Trinseo PLC - TSE

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
M&G Plc History No change 7,625,044 3,789 0.02% 0.08% 1 0 0.0% Q4 2025 Feb 12, 2026
Nut Tree Capital Management, LP History No change 3,500,000 1,739 0.33% 1.9% 2 0 0.0% Q4 2025 Feb 17, 2026
BlackRock, Inc. History Added to 2,413,178 1,199 0.0% 0.0% 3 +43,506 1.84% Q4 2025 Feb 12, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 2,091,125 1,039 0.0% 0.0% 4 +586,057 38.94% Q4 2025 Feb 13, 2026
Owl Creek Asset Management, L.P. History No change 1,669,952 829 0.03% 0.12% 5 0 0.0% Q4 2025 Feb 17, 2026
ICON ADVISERS INC/CO History No change 1,000,000 497 0.11% 0.51% 6 0 0.0% Q4 2025 Feb 13, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 841,720 418 0.0% 0.0% 7 -108 -0.01% Q4 2025 Feb 09, 2026
VANGUARD GROUP INC History Added to 762,828 379 0.0% 0.0% 8 +7,185 0.95% Q4 2025 Jan 29, 2026
GOLDMAN SACHS GROUP INC History Added to 580,623 288 0.0% 0.0% 9 +454,630 360.84% Q4 2025 Mar 25, 2026
MORGAN STANLEY History Added to 536,422 266 0.0% 0.0% 10 +82,135 18.08% Q4 2025 Feb 13, 2026
CastleKnight Management LP History Reduced 516,826 256 0.01% 0.11% 11 -1,950,000 -79.05% Q4 2025 Feb 17, 2026
GSA CAPITAL PARTNERS LLP History New 511,342 254 0.02% 12 +511,342 New Q4 2025 Feb 06, 2026
STATE STREET CORP History Added to 478,033 237 0.0% 0.0% 13 +54,247 12.8% Q4 2025 Feb 13, 2026
LAKEWOOD CAPITAL MANAGEMENT, LP History No change 281,279 139 0.01% 0.05% 14 0 0.0% Q4 2025 Feb 17, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 276,100 137 0.0% 0.0% 15 -38,600 -12.27% Q4 2025 Feb 12, 2026
NORTHERN TRUST CORP History Reduced 245,801 122 0.0% 0.0% 16 -22,888 -8.52% Q4 2025 Feb 17, 2026
UBS Group AG History Reduced 184,497 91 0.0% 0.0% 17 -15,307 -7.66% Q4 2025 Jan 29, 2026
Alta Fundamental Advisers LLC History No change 152,974 76 0.03% 0.15% 18 0 0.0% Q4 2025 Feb 11, 2026
DEUTSCHE BANK AG\ History Added to 125,610 62 0.0% 0.0% 19 +96,825 336.37% Q4 2025 Feb 11, 2026
DIMENSIONAL FUND ADVISORS LP History Reduced 98,606 49 0.0% 0.0% 20 -19,063 -16.2% Q4 2025 Feb 12, 2026
Bank of New York Mellon Corp History Reduced 80,741 40 0.0% 0.0% 21 -661 -0.81% Q4 2025 Feb 10, 2026
Invesco Ltd. History Reduced 70,320 34 0.0% 0.0% 22 -61,482 -46.65% Q4 2025 Feb 19, 2026
FMR LLC History Added to 67,624 33 0.0% 0.0% 23 +17,042 33.69% Q4 2025 Feb 17, 2026
BARCLAYS PLC History Added to 53,255 26 0.0% 0.0% 24 +5,273 10.99% Q4 2025 Feb 13, 2026
Kohmann Bosshard Financial Services, LLC History No change 44,605 22 0.0% 0.01% 25 0 0.0% Q4 2025 Jan 30, 2026
