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MKS (MKSI) Institutional Ownership

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$265.36 -0.66 (-0.25%)
Closing price 04:00 PM Eastern
Extended Trading
$265.05 -0.31 (-0.12%)
As of 07:34 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)
366
Total
Institutional Inflows
(last 12 months)
$2.64B
Number of
Institutional Sellers
(last 12 months)
166
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
9/23/2026QRG Capital Management Inc.4,121$1.83M0.0%+7.4%0.006%
9/23/2026Envestnet Portfolio Solutions Inc.594$264K0.0%N/A0.001%
9/15/2026Reynders McVeigh Capital Management LLC513$228K0.0%N/A0.001%
9/9/2026Sequoia Financial Advisors LLC1,961$872K0.0%+35.7%0.003%
9/9/2026Tidal Investments LLC44,846$19.95M0.0%+42.2%0.066%
9/9/2026Arlington Capital Management Inc.856$381K0.2%N/A0.001%
9/9/2026BlueCrest Capital Management Ltd19,705$8.77M0.3%+11.8%0.029%
9/9/2026WINTON GROUP Ltd6,203$2.76M0.1%+287.7%0.009%
9/9/2026Engineers Gate Manager LP4,399$1.96M0.0%-77.8%0.007%
9/9/2026Pinnacle Wealth Management Advisory Group LLC792$352K0.0%N/A0.001%
9/9/2026Integrated Wealth Concepts LLC2,195$976K0.0%+6.9%0.003%
9/9/2026NewEdge Advisors LLC6,724$2.99M0.0%-72.6%0.010%
9/9/2026IFP Advisors Inc434$193K0.0%+129.6%0.001%
9/9/2026Baird Financial Group Inc.2,252$1.00M0.0%+2.9%0.003%
9/8/2026Allworth Financial LP1,402$624K0.0%+24.3%0.002%
9/8/2026Arizona State Retirement System18,576$8.26M0.0%+0.7%0.027%
9/8/2026West Family Investments Inc.482$214K0.1%N/A0.001%
9/8/2026Waverly Advisors LLC846$376K0.0%N/A0.001%
9/8/2026Nykredit A S2,289$1.02M0.0%N/A0.003%
9/4/2026Parkside Financial Bank & Trust133$59K0.0%-26.5%0.000%
9/2/2026Allianz Asset Management GmbH34,970$15.56M0.0%N/A0.052%
8/27/2026Corient Private Wealth LP36,160$16.08M0.0%+0.8%0.053%
8/26/2026HighTower Advisors LLC5,565$2.48M0.0%-55.1%0.008%
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al22,900$10.19M0.1%N/A0.034%
8/23/2026Wedmont Private Capital4,098$1.82M0.0%+6.2%0.006%
8/23/2026HB Wealth Management LLC2,752$1.22M0.0%+35.3%0.004%
8/23/2026Angeles Wealth Management LLC917$408K0.0%+4.8%0.001%
8/22/2026AlphaGrep UK Ltd862$383K0.1%N/A0.001%
8/22/2026Oakmont Investment Advisors Inc.500$222K0.2%N/A0.001%
8/22/2026Syon Capital LLC2,901$1.29M0.1%-12.7%0.004%
8/22/2026Concurrent Investment Advisors LLC939$417K0.0%N/A0.001%
8/21/2026AXQ Capital LP3,294$1.47M0.2%-54.6%0.005%
8/21/2026Retireful LLC3,342$1.49M1.4%N/A0.005%
8/21/2026Greenspring Advisors LLC483$215K0.0%N/A0.001%
8/21/2026Nykredit A S2,289$1.02M0.0%N/A0.003%
8/20/2026Proficio Capital Partners LLC1,054$469K0.0%N/A0.002%
8/20/2026Spyglass Capital Management LLC118,526$52.72M2.9%N/A0.175%
8/20/2026Teza Capital Management LLC1,084$482K0.9%N/A0.002%
8/20/2026BTG Pactual Asset Management US LLC532$237K0.0%N/A0.001%
8/20/2026Senator Investment Group LP65,000$28.91M1.1%N/A0.096%
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8/20/2026Sigma Planning Corp1,706$759K0.0%N/A0.003%
8/20/2026Benjamin Edwards Inc.1,118$497K0.0%-3.7%0.002%
8/20/2026Flputnam Investment Management Co.485$216K0.0%N/A0.001%
8/20/2026Northwestern Mutual Wealth Management Co.173,207$77.04M0.0%+76,880.9%0.256%
8/19/2026Hsbc Holdings PLC56,935$24.98M0.0%+2,274.3%0.084%
8/19/2026Archer Investment Corp4,545$2.02M0.3%N/A0.007%
8/18/2026Empowered Funds LLC3,714$1.65M0.0%N/A0.005%
8/18/2026United Capital Financial Advisors LLC2,866$1.28M0.0%N/A0.004%
8/18/2026Jefferies Financial Group Inc.1,023$455K0.0%N/A0.002%
8/18/2026Public Employees Retirement System of Ohio38,346$17.06M0.1%N/A0.057%
8/17/2026Capstone Investment Advisors LLC628$279K0.0%N/A0.001%
8/17/2026Proficio Capital Partners LLC1,054$469K0.0%N/A0.002%
8/17/2026Stonebridge Capital Management Inc.1,000$445K0.2%N/A0.001%
