:MKSI)

Current
Institutional Ownership
Percentage
99.79%
Number of
Institutional Buyers
(last 12 months)
333
Total
Institutional Inflows
(last 12 months)
$1.84B
Number of
Institutional Sellers
(last 12 months)
180
Total
Institutional Outflows
(last 12 months)
$3.25B
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MKSI Institutional Buying and Selling by Quarter

MKS Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/22/2026 Segall Bryant & Hamill LLC39,434$9.06M0.1%N/A0.058%
5/19/2026 Front Row Advisors LLC8,105$1.86M0.6%+2.5%0.012%
5/19/2026 Western Wealth Management LLC400$92K0.0%N/A0.001%
5/19/2026 Edgestream Partners L.P.42,701$9.81M0.3%-27.5%0.063%
5/19/2026 Anson Funds Management LP16,500$3.79M0.3%N/A0.024%
5/19/2026 Janus Henderson Group PLC30,370$6.98M0.0%+4.5%0.045%
5/19/2026 Bull Harbor Capital LLC1,051$242K0.1%N/A0.002%
5/19/2026 Arkadios Wealth Advisors1,311$301K0.0%N/A0.002%
5/18/2026 EverSource Wealth Advisors LLC1,120$257K0.0%+48.3%0.002%
5/18/2026 California State Teachers Retirement System77,734$17.86M0.0%+21.7%0.115%
5/18/2026 Royal Bank of Canada153,003$35.16M0.0%-88.4%0.227%
5/18/2026 Empowered Funds LLC3,402$782K0.0%-8.0%0.005%
5/16/2026 Infrastructure Capital Advisors LLC1,750$402K0.0%-51.0%0.003%
5/16/2026 Maverick Capital Ltd.7,286$1.67M0.0%N/A0.011%
5/16/2026 Quantinno Capital Management LP259,749$59.69M0.1%+12.5%0.385%
5/16/2026 Daventry Group LP36,556$8.40M9.6%N/A0.054%
5/16/2026 SummitTX Capital L.P.160,909$36.98M1.2%-21.8%0.238%
5/15/2026 Dean Capital Management9,144$2.10M0.9%-24.4%0.014%
5/15/2026 Delta Global Management LP151,117$34.73M2.8%-53.8%0.224%
5/15/2026 Absolute Gestao de Investimentos Ltda.890$205K0.0%N/A0.001%
5/15/2026 OMERS ADMINISTRATION Corp1,200$276K0.0%N/A0.002%
5/14/2026 Renaissance Technologies LLC103,603$23.81M0.0%N/A0.153%
5/14/2026 Gabelli Funds LLC47,058$10.81M0.1%+0.1%0.070%
5/14/2026 Public Employees Retirement System of Ohio37,486$8.62M0.0%-32.2%0.056%
5/14/2026 Compound Planning Inc.1,085$249K0.0%N/A0.002%
5/14/2026 Modern Wealth Management LLC961$227K0.0%N/A0.001%
5/14/2026 Caxton Associates LLP8,017$1.84M0.0%+2.6%0.012%
5/14/2026 Systematic Financial Management LP242,063$55.63M1.3%-8.6%0.358%
5/14/2026 Lido Advisors LLC3,929$903K0.0%-34.6%0.006%
5/14/2026 Globeflex Capital L P34,954$8.03M1.2%-3.7%0.052%
5/14/2026 State of Wyoming3,660$841K0.1%-18.0%0.005%
5/13/2026 Cetera Investment Advisers26,512$6.09M0.0%-2.0%0.039%
5/13/2026 Bowie Capital Management LLC64,593$14.84M0.5%N/A0.096%
5/13/2026 First Trust Advisors LP52,056$11.96M0.0%-1.7%0.077%
5/8/2026 PNC Financial Services Group Inc.9,444$2.17M0.0%-5.6%0.014%
5/8/2026 Madison Asset Management LLC338,336$77.75M1.0%-63.3%0.503%
5/7/2026 Leith Wheeler Investment Counsel Ltd.37,234$8.56M0.7%-23.2%0.055%
5/7/2026 Earned Wealth Advisors LLC1,385$318K0.0%+8.6%0.002%
5/7/2026 Meeder Advisory Services Inc.5,101$1.17M0.0%+8.0%0.008%
5/7/2026 WCM Investment Management LLC12,120$2.55M0.0%-34.7%0.018%
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5/7/2026 Dimensional Fund Advisors LP835,345$191.88M0.0%-25.2%1.241%
5/7/2026 Parallel Advisors LLC1,058$243K0.0%+10.2%0.002%
5/7/2026 KBC Group NV26,137$6.01M0.0%+1,181.9%0.039%
5/7/2026 SEB Asset Management AB52,000$11.95M0.1%N/A0.077%
5/7/2026 Swiss National Bank132,900$30.54M0.0%+0.3%0.197%
5/7/2026 ANB Bank1,288$296K0.1%N/A0.002%
5/6/2026 Dorsey Wright & Associates5,784$1.33M0.2%N/A0.009%
5/6/2026 California Public Employees Retirement System123,288$28.33M0.0%+7.8%0.183%
