Trinseo (TSE) Institutional Ownership $2.38 -0.02 (-0.63%) Closing price 08/29/2025 03:59 PM EasternExtended Trading$2.40 +0.02 (+0.84%) As of 08/29/2025 06:48 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 Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisChartCompetitorsDividendEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Trinseo (NYSE:TSE)CurrentInstitutional OwnershipPercentage82.69%Number ofInstitutional Buyers(last 12 months)52TotalInstitutional Inflows(last 12 months)$29.16MNumber ofInstitutional Sellers(last 12 months)23TotalInstitutional Outflows(last 12 months)$18.54M Get TSE Insider Trade Alerts Want to know when executives and insiders are buying or selling Trinseo stock? 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Skip Chart & View Institutional Buying and Selling Data TSE Institutional Buying and Selling by Quarter Trinseo Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 Sugar Maple Asset Management LLC13,000$41K0.0%N/A0.036% 8/15/2025 Owl Creek Asset Management L.P.1,669,952$5.21M0.2%+337.0%4.645% 8/15/2025 Engineers Gate Manager LP72,806$227K0.0%+625.5%0.203% 8/15/2025 BNP Paribas Financial Markets41,586$130K0.0%+80.2%0.116% 8/15/2025 Bank of America Corp DE302,965$945K0.0%-2.7%0.843% 8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.18,600$58K0.0%N/A0.052% 8/13/2025 Marshall Wace LLP190,397$594K0.0%-77.9%0.530% 8/13/2025 Invesco Ltd.195,259$609K0.0%-23.6%0.543% 8/13/2025 Icon Advisers Inc. Co.750,000$2.34M0.5%N/A2.086% 8/13/2025 New York State Common Retirement Fund29,500$92K0.0%N/A0.082% Get the Latest News and Ratings for TSE and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Trinseo and its competitors with MarketBeat's FREE daily newsletter. 8/12/2025 JPMorgan Chase & Co.364,444$1.14M0.0%-6.5%1.014% 8/8/2025 Intech Investment Management LLC15,514$48K0.0%N/A0.044% 8/8/2025 Police & Firemen s Retirement System of New Jersey8,769$27K0.0%N/A0.025% 8/8/2025 Geode Capital Management LLC823,044$2.57M0.0%+105.8%2.309% 8/7/2025 Los Angeles Capital Management LLC34,760$108K0.0%N/A0.098% 8/1/2025 May Hill Capital LLC10,594$33K0.0%N/A0.030% 6/27/2025 Goldman Sachs Group Inc.343,604$1.26M0.0%+43.0%0.964% 5/21/2025 Acadian Asset Management LLC329,306$1.21M0.0%+267.9%0.924% 5/19/2025 Jane Street Group LLC267,745$985K0.0%-19.0%0.751% 5/16/2025 Goldman Sachs Group Inc.343,604$1.26M0.0%+43.0%0.964% 5/16/2025 Dynamic Technology Lab Private Ltd32,107$118K0.0%N/A0.090% 5/15/2025 Cubist Systematic Strategies LLC50,656$186K0.0%-15.1%0.142% 5/15/2025 OMERS ADMINISTRATION Corp72,200$266K0.0%+11.6%0.203% 5/14/2025 Jump Financial LLC45,802$169K0.0%-15.7%0.128% 5/14/2025 Brightline Capital Management LLC1,016,000$3.74M3.2%+7.5%2.850% 5/12/2025 Kohmann Bosshard Financial Services LLC44,605$164K0.0%+28.9%0.125% 5/12/2025 Alta Fundamental Advisers LLC53,618$197K0.1%-86.3%0.150% 5/12/2025 Invesco Ltd.255,668$941K0.0%-18.7%0.717% 5/9/2025 Charles Schwab Investment Management Inc.362,646$1.34M0.0%-31.2%1.017% 3/17/2025 NorthCrest Asset Manangement LLC11,800$60K0.0%-35.5%0.033% 2/27/2025Jefferies Financial Group Inc.30,000$153K0.0%+14.5%0.085% 2/18/2025 PharVision Advisers LLC58,413$298K0.3%N/A0.165% 2/17/2025 Squarepoint Ops LLC10,918$56K0.0%-72.6%0.031% 2/17/2025 Two Sigma Advisers LP204,400$1.04M0.0%-9.1%0.577% 2/17/2025 Two Sigma Investments LP326,592$1.67M0.0%+2.7%0.923% 2/17/2025 State