8/17/2026Pure Financial Advisors LLC754$336K0.0%N/A0.001%
8/17/2026Transamerica Financial Advisors LLC89$40K0.0%N/A0.000%
8/17/2026Corient Private Wealth LP34,868$15.51M0.0%N/A0.052%
8/17/2026Park West Asset Management LLC138,740$61.71M4.2%N/A0.205%
8/17/2026Bank of America Corp DE520,847$231.67M0.0%N/A0.770%
8/15/2026Strategic Global Advisors LLC13,030$5.80M0.8%N/A0.019%
8/15/2026Light Street Capital Management LLC103,800$46.17M5.2%-15.1%0.154%
8/15/2026First Bancorp Inc ME161$72K0.0%N/A0.000%
8/15/2026Jupiter Topco LLC29,470$13.11M0.0%N/A0.044%
8/14/2026Hsbc Holdings PLC56,935$24.98M0.0%N/A0.084%
8/14/2026Ancora Advisors LLC82$36K0.0%N/A0.000%
8/14/2026Expect Equity LLC10,655$4.74M3.0%N/A0.016%
8/14/2026PDT Partners LLC72,347$32.18M1.7%N/A0.107%
8/14/2026Canada Pension Plan Investment Board53,200$23.66M0.0%N/A0.079%
8/14/2026Legal & General Group Plc117,817$51.82M0.0%N/A0.174%
8/14/2026Jones Financial Companies Lllp158$70K0.0%N/A0.000%
8/14/2026Cetera Trust Company N.A2,915$1.30M0.7%N/A0.004%
8/14/2026Algert Global LLC45,270$20.14M0.2%+2.7%0.067%
8/13/2026Infrastructure Capital Advisors LLC2,014$896K0.1%N/A0.003%
8/13/2026Maxi Investments CY Ltd1,957$870K0.2%N/A0.003%
8/13/2026Cibc World Market Inc.615$274K0.0%N/A0.001%
8/13/2026OMERS ADMINISTRATION Corp1,200$534K0.0%N/A0.002%
8/13/2026Sanctuary Advisors LLC7,897$3.51M0.0%N/A0.012%
8/13/2026Wealth High Governance Capital Ltda27,600$12.28M3.7%N/A0.041%
8/13/2026Meiji Yasuda Asset Management Co Ltd.1,563$695K0.0%N/A0.002%
8/13/2026Globeflex Capital L P29,241$13.01M1.7%N/A0.043%
8/12/2026Commerce Bank6,224$2.77M0.0%N/A0.009%
8/12/2026Pinnbrook Capital Management LP12,700$5.65M0.6%N/A0.019%
8/12/2026Northwestern Mutual Wealth Management Co.173,207$77.04M0.0%N/A0.256%
8/12/2026Quantbot Technologies LP7,715$3.43M0.1%N/A0.011%
8/12/2026Fourier Capital Management Ltd29,858$13.28M20.8%N/A0.044%
8/12/2026Harber Asset Management LLC9,100$4.05M2.4%N/A0.013%
8/12/2026Landscape Capital Management L.L.C.775$345K0.0%N/A0.001%
8/12/2026EP Wealth Advisors LLC3,335$1.48M0.0%N/A0.005%
8/12/2026Rakuten Securities Inc.89$40K0.0%N/A0.000%
8/12/2026Ieq Capital LLC21,702$9.65M0.0%N/A0.032%
8/12/2026Callan Family Office LLC4,093$1.82M0.0%N/A0.006%
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8/11/2026Keating Financial Advisory Services Inc.56$25K0.0%N/A0.000%
8/11/2026Bowie Capital Management LLC42,649$18.97M0.8%N/A0.063%
8/11/2026Allworth Financial LP1,402$624K0.0%N/A0.002%
8/11/2026Greenspring Advisors LLC483$215K0.0%N/A0.001%
8/11/2026NFJ Investment Group LLC36,697$16.32M0.6%N/A0.054%
8/11/2026Ceredex Value Advisors LLC56,650$25.20M0.7%N/A0.084%
8/11/2026MJP Associates Inc. ADV604$269K0.0%N/A0.001%
8/11/2026Trillium Asset Management LLC11,334$5.04M0.2%N/A0.017%
8/11/2026Value Holdings Management CO. LLC159,452$70.93M11.9%N/A0.236%
8/11/2026Vise Technologies Inc.8,211$3.65M0.0%N/A0.012%


MKSI Institutional Ownership - Frequently Asked Questions

During the previous two years, 586 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 530 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 ($1.14M), 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 Bank of America Corp DE ($822.07K).

Institutional investors have bought a total of 11,693,159 shares in the last 24 months. This purchase volume represents approximately $2.64B in transactions.

Of the 166 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 20,949,643 shares in the last 24 months. This volume of shares sold represents approximately $3.14B in transactions.


Related Companies

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 9/23/2026. New 13F filings are added each quarter as they're published.
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