5/6/2026 Watershed Asset Management L.L.C.1,827$420K0.4%-37.0%0.003%
5/6/2026 Kera Capital Partners Inc.2,433$559K0.1%+6.2%0.004%
5/6/2026 Angeles Wealth Management LLC875$201K0.0%N/A0.001%
5/6/2026 Bessemer Group Inc.117,851$27.08M0.0%-25.4%0.175%
5/5/2026 Sanctuary Advisors LLC7,342$1.69M0.0%-19.1%0.011%
5/4/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management2,165$498K0.0%N/A0.003%
5/4/2026 Archer Investment Corp5,066$1.16M0.2%+27.6%0.008%
5/4/2026 State of Michigan Retirement System16,140$3.71M0.0%+1.9%0.024%
5/4/2026 Principal Financial Group Inc.614,230$141.16M0.1%-19.8%0.912%
5/4/2026 Chicago Partners Investment Group LLC3,384$778K0.0%+57.1%0.005%
5/4/2026 Teachers Retirement System of The State of Kentucky32,572$7.49M0.1%-14.1%0.048%
5/1/2026 Fifth Third Bancorp19,294$4.43M0.0%+3,011.9%0.029%
5/1/2026 Sequoia Financial Advisors LLC1,445$332K0.0%-29.0%0.002%
4/30/2026 Equitable Trust Co.7,224$1.66M0.1%-38.5%0.011%
4/30/2026 Hsbc Holdings PLC2,398$551K0.0%-74.5%0.004%
4/30/2026 Mitsubishi UFJ Morgan Stanley Securities Co. Ltd.1,388$319K0.8%N/A0.002%
4/30/2026 Oregon Public Employees Retirement Fund13,766$3.16M0.0%+2.8%0.020%
4/30/2026 Quantum Portfolio Management LLC1,394$320K0.0%-51.7%0.002%
4/29/2026 Childress Capital Advisors LLC872$200K0.0%N/A0.001%
4/29/2026 Resonant Capital Advisors LLC1,250$287K0.0%N/A0.002%
4/29/2026 Burney Co.1,360$313K0.0%+7.1%0.002%
4/28/2026 Whittier Trust Co. of Nevada Inc.145$34K0.0%-32.9%0.000%
4/28/2026 Hudson Edge Investment Partners Inc.3,813$876K0.1%-39.6%0.006%
4/28/2026 QRG Capital Management Inc.3,836$881K0.0%-14.8%0.006%
4/27/2026 HB Wealth Management LLC2,034$467K0.0%N/A0.003%
4/27/2026 Counterpoint Mutual Funds LLC2,430$558K0.1%+25.1%0.004%
4/27/2026 World Investment Advisors1,226$282K0.0%-7.1%0.002%
4/27/2026 New York State Teachers Retirement System63,109$14.50M0.0%-3.3%0.094%
4/27/2026 Sierra Summit Advisors LLC4,879$1.12M0.2%N/A0.007%
4/27/2026 Private Advisor Group LLC3,144$723K0.0%-24.1%0.005%
4/27/2026 Y Intercept Hong Kong Ltd9,732$2.24M0.0%N/A0.014%
4/27/2026 Leonteq Securities AG1,179$271K0.0%+66.8%0.002%
4/27/2026 Fideuram Intesa Sanpaolo Private Banking S.P.A.2,624$603K0.0%N/A0.004%
4/25/2026 Strs Ohio45,201$10.39M0.0%-44.1%0.067%
4/25/2026 Keybank National Association OH1,308$301K0.0%N/A0.002%
4/24/2026 Root Financial Partners LLC273$63K0.0%+93.6%0.000%
4/24/2026 Fulton Bank N.A.3,228$742K0.0%-17.6%0.005%
4/23/2026 Inspire Investing LLC9,419$2.17M0.2%-14.0%0.014%
4/22/2026 Janney Montgomery Scott LLC8,650$1.99M0.0%-47.5%0.013%
4/22/2026 Pictet Asset Management Holding SA10,903$2.51M0.0%+6.4%0.016%
4/22/2026 Sterling Capital Management LLC7,058$1.62M0.0%-58.5%0.010%
4/22/2026 Venturi Wealth Management LLC2,736$629K0.0%-36.6%0.004%
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4/21/2026 GHP Investment Advisors Inc.50,487$11.60M0.5%+6.2%0.075%
4/21/2026 Aaron Wealth Advisors LLC3,928$903K0.1%-26.9%0.006%
4/21/2026 Louisiana State Employees Retirement System19,500$4.48M0.1%N/A0.029%
4/21/2026 Fairvoy Private Wealth LLC3,070$706K0.2%N/A0.005%
4/20/2026 Blue Trust Inc.4,274$982K0.0%+1.1%0.006%
4/20/2026 Fifth Third Wealth Advisors LLC2,087$480K0.0%+4.1%0.003%
4/20/2026 OP Asset Management Ltd2,828$650K0.0%N/A0.004%
4/20/2026 Assenagon Asset Management S.A.36,911$8.48M0.0%-60.2%0.055%
4/18/2026 Bourne Lent Asset Management Inc.929$213K0.1%N/A0.001%
4/18/2026 Steph & Co.962$221K0.1%-17.2%0.001%


