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MKS (MKSI) Institutional Ownership

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$261.84 -6.21 (-2.32%)
Closing price 04:00 PM Eastern
Extended Trading
$261.25 -0.59 (-0.23%)
As of 07:55 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)
364
Total
Institutional Inflows
(last 12 months)
$18.08B
Number of
Institutional Sellers
(last 12 months)
167
Total
Institutional Outflows
(last 12 months)
$3.14B
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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
9/9/2026 Sequoia Financial Advisors LLC1,961$872K0.0%+35.7%0.003%
9/9/2026 Tidal Investments LLC44,846$19.95M0.0%+42.2%0.066%
9/9/2026 Arlington Capital Management Inc.856$381K0.2%N/A0.001%
9/9/2026 BlueCrest Capital Management Ltd19,705$8.77M0.3%+11.8%0.029%
9/9/2026 WINTON GROUP Ltd6,203$2.76M0.1%+287.7%0.009%
9/9/2026 Engineers Gate Manager LP4,399$1.96M0.0%-77.8%0.007%
9/9/2026 Pinnacle Wealth Management Advisory Group LLC792$352K0.0%N/A0.001%
9/9/2026 Integrated Wealth Concepts LLC2,195$976K0.0%+6.9%0.003%
9/9/2026 NewEdge Advisors LLC6,724$2.99M0.0%-72.6%0.010%
9/9/2026 IFP Advisors Inc434$193K0.0%+129.6%0.001%
9/9/2026 Baird Financial Group Inc.2,252$1.00M0.0%+2.9%0.003%
9/8/2026 Allworth Financial LP1,402$624K0.0%+24.3%0.002%
9/8/2026 Arizona State Retirement System18,576$8.26M0.0%+0.7%0.027%
9/8/2026 West Family Investments Inc.482$214K0.1%N/A0.001%
9/8/2026 Waverly Advisors LLC846$376K0.0%N/A0.001%
9/8/2026 Nykredit A S2,289$1.02M0.0%N/A0.003%
9/4/2026 Parkside Financial Bank & Trust133$59K0.0%-26.5%0.000%
9/2/2026 Allianz Asset Management GmbH34,970$15.56M0.0%N/A0.052%
8/27/2026 Corient Private Wealth LP36,160$16.08M0.0%+0.8%0.053%
8/26/2026 HighTower Advisors LLC5,565$2.48M0.0%-55.1%0.008%
8/25/2026 VIRGINIA RETIREMENT SYSTEMS ET Al22,900$10.19M0.1%N/A0.034%
8/24/2026 California State Teachers Retirement System34,732,653$15.45B0.0%+44,581.4%51.364%
8/23/2026 Wedmont Private Capital4,098$1.82M0.0%+6.2%0.006%
8/23/2026 HB Wealth Management LLC2,752$1.22M0.0%+35.3%0.004%
8/23/2026 Angeles Wealth Management LLC917$408K0.0%+4.8%0.001%
8/22/2026 AlphaGrep UK Ltd862$383K0.1%N/A0.001%
8/22/2026 Oakmont Investment Advisors Inc.500$222K0.2%N/A0.001%
8/22/2026 Syon Capital LLC2,901$1.29M0.1%-12.7%0.004%
8/22/2026 Concurrent Investment Advisors LLC939$417K0.0%N/A0.001%
8/21/2026 AXQ Capital LP3,294$1.47M0.2%-54.6%0.005%
8/21/2026 Retireful LLC3,342$1.49M1.4%N/A0.005%
8/21/2026 Greenspring Advisors LLC483$215K0.0%N/A0.001%
8/21/2026 Nykredit A S2,289$1.02M0.0%N/A0.003%
8/20/2026 Proficio Capital Partners LLC1,054$469K0.0%N/A0.002%
8/20/2026 Spyglass Capital Management LLC118,526$52.72M2.9%N/A0.175%
8/20/2026 Teza Capital Management LLC1,084$482K0.9%N/A0.002%
8/20/2026 BTG Pactual Asset Management US LLC532$237K0.0%N/A0.001%
8/20/2026 Senator Investment Group LP65,000$28.91M1.1%N/A0.096%
8/20/2026 Sigma Planning Corp1,706$759K0.0%N/A0.003%
8/20/2026 Benjamin Edwards Inc.1,118$497K0.0%-3.7%0.002%
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8/20/2026 Flputnam Investment Management Co.485$216K0.0%N/A0.001%
8/20/2026 Northwestern Mutual Wealth Management Co.173,207$77.04M0.0%+76,880.9%0.256%
8/19/2026 Hsbc Holdings PLC56,935$24.98M0.0%+2,274.3%0.084%
8/19/2026 Archer Investment Corp4,545$2.02M0.3%N/A0.007%
8/18/2026 Empowered Funds LLC3,714$1.65M0.0%N/A0.005%
8/18/2026 United Capital Financial Advisors LLC2,866$1.28M0.0%N/A0.004%
8/18/2026Jefferies Financial Group Inc.1,023$455K0.0%N/A0.002%
8/18/2026 Public Employees Retirement System of Ohio38,346$17.06M0.1%N/A0.057%
8/17/2026 Capstone Investment Advisors LLC628$279K0.0%N/A0.001%
8/17/2026 Proficio Capital Partners LLC1,054$469K0.0%N/A0.002%
8/17/2026 Stonebridge Capital Management Inc.1,000$445K0.2%N/A0.001%
8/17/2026 Pure Financial Advisors LLC754$336K0.0%N/A0.001%
8/17/2026 Transamerica Financial Advisors LLC89$40K0.0%N/A0.000%
8/17/2026 Corient Private Wealth LP34,868$15.51M0.0%N/A0.052%
8/17/2026 Park West Asset Management LLC138,740$61.71M4.2%N/A0.205%
8/17/2026 Bank of America Corp DE520,847$231.67M0.0%N/A0.770%
8/15/2026 Strategic Global Advisors LLC13,030$5.80M0.8%N/A0.019%
8/15/2026 Light Street Capital Management LLC103,800$46.17M5.2%-15.1%0.154%