of Wyoming10,373$53K0.0%N/A0.029% 2/17/2025 Point72 Asia Singapore Pte. Ltd.36,965$189K0.0%+33.5%0.104% 2/17/2025 Man Group plc18,778$96K0.0%N/A0.053% 2/17/2025 OMERS ADMINISTRATION Corp64,700$330K0.0%N/A0.183% 2/17/2025 Millennium Management LLC178,244$909K0.0%-61.0%0.504% Take a look at this picture ... (Ad)A strange investment secret — discovered just a few short weeks before this image was taken — correctly predicted it all. Even crazier, this secret accurately called every major financial event in recent history … Now it's signaling something very scary is about to hit the market again …To find out more about this Great Depression secret … Click here for all the details.2/17/2025Jefferies Financial Group Inc.30,000$153K0.0%+14.5%0.085% 2/17/2025 D. E. Shaw & Co. Inc.581,795$2.97M0.0%-32.6%1.643% 2/17/2025 Cubist Systematic Strategies LLC59,639$304K0.0%-33.4%0.168% 2/17/2025 CastleKnight Management LP2,479,618$12.65M0.4%+128.1%7.005% 2/17/2025 Cetera Investment Advisers15,991$82K0.0%N/A0.045% 2/17/2025 Bank of America Corp DE335,947$1.71M0.0%+3.9%0.949% 2/17/2025 BNP Paribas Financial Markets14,493$74K0.0%N/A0.041% 2/17/2025 Alta Fundamental Advisers LLC390,500$1.99M0.6%-0.7%1.103% 2/17/2025 683 Capital Management LLC124,763$636K0.0%N/A0.352% 2/14/2025 Jane Street Group LLC330,467$1.69M0.0%+32.4%0.934% 2/14/2025 Schonfeld Strategic Advisors LLC49,645$253K0.0%N/A0.140% 2/14/2025 Tudor Investment Corp ET AL16,688$85K0.0%-11.2%0.047% 2/14/2025 Quarry LP15,571$79K0.0%N/A0.044% 2/14/2025 Boothbay Fund Management LLC19,464$99K0.0%N/A0.055% 2/14/2025 Susquehanna Fundamental Investments LLC15,742$80K0.0%N/A0.044% 2/14/2025 Two Sigma Securities LLC11,871$61K0.0%-15.7%0.034% 2/14/2025 Dimensional Fund Advisors LP41,224$210K0.0%N/A0.116% 2/13/2025 Marshall Wace LLP618,192$3.15M0.0%+1.7%1.746% 2/13/2025 Jump Financial LLC54,324$277K0.0%N/A0.153% 2/13/2025 XTX Topco Ltd52,710$269K0.0%-40.3%0.149% 2/13/2025 Barclays PLC48,352$247K0.0%+48.5%0.137% 2/13/2025 Brightline Capital Management LLC945,000$4.82M3.8%N/A2.669% 2/13/2025 Covestor Ltd7,144$36K0.0%N/A0.020% 2/13/2025 Renaissance Technologies LLC229,300$1.17M0.0%+18.1%0.648% 2/13/2025 Invesco Ltd.314,658$1.61M0.0%+0.9%0.889% 2/12/2025 Geode Capital Management LLC388,751$1.98M0.0%+0.7%1.098% 2/12/2025 JPMorgan Chase & Co.229,503$1.17M0.0%-46.7%0.648% 2/11/2025 LPL Financial LLC19,936$102K0.0%N/A0.056% 2/11/2025 Truffle Hound Capital LLC350,000$1.79M0.6%N/A0.989% 2/11/2025 Virtu Financial LLC32,587$166K0.0%N/A0.092% 2/10/2025 Thrivent Financial for Lutherans116,248$593K0.0%-28.8%0.328% 2/6/2025 Charles Schwab Investment Management Inc.526,924$2.69M0.0%-48.6%1.488% 1/30/2025 Rhumbline Advisers7,879$40K0.0%+103.2%0.022% 1/17/2025 SG Americas Securities LLC10,097$51K0.0%N/A0.029% 12/26/2024 JPMorgan Chase & Co.430,340$2.20M0.0%+10.4%1.216% 11/19/2024 Barclays PLC32,566$167K0.0%-81.5%0.092% 11/16/2024 Geode Capital Management LLC385,931$1.97M0.0%+4.0%1.090% 11/15/2024 Barclays PLC32,566$167K0.0%-81.5%0.092% 11/15/2024 Public Employees Retirement System of Ohio12,202$62K0.0%-66.8%0.034% 11/15/2024 XTX Topco Ltd88,262$451K0.0%+19.1%0.249% 11/15/2024 Jane Street Group LLC249,524$1.28M0.0%-29.2%0.705% 11/15/2024 Whitebox Advisors LLC39,146$200K0.0%N/A0.111% 11/15/2024 State Street Corp157,877$807K0.0%-7.3%0.446% 11/15/2024 Point72 Asia Singapore Pte. Ltd.27,690$141K0.0%-64.6%0.078% 