Nuveen, LLC History No change 44,280 22 0.0% 0.0% 26 0 0.0% Q4 2025 Feb 12, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History No change 40,483 20 0.0% 0.0% 27 0 0.0% Q4 2025 Feb 17, 2026
BANK OF AMERICA CORP /DE/ History Reduced 39,804 19 0.0% 0.0% 28 -323,837 -89.05% Q4 2025 Feb 17, 2026
WELLS FARGO & COMPANY/MN History Added to 38,474 19 0.0% 0.0% 29 +10,195 36.05% Q4 2025 Feb 13, 2026
Mariner, LLC History No change 39,200 19 0.0% 0.0% 30 0 0.0% Q4 2025 Feb 13, 2026
HRT FINANCIAL LP History New 37,379 18 0.0% 31 +37,379 New Q4 2025 Feb 12, 2026
AQR CAPITAL MANAGEMENT LLC History Added to 33,646 16 0.0% 0.0% 32 +9,063 36.87% Q4 2025 Feb 17, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 29,500 14 0.0% 0.0% 33 0 0.0% Q4 2025 Feb 12, 2026
RHUMBLINE ADVISERS History Reduced 21,942 10 0.0% 0.0% 34 -10,786 -32.96% Q4 2025 Feb 13, 2026
Jain Global LLC History New 19,119 9 0.0% 36 +19,119 New Q4 2025 Feb 17, 2026
VestGen Advisors, LLC History New 18,610 9 0.0% 37 +18,610 New Q4 2025 Feb 17, 2026
JPMORGAN CHASE & CO History Reduced 18,518 9 0.0% 0.0% 35 -7,805 -29.65% Q4 2025 Feb 11, 2026
Strategies Wealth Advisors, LLC History New 18,023 8 0.0% 40 +18,023 New Q4 2025 Feb 13, 2026
Tower Research Capital LLC (TRC) History Added to 16,406 8 0.0% 0.0% 38 +11,573 239.46% Q4 2025 Feb 17, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 16,342 8 0.0% 0.0% 39 +528 3.34% Q4 2025 Feb 17, 2026
INTECH INVESTMENT MANAGEMENT LLC History Reduced 15,209 7 0.0% 0.0% 41 -845 -5.26% Q4 2025 Feb 10, 2026
Red Door Wealth Management, LLC History No change 15,000 7 0.0% 0.0% 42 0 0.0% Q4 2025 Jan 20, 2026
Ground Swell Capital, LLC History New 11,765 5 0.01% 43 +11,765 New Q4 2025 Feb 04, 2026
Ethic Inc. History New 11,547 5 0.0% 44 +11,547 New Q4 2025 Feb 03, 2026
EWA, LLC History New 10,493 5 0.0% 45 +10,493 New Q4 2025 Feb 03, 2026
BNP PARIBAS FINANCIAL MARKETS History Reduced 8,370 4 0.0% 0.0% 46 -15,084 -64.31% Q4 2025 Feb 10, 2026
Police & Firemen's Retirement System of New Jersey History No change 8,769 4 0.0% 0.0% 47 0 0.0% Q4 2025 Feb 13, 2026
EverSource Wealth Advisors, LLC History Reduced 5,085 2 0.0% 0.0% 48 -5 -0.1% Q4 2025 Feb 06, 2026
Russell Investments Group, Ltd. History Reduced 2,820 1 0.0% 0.0% 56 -10,456 -78.76% Q4 2025 Feb 17, 2026
ROYAL BANK OF CANADA History New 2,460 1 0.0% 51 +2,460 New Q4 2025 Feb 17, 2026
CWM, LLC History Reduced 1,259 1 0.0% 0.0% 55 -429 -25.41% Q4 2025 Jan 26, 2026
AMALGAMATED BANK History Reduced 1,070 1 0.0% 0.0% 50 -93 -8.0% Q4 2025 Feb 05, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 2,091 1 0.0% 0.0% 53 -35 -1.65% Q4 2025 Feb 17, 2026
Legal & General Group Plc History No change 3,098 1 0.0% 0.0% 49 0 0.0% Q4 2025 Feb 09, 2026
