MKS Instruments (MKSI) Institutional Ownership $89.56 +1.10 (+1.24%) As of 05/20/2025 04:00 PM Eastern Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for MKS Instruments (NASDAQ:MKSI)CurrentInstitutional OwnershipPercentage99.79%Number ofInstitutional Buyers(last 12 months)276TotalInstitutional Inflows(last 12 months)$1.49BNumber ofInstitutional Sellers(last 12 months)171TotalInstitutional Outflows(last 12 months)$961.21M Get MKSI Insider Trade Alerts Want to know when executives and insiders are buying or selling MKS Instruments stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data MKSI Institutional Buying and Selling by Quarter MKS Instruments Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/19/2025 UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC267,421$21.43M0.0%+3.6%0.396% 5/16/2025 United Services Automobile Association4,195$342K0.0%N/A0.006% 5/16/2025 Great Lakes Advisors LLC42,156$3.38M0.0%-76.2%0.063% 5/16/2025 Goldman Sachs Group Inc.232,994$18.67M0.0%-76.3%0.345% 5/16/2025 Dynamic Technology Lab Private Ltd11,721$939K0.1%N/A0.017% 5/16/2025 Needham Investment Management LLC128,750$10.32M1.0%-0.2%0.191% 5/16/2025 NFJ Investment Group LLC60,094$4.82M0.2%+344.5%0.089% 5/16/2025 Nissay Asset Management Corp Japan ADV40,366$3.24M0.0%+8.6%0.060% 5/16/2025 Millennium Management LLC545,109$43.69M0.0%+132.2%0.808% 5/16/2025 Curi RMB Capital LLC24,434$1.96M0.0%-2.5%0.036% Get the Latest News and Ratings for MKSI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for MKS Instruments and its competitors with MarketBeat's FREE daily newsletter. 5/16/2025 AQR Arbitrage LLC30,200$2.38M0.1%N/A0.045% 5/16/2025 AQR Capital Management LLC70,211$5.53M0.0%+19.4%0.104% 5/16/2025 Amundi79,492$6.37M0.0%-71.5%0.118% 5/15/2025 EP Wealth Advisors LLC3,466$278K0.0%N/A0.005% 5/15/2025 Royal Bank of Canada524,837$42.07M0.0%+28.2%0.778% 5/15/2025 Quarry LP380$30K0.0%-51.7%0.001% 5/15/2025 Nomura Holdings Inc.400,234$32.08M0.1%-4.6%0.593% 5/15/2025 Harber Asset Management LLC82,140$6.58M2.3%N/A0.122% 5/15/2025 Sculptor Capital LP63,300$5.07M0.1%N/A0.094% 5/15/2025 Expect Equity LLC29,610$2.37M2.7%-9.7%0.044% 5/15/2025 Aperture Investors LLC205,209$16.45M2.1%-11.2%0.304% 5/15/2025 Kodai Capital Management LP708,021$56.75M2.2%+138.3%1.050% 5/15/2025 The Manufacturers Life Insurance Company 543,421$43.56M0.0%+10.6%0.806% 5/15/2025 Canada Pension Plan Investment Board27,800$2.23M0.0%+12.6%0.041% 5/15/2025 Trexquant Investment LP65,961$5.29M0.1%+357.4%0.098% 5/14/2025 Truvestments Capital LLC727$58K0.0%-71.6%0.001% 5/14/2025 Gamco Investors INC. ET AL8,545$685K0.0%+110.5%0.013% 5/14/2025 Gabelli Funds LLC37,386$3.00M0.0%+16.5%0.055% 5/14/2025 Keeley Teton Advisors LLC8,712$698K0.1%+36.4%0.013% 5/14/2025 Rafferty Asset Management LLC537,469$43.08M0.2%-6.8%0.797% 5/14/2025 Corebridge Financial Inc.74,375$5.96M0.0%-2.4%0.110% 5/14/2025 Comerica Bank26,914$2.16M0.0%+4.0%0.040% 5/14/2025 MetLife Investment Management LLC37,534$3.01M0.0%-1.5%0.056% 5/14/2025 Systematic Financial Management LP222,235$17.81M0.5%+1.2%0.329% 5/14/2025 Jump Financial LLC15,682$1.26M0.0%N/A0.023% 5/14/2025 Channing Capital Management LLC552,960$44.32M1.3%N/A0.820% 5/14/2025 Price T Rowe Associates Inc. MD3,515,373$281.76M0.0%+5.2%5.212% 5/14/2025 EntryPoint Capital LLC5,304$425K0.2%N/A0.008% 5/14/2025 Hsbc Holdings PLC3,052$245K0.0%-35.4%0.005% 5/14/2025 Wellington Management Group LLP3,250,085$260.49M0.1%+41.8%4.819% Get Your Bank Account “Fed Invasion” Ready with THESE 4 Simple Steps (Ad)Starting as soon as a few months from now, the United States government will make a sweeping