MKSI Institutional Ownership - Frequently Asked Questions

During the previous two years, 540 institutional investors and hedge funds held shares of MKS. The most heavily invested institutionals were Vanguard Group Inc. ($1.20B), Capital International Investors ($517.63M), FMR LLC ($440.66M), Price T Rowe Associates Inc. MD ($440.07M), Victory Capital Management Inc. ($409.47M), Wellington Management Group LLP ($260.49M), and Neuberger Berman Group LLC ($233.50M).Learn more on MKS's institutional investors.

99.79% of MKS's stock is owned by institutional investors. Learn more on MKSI's institutional investor holdings.

Of the 484 institutional investors that purchased MKS's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Norges Bank ($2.60M), Millennium Management LLC ($1.38M), Channing Capital Management LLC ($991.30K), Wellington Management Group LLP ($965.32K), Madison Investment Advisors LLC ($933.94K), Westfield Capital Management Co. LP ($839.77K), and Cooke & Bieler LP ($652.00K).

Institutional investors have bought a total of 14,003,977 shares in the last 24 months. This purchase volume represents approximately $1.84B in transactions.

Of the 180 institutional investors that sold MKS's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: New York State Common Retirement Fund ($8.41M), Nordea Investment Management AB ($1.67M), Victory Capital Management Inc. ($1.30M), Royal Bank of Canada ($1.16M), Madison Asset Management LLC ($1.13M), Barclays PLC ($965.88K), and Price T Rowe Associates Inc. MD ($879.17K).

Institutional investors have sold a total of 22,436,385 shares in the last 24 months. This volume of shares sold represents approximately $3.25B in transactions.


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This page (NASDAQ:MKSI) was last updated on 6/1/2026 by MarketBeat.com Staff.
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