Ameritas Investment Partners, Inc. History No change 3,476 1 0.0% 0.0% 52 0 0.0% Q4 2025 Feb 11, 2026
Sterling Capital Management LLC History No change 2,349 1 0.0% 0.0% 54 0 0.0% Q4 2025 Feb 13, 2026
BRIGHTLINE CAPITAL MANAGEMENT, LLC History Closed out 0 0 1.02% -1,060,000 -100.0% Q3 2025 Nov 13, 2025
D. E. Shaw & Co., Inc. History Closed out 0 0 0.0% -147,316 -100.0% Q3 2025 Nov 14, 2025
Voleon Capital Management LP History Closed out 0 0 0.0% -82,074 -100.0% Q3 2025 Nov 14, 2025
TWO SIGMA INVESTMENTS, LP History Closed out 0 0 0.0% -35,714 -100.0% Q3 2025 Nov 14, 2025
JB CAPITAL PARTNERS LP History Closed out 0 0 0.01% -27,001 -100.0% Q3 2025 Nov 14, 2025
PFG Investments, LLC History Closed out 0 0 0.0% -23,004 -100.0% Q3 2025 Oct 31, 2025
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Closed out 0 0 0.0% -11,703 -100.0% Q3 2025 Nov 14, 2025
GROUP ONE TRADING LLC History Reduced 722 0 0.0% -2,353 -76.52% Q4 2025 Feb 12, 2026
GAMMA Investing LLC History New 1,052 0 +1,052 New Q4 2025 Jan 05, 2026
FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. History New 1,000 0 +1,000 New Q4 2025 Feb 09, 2026
Steward Partners Investment Advisory, LLC History Reduced 86 0 0.0% -914 -91.4% Q4 2025 Feb 12, 2026
Arax Advisory Partners History Closed out 0 0 -399 -100.0% Q3 2025 Nov 14, 2025
CITIGROUP INC History Added to 770 0 0.0% +251 48.36% Q4 2025 Feb 13, 2026
NISA INVESTMENT ADVISORS, LLC History Closed out 0 0 -246 -100.0% Q3 2025 Oct 23, 2025
Bare Financial Services, Inc History Closed out 0 0 -209 -100.0% Q3 2025 Nov 12, 2025
Torren Management, LLC History New 178 0 +178 New Q4 2025 Jan 30, 2026
MAI Capital Management History Closed out 0 0 -170 -100.0% Q3 2025 Nov 10, 2025
FIFTH THIRD BANCORP History Closed out 0 0 -70 -100.0% Q3 2025 Nov 07, 2025
Allworth Financial LP History New 19 0 +19 New Q4 2025 Feb 05, 2026
True Wealth Design, LLC History New 11 0 +11 New Q4 2025 Jan 08, 2026
OSAIC HOLDINGS, INC. History Reduced 231 0 -6 -2.53% Q4 2025 Feb 17, 2026
Sunbelt Securities, Inc. History Closed out 0 0 -3 -100.0% Q3 2025 Nov 19, 2025
ROTHSCHILD INVESTMENT LLC History New 1 0 +1 New Q4 2025 Feb 10, 2026
IFP Advisors, Inc History Reduced 13 0 -1 -7.14% Q4 2025 Feb 06, 2026
McIlrath & Eck, LLC History No change 1,444 0 0.0% 0 0.0% Q4 2025 Feb 03, 2026
Rockefeller Capital Management L.P. History No change 160 0 0 0.0% Q4 2025 Mar 16, 2026
SBI Securities Co., Ltd. History No change 4 0 0 0.0% Q4 2025 Feb 03, 2026
SWAN Capital LLC History No change 250 0 0 0.0% Q4 2025 Feb 12, 2026
Stephens Consulting, LLC History No change 231 0 0 0.0% Q4 2025 Jan 13, 2026