change to bank accounts nationwide. It will give them unprecedented powers to control your bank account.Learn these 4 simple steps and protect your savings before it’s too late.5/13/2025 Northern Trust Corp634,204$50.83M0.0%+4.2%0.940% 5/13/2025 Brooklyn Investment Group799$64K0.0%+1,168.3%0.001% 5/13/2025 Roubaix Capital LLC31,531$2.53M1.3%-41.8%0.047% 5/13/2025 Raymond James Financial Inc.262,567$21.05M0.0%-3.2%0.389% 5/13/2025 Ethic Inc.17,863$1.43M0.0%+7.2%0.026% 5/13/2025 Sei Investments Co.148,065$11.87M0.1%-2.0%0.220% 5/13/2025 Kovitz Investment Group Partners LLC2,925$234K0.0%N/A0.004% 5/13/2025 Sit Investment Associates Inc.39,125$3.14M0.1%+1.8%0.058% 5/13/2025 Leith Wheeler Investment Counsel Ltd.73,174$5.87M0.4%+1.2%0.108% 5/13/2025 Russell Investments Group Ltd.30,985$2.48M0.0%+8.5%0.046% 5/13/2025 HighTower Advisors LLC3,589$288K0.0%+22.4%0.005% 5/12/2025 Nuveen LLC137,121$10.99M0.0%N/A0.203% 5/12/2025 Aigen Investment Management LP11,908$954K0.2%+67.3%0.018% 5/12/2025 Invesco Ltd.2,049,563$164.27M0.0%-8.2%3.039% 5/12/2025 Mizuho Markets Americas LLC283,706$22.74M0.5%-0.4%0.421% 5/12/2025 National Bank of Canada FI5,321$427K0.0%-94.8%0.008% 5/12/2025 Citigroup Inc.385,478$30.90M0.0%-20.2%0.572% 5/12/2025 Swiss National Bank130,400$10.45M0.0%-1.4%0.193% 5/12/2025 Maryland State Retirement & Pension System3,124$250K0.0%-17.9%0.005% 5/9/2025 Headlands Technologies LLC26,106$2.09M0.2%+86.3%0.039% 5/9/2025 Deutsche Bank AG132,629$10.63M0.0%+1.2%0.197% 5/9/2025 Charles Schwab Investment Management Inc.718,239$57.57M0.0%+7.8%1.065% 5/9/2025 Vanguard Group Inc.7,450,615$597.17M0.0%+0.1%11.047% 5/9/2025 New Age Alpha Advisors LLC1,412$113K0.0%-23.8%0.002% 5/9/2025 Argent Trust Co3,350$269K0.0%-6.2%0.005% 5/9/2025 Phocas Financial Corp.30,235$2.42M0.4%-5.4%0.045% 5/9/2025 Banco Santander S.A.11,499$922K0.0%-40.5%0.017% 5/9/2025 OVERSEA CHINESE BANKING Corp Ltd31,903$2.56M0.1%N/A0.047% 5/9/2025 PNC Financial Services Group Inc.5,923$475K0.0%-25.9%0.009% 5/8/2025 Blueshift Asset Management LLC3,563$286K0.1%N/A0.005% 5/8/2025 Commerce Bank4,512$362K0.0%-26.0%0.007% 5/8/2025Jefferies Financial Group Inc.4,053$325K0.0%-96.4%0.006% 5/8/2025 Natixis Advisors LLC264,124$21.17M0.0%-6.8%0.392% 5/8/2025 XTX Topco Ltd4,588$368K0.0%N/A0.007% 5/8/2025 Federated Hermes Inc.83,775$6.72M0.0%+176.9%0.124% 5/7/2025 First National Advisers LLC13,670$1.10M0.2%+62.1%0.020% 5/7/2025 LPL Financial LLC20,068$1.61M0.0%-20.2%0.030% 5/7/2025 Zurcher Kantonalbank Zurich Cantonalbank 17,725$1.42M0.0%+10.2%0.026% 5/6/2025 Pacer Advisors Inc.5,093$408K0.0%-67.4%0.008% 5/6/2025 Cetera Investment Advisers25,599$2.05M0.0%+9.2%0.038% 5/6/2025 Avantax Advisory Services Inc.3,627$291K0.0%+69.2%0.005% 5/6/2025 Royce & Associates LP793,244$63.58M0.7%+7.3%1.176% 5/6/2025 Madison Asset Management LLC1,428,143$114.47M1.3%+52.9%2.117% 5/6/2025 Venturi Wealth Management LLC3,993$320K0.0%+35.4%0.006% 5/6/2025 Oak Thistle LLC3,349$268K0.1%+18.6%0.005% 5/6/2025 Readystate Asset Management LP63,187$5.06M0.2%+55.5%0.094% 5/6/2025 KLP Kapitalforvaltning AS13,200$1.06M0.0%-4.3%0.020% 5/6/2025 Universal Beteiligungs und Servicegesellschaft mbH10,885$872K0.0%N/A0.016% 5/6/2025 Y Intercept Hong Kong Ltd4,866$390K0.0%N/A0.007% 5/5/2025 Teachers Retirement System of The State of Kentucky40,833$3.27M0.0%+21.7%0.061% Get Your Bank Account “Fed Invasion” Ready with THESE 4 Simple Steps (Ad)Starting as soon as a few months from now, the United States government will make a sweeping change to bank accounts nationwide. It will give them unprecedented powers to control your bank account.Learn these 4 simple