Trinseo Ownership | Who Owns Trinseo?


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Trinseo Ownership Summary


Trinseo is owned by 77.44% institutional investors, 5.66% insiders, and 16.91% retail investors. M&g is the largest institutional shareholder, holding 21.42% of TSE shares. M&G Global Dividend GBP I Acc is the top mutual fund, with 8.24% of its assets in Trinseo shares.

TSE Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockTrinseo77.44%5.66%16.91%
SectorBasic Materials Stocks 52.81%12.20%34.99%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
M&g7.63M21.42%$22.88M
Nut tree capital management, lp3.50M9.86%$12.88M
Castleknight management lp2.77M7.77%$8.63M
Blackrock funding, inc. /de2.26M6.33%$7.04M
Owl creek asset management1.67M4.69%$5.21M
Brightline capital management1.02M2.87%$3.19M
Icon advisers inc/co750.00K2.11%$2.34M
Lakewood capital management, lp281.28K0.79%$877.59K
Millennium management272.51K0.77%$1.00M
Acadian asset management241.98K0.68%$752.00K

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Nut tree capital management, lp3.50M4.20%$12.88M
Brightline capital management1.02M1.37%$3.19M
Icon advisers inc/co750.00K0.53%$2.34M
Castleknight management lp2.77M0.24%$8.63M
Owl creek asset management1.67M0.23%$5.21M
M&g7.63M0.13%$22.88M
Lakewood capital management, lp281.28K0.07%$877.59K
Jb capital partners lp27.00K0.02%$83.97K
Red door wealth management15.00K0.01%$46.80K
Susquehanna fundamental investments45.91K0.00%$143.23K

Top Buyers

HolderShares% AssetsChange
Blackrock funding, inc. /de2.26M0.00%1.50M
Owl creek asset management1.67M0.23%1.29M
Icon advisers inc/co750.00K0.53%750.00K
Millennium management272.51K0.00%94.26K
Los angeles capital management34.76K0.00%34.76K

Top Sellers

HolderShares% AssetsChange
Marshall wace, llp190.40K0.00%-671.17K
Jane street group---267.75K
683 capital management---124.76K
Thrivent financial for lutherans---116.25K
Qube research---104.78K

New Positions

HolderShares% AssetsChangeValue
Icon advisers inc/co750.00K0.53%750.00K$2.34M
Los angeles capital management34.76K0.00%34.76K$108.45K
Intech investment management15.51K0.00%15.51K$48.40K
Sterling capital management919.00-919.00$2.87K
Raymond james financial718.00-718.00$2.24K

Sold Out

HolderChange
Versant capital management-21.00
Founders capital management-200.00
Larson financial group-245.00
Point72 (difc)-2.52K
Farther finance advisors-6.02K

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 202581-7.95%27,568,0069.38%771.54%42-2.33%21-12.50%
Mar 31, 20254-95.92%4,104,443-83.56%110.23%1-98.25%1-96.15%
Dec 31, 20249832.43%24,972,0999.01%701.69%5767.65%258.70%
Sep 30, 202474-26.00%22,908,998-9.31%641.26%34-29.17%23-36.11%
Jun 30, 2024100-14.53%25,262,033-7.93%711.18%48-5.88%36-21.74%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
M&G Global Dividend GBP I Acc2.97M8.24%-
M&G (Lux) Glb Dividend CI USD Acc2.83M7.87%-
ICON Natural Resources and Infras Instl750.00K2.08%750.00K
Schwab Fundamental U.S. Small CompanyETF701.89K1.97%-
iShares Russell 2000 ETF650.62K1.82%-12.39K
Vanguard Institutional Extnd Mkt Idx Tr370.67K1.03%-168.90K
Invesco FTSE RAFI US 1500 Small-Mid ETF342.35K0.97%-
Fidelity Small Cap Index339.77K0.94%339.77K
Vanguard Strategic Small-Cap Equity Inv313.47K0.88%-16.32K
iShares Russell 2000 Value ETF293.53K0.82%218.00

Recent Insider Transactions


DateNameRoleActivityValue
Aug 12, 2025FARRELL MATTHEW-Buy$57.25K
Aug 14, 2025FARRELL MATTHEW-Buy$118.12K
Aug 13, 2025FARRELL MATTHEW-Buy$64.66K
Mar 14, 2025Frisch Johanna VP AND TREASURERBuy$6.15K
Mar 13, 2025Frisch Johanna VP AND TREASURERBuy$4.42K

Insider Transactions Trends


DateBuySell
2025 Q33-
2025 Q2--
2025 Q13-
2024 Q4--
2024 Q341

TSE Ownership FAQ


Who owns the most shares of Trinseo?

Trinseo’s largest shareholders are M&g (7.63M shares, 21.42%), Nut tree capital management, lp (3.5M shares, 9.86%), and Castleknight management lp (2.77M shares, 7.77%). Together, they hold 39.05% of Trinseo’s total shares outstanding.

Does Blackrock own Trinseo?

BlackRock is not among the top 10 institutional shareholders of Trinseo.

Who is Trinseo’s biggest shareholder by percentage of total assets invested?

Nut tree capital management, lp is Trinseo’s biggest shareholder by percentage of total assets invested, with 4.20% of its assets in 3.5M Trinseo shares, valued at 12.88M$.

Who is the top mutual fund holder of Trinseo shares?

M&G Global Dividend GBP I Acc is the top mutual fund holder of Trinseo shares, with 8.24% of its total shares outstanding invested in 2.97M Trinseo shares.

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