8/15/2026 First Bancorp Inc ME161$72K0.0%N/A0.000%
8/15/2026 Jupiter Topco LLC29,470$13.11M0.0%N/A0.044%
8/14/2026 Hsbc Holdings PLC56,935$24.98M0.0%N/A0.084%
8/14/2026 Ancora Advisors LLC82$36K0.0%N/A0.000%
8/14/2026 Expect Equity LLC10,655$4.74M3.0%N/A0.016%
8/14/2026 PDT Partners LLC72,347$32.18M1.7%N/A0.107%
8/14/2026 Canada Pension Plan Investment Board53,200$23.66M0.0%N/A0.079%
8/14/2026 Legal & General Group Plc117,817$51.82M0.0%N/A0.174%
8/14/2026 Jones Financial Companies Lllp158$70K0.0%N/A0.000%
8/14/2026 Cetera Trust Company N.A2,915$1.30M0.7%N/A0.004%
8/14/2026 Algert Global LLC45,270$20.14M0.2%+2.7%0.067%
8/13/2026 Infrastructure Capital Advisors LLC2,014$896K0.1%N/A0.003%
8/13/2026 Maxi Investments CY Ltd1,957$870K0.2%N/A0.003%
8/13/2026 Cibc World Market Inc.615$274K0.0%N/A0.001%
8/13/2026 OMERS ADMINISTRATION Corp1,200$534K0.0%N/A0.002%
8/13/2026 Sanctuary Advisors LLC7,897$3.51M0.0%N/A0.012%
8/13/2026 Wealth High Governance Capital Ltda27,600$12.28M3.7%N/A0.041%
8/13/2026 Meiji Yasuda Asset Management Co Ltd.1,563$695K0.0%N/A0.002%
8/13/2026 Globeflex Capital L P29,241$13.01M1.7%N/A0.043%
8/12/2026 Commerce Bank6,224$2.77M0.0%N/A0.009%
8/12/2026 Pinnbrook Capital Management LP12,700$5.65M0.6%N/A0.019%
8/12/2026 Northwestern Mutual Wealth Management Co.173,207$77.04M0.0%N/A0.256%
8/12/2026 Quantbot Technologies LP7,715$3.43M0.1%N/A0.011%
8/12/2026 Fourier Capital Management Ltd29,858$13.28M20.8%N/A0.044%
8/12/2026 Harber Asset Management LLC9,100$4.05M2.4%N/A0.013%
8/12/2026 Landscape Capital Management L.L.C.775$345K0.0%N/A0.001%
8/12/2026 EP Wealth Advisors LLC3,335$1.48M0.0%N/A0.005%
8/12/2026 Rakuten Securities Inc.89$40K0.0%N/A0.000%
8/12/2026 Ieq Capital LLC21,702$9.65M0.0%N/A0.032%
8/12/2026 Callan Family Office LLC4,093$1.82M0.0%N/A0.006%
8/11/2026 Keating Financial Advisory Services Inc.56$25K0.0%N/A0.000%
8/11/2026 Bowie Capital Management LLC42,649$18.97M0.8%N/A0.063%
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8/11/2026 Allworth Financial LP1,402$624K0.0%N/A0.002%
8/11/2026 Greenspring Advisors LLC483$215K0.0%N/A0.001%
8/11/2026 NFJ Investment Group LLC36,697$16.32M0.6%N/A0.054%
8/11/2026 Ceredex Value Advisors LLC56,650$25.20M0.7%N/A0.084%
8/11/2026 MJP Associates Inc. ADV604$269K0.0%N/A0.001%
8/11/2026 Trillium Asset Management LLC11,334$5.04M0.2%N/A0.017%
8/11/2026 Value Holdings Management CO. LLC159,452$70.93M11.9%N/A0.236%
8/11/2026 Vise Technologies Inc.8,211$3.65M0.0%N/A0.012%
8/11/2026 OVERSEA CHINESE BANKING Corp Ltd18,477$8.22M0.2%N/A0.027%
8/11/2026 Madison Asset Management LLC316,694$140.87M1.7%N/A0.469%


MKSI Institutional Ownership - Frequently Asked Questions

During the previous two years, 585 institutional investors and hedge funds held shares of MKS. The most heavily invested institutionals were California State Teachers Retirement System ($15.45B), 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), and Wellington Management Group LLP ($260.49M).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 529 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: California State Teachers Retirement System ($34.67M), Norges Bank ($2.60M), Millennium Management LLC ($1.14M), Channing Capital Management LLC ($991.30K), Wellington Management Group LLP ($965.32K), Madison Investment Advisors LLC ($933.94K), and Westfield Capital Management Co. LP ($839.77K).

Institutional investors have bought a total of 46,349,062 shares in the last 24 months. This purchase volume represents approximately $18.08B in transactions.

Of the 167 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), Victory Capital Management Inc. ($1.30M), Royal Bank of Canada ($1.16M), Madison Asset Management LLC ($1.13M), Nordea Investment Management AB ($1.09M), Barclays PLC ($965.88K), and Price T Rowe Associates Inc. MD ($879.17K).

Institutional investors have sold a total of 20,980,532 shares in the last 24 months. This volume of shares sold represents approximately $3.14B in transactions.


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Institutional ownership data for NASDAQ:MKSI is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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