11/14/2024 Walleye Capital LLC34,528$176K0.0%-76.9%0.098% 11/13/2024 FMR LLC110,896$567K0.0%+21.3%0.313% 11/12/2024 Charles Schwab Investment Management Inc.1,025,477$5.24M0.0%-39.3%2.900% 10/24/2024 PFG Investments LLC10,250$52K0.0%N/A0.029% 9/16/2024 Point72 DIFC Ltd23,920$55K0.0%N/A0.068% 9/16/2024 Cubist Systematic Strategies LLC101,614$235K0.0%+194.0%0.287% Elon’s Secret Social Security Bombshell (Ad)To All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social Security? What we just discovered in Washington will stun even the most seasoned insiders.A major government announcement coming as soon as tomorrow.9/16/2024 Point72 Asia Singapore Pte. Ltd.78,162$181K0.0%+773.5%0.221% 8/16/2024 Algert Global LLC33,285$77K0.0%N/A0.094% 8/15/2024 Susquehanna Portfolio Strategies LLC94,549$218K0.0%-22.5%0.267% 8/15/2024 AQR Capital Management LLC338,495$782K0.0%-30.1%0.957% 8/15/2024 Point72 Asia Singapore Pte. Ltd.78,162$181K0.0%+773.5%0.221% 8/14/2024 Squarepoint Ops LLC129,500$299K0.0%+97.7%0.366% 8/14/2024 Cubist Systematic Strategies LLC101,614$235K0.0%+194.0%0.287% 8/14/2024 Point72 DIFC Ltd23,920$55K0.0%N/A0.068% 8/14/2024 Marshall Wace LLP197,020$455K0.0%N/A0.557% 8/12/2024 XTX Topco Ltd74,082$171K0.0%+31.6%0.210% (Data available from 1/1/2016 forward) TSE Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of TSE shares? During the previous two years, 111 institutional investors and hedge funds held shares of Trinseo. The most heavily invested institutionals were M&G Plc ($30.50M), Hotchkis & Wiley Capital Management LLC ($13.62M), Fuller & Thaler Asset Management Inc. ($12.81M), CastleKnight Management LP ($12.65M), Owl Creek Asset Management L.P. ($5.21M), Vanguard Group Inc. ($4.22M), and Brightline Capital Management LLC ($3.74M).Learn more on Trinseo's institutional investors. What percentage of Trinseo's stock is owned by institutional investors? 82.69% of Trinseo's stock is owned by institutional investors. Learn more on TSE's institutional investor holdings. Which institutional investors have been buying Trinseo's stock? Of the 88 institutional investors that purchased Trinseo's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: M&G Plc ($7.63M), CastleKnight Management LP ($1.39M), Owl Creek Asset Management L.P. ($1.29M), Brightline Capital Management LLC ($1.02M), Icon Advisers Inc. Co. ($750K), Charles Schwab Investment Management Inc. ($643.36K), and Hotchkis & Wiley Capital Management LLC ($507.20K). How much institutional buying is happening at Trinseo? Institutional investors have bought a total of 6,989,508 shares in the last 24 months. This purchase volume represents approximately $29.16M in transactions. Which of Trinseo's major shareholders have been selling company stock? Of the 23 institutional investors that sold Trinseo's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Charles Schwab Investment Management Inc. ($1.33M), Marshall Wace LLP ($671.17K), Alta Fundamental Advisers LLC ($339.58K), Barclays PLC ($287.30K), D. E. Shaw & Co. Inc. ($281.07K), Millennium Management LLC ($278.93K), and JPMorgan Chase & Co. ($226.24K). How much institutional selling is happening at Trinseo? Institutional investors have sold a total of 4,098,367 shares in the last 24 months. This volume of shares sold represents approximately $18.54M in transactions. 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