steps and protect your savings before it’s too late.5/5/2025 South Dakota Investment Council6,881$552K0.0%-25.1%0.010% 5/5/2025 Impact Partnership Wealth LLC2,970$238K0.1%N/A0.004% 5/5/2025 Archer Investment Corp3,970$318K0.1%+27.7%0.006% 5/2/2025 Cooke & Bieler LP1,038,945$83.27M0.8%+18.5%1.540% 5/2/2025 Tributary Capital Management LLC9,115$731K0.1%+4.2%0.014% 5/2/2025 Segall Bryant & Hamill LLC92,784$7.44M0.1%+3.0%0.138% 5/2/2025 Victory Capital Management Inc.3,388,639$271.60M0.3%+9.7%5.024% 5/2/2025 OVERSEA CHINESE BANKING Corp Ltd31,903$2.56M0.0%N/A0.047% 5/2/2025 Signaturefd LLC828$66K0.0%+79.2%0.001% 5/1/2025 CWM LLC2,574$206K0.0%+64.8%0.004% (Data available from 1/1/2016 forward) MKSI Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of MKSI shares? During the previous two years, 409 institutional investors and hedge funds held shares of MKS Instruments. The most heavily invested institutionals were BlackRock Inc. ($618.15M), Vanguard Group Inc. ($597.17M), FMR LLC ($440.66M), Carlyle Group Inc. ($376.48M), Capital International Investors ($323.37M), Price T Rowe Associates Inc. MD ($281.76M), and Victory Capital Management Inc. ($271.60M).Learn more on MKSI's institutional investors. What percentage of MKS Instruments stock is owned by institutional investors? 99.79% of MKS Instruments stock is owned by institutional investors. Learn more on MKSI's institutional investor holdings. Which institutional investors have been buying MKS Instruments stock? Of the 348 institutional investors that purchased MKS Instruments stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Nordea Investment Management AB ($2.34M), Norges Bank ($1.96M), Victory Capital Management Inc. ($1.22M), Wellington Management Group LLP ($965.32K), Madison Investment Advisors LLC ($933.94K), Barclays PLC ($820.60K), and Westfield Capital Management Co. LP ($620.06K). How much institutional buying is happening at MKS Instruments? Institutional investors have bought a total of 24,473,974 shares in the last 24 months. This purchase volume represents approximately $2.51B in transactions. Which MKS Instruments major shareholders have been selling company stock? Of the 216 institutional investors that sold MKS Instruments stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Carlyle Group Inc. ($5M), Capital International Investors ($1.74M), JPMorgan Chase & Co. ($1.54M), Goldman Sachs Group Inc. ($1.47M), Price T Rowe Associates Inc. MD ($1.46M), Wellington Management Group LLP ($1.42M), and Victory Capital Management Inc. ($1.04M). How much institutional selling is happening at MKS Instruments? Institutional investors have sold a total of 19,982,232 shares in the last 24 months. This volume of shares sold represents approximately $2.12B in transactions. Related Companies ENTG Major Shareholders ONTO Major Shareholders AMKR Major Shareholders AEIS Major Shareholders FORM Major Shareholders ACLS Major Shareholders PLAB Major Shareholders VECO Major Shareholders UCTT Major Shareholders COHU Major Shareholders This page (NASDAQ:MKSI) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. By the time he left, it had soared to $1,839. ...Premier Gold Co | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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But what if there were a smart, tax-free way to ...Colonial Metals | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding MKS Instruments, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share MKS Instruments With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. 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