TrinseoTSEOQ
13F holders, Q4 2025 (December 31)72holders −3
12new positions
14sold out
2famous investors
$0.50avg. 13F price*
At the end of Q4 2025, 72 institutions reported holding Trinseo PLC (TSEOQ) in their 13F filings, down 3 from Q3 2025. 12 opened new positions and 14 sold out. The largest holders were M&G PLC ($3.8M), BlackRock, Inc. ($1.2M) and Charles Schwab Investment Management Inc. ($1.0M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Trinseo PLC
- CUSIP
- G9059U107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 12 | $317K |
| Exits | 14 | $11.5M |
All 13F filers, Q3 2025 → Q4 2025: 2,017,853 shares bought and 7,594,028 shares sold, net −5,576,175 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 72 holders
| M&G PLC | 0.02% | No change | 7,625,044 | $3.8M |
| BlackRock, Inc. | 0.00% | Add +1.8% | 2,413,178 | $1.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +38.9% | 2,091,125 | $1.0M |
| Owl Creek Asset Management, L.P. | 0.10% | No change | 1,669,952 | $830K |
| Icon Advisers Inc. | 0.11% | No change | 1,000,000 | $497K |
| Geode Capital Management, LLC | 0.00% | Reduce -0.0% | 841,720 | $418K |
| Vanguard Group Inc. | 0.00% | Add +0.9% | 762,828 | $379K |
| Goldman Sachs Group Inc. | 0.00% | Add +360.8% | 580,623 | $289K |
| Morgan Stanley | 0.00% | Add +18.1% | 536,422 | $267K |
| CastleKnight Management LP | 0.01% | Reduce -79.0% | 516,826 | $257K |
| Gsa Capital Partners LLP | 0.02% | New | 511,342 | $254K |
| State Street Corp. | 0.00% | Add +12.8% | 478,033 | $238K |
| Lakewood Capital Management, LP | 0.01% | No change | 281,279 | $140K |
| Renaissance Technologies | 0.00% | Reduce -12.3% | 276,100 | $137K |
| Northern Trust Corp. | 0.00% | Reduce -8.5% | 245,801 | $122K |
| UBS Group AG | 0.00% | Reduce -7.7% | 184,497 | $92K |
| Alta Fundamental Advisers LLC | 0.04% | No change | 152,974 | $76K |
| Deutsche Bank AG | 0.00% | Add +336.4% | 125,610 | $63K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -16.2% | 98,606 | $49K |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.8% | 80,741 | $40K |
| Invesco Ltd. | 0.00% | Reduce -46.6% | 70,320 | $35K |
| FMR LLC | 0.00% | Add +33.7% | 67,624 | $34K |
| Barclays PLC | 0.00% | Add +11.0% | 53,255 | $26K |
| Kohmann Bosshard Financial Services, LLC | 0.00% | No change | 44,605 | $22K |
| Nuveen, LLC | 0.00% | No change | 44,280 | $22K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 40,483 | $20K |
| Bank of America Corp. | 0.00% | Reduce -89.0% | 39,804 | $20K |
| Mariner, LLC | 0.00% | No change | 39,200 | $19K |
| Wells Fargo & Company | 0.00% | Add +36.0% | 38,474 | $19K |
| HRT Financial LP | 0.00% | New | 37,379 | $18K |
| AQR Capital Management | 0.00% | Add +36.9% | 33,646 | $17K |
| New York State Common Retirement Fund | 0.00% | No change | 29,500 | $15K |
| Rhumbline Advisers | 0.00% | Reduce -33.0% | 21,942 | $11K |
| Jain Global LLC | 0.00% | New | 19,119 | $10K |
| VestGen Advisors, LLC | 0.00% | New | 18,610 | $9K |
| JPMorgan Chase & Co. | 0.00% | Reduce -29.6% | 18,518 | $9K |
| Strategies Wealth Advisors, LLC | 0.00% | New | 18,023 | $9K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +239.5% | 16,406 | $8K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +3.3% | 16,342 | $8K |
| Intech Investment Management LLC | 0.00% | Reduce -5.3% | 15,209 | $8K |
| Red Door Wealth Management, LLC | 0.00% | No change | 15,000 | $7K |
| Ground Swell Capital, LLC | 0.01% | New | 11,765 | $6K |
| Ethic Inc. | 0.00% | New | 11,547 | $6K |
| Ewa, LLC | 0.00% | New | 10,493 | $5K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 8,769 | $4K |
| BNP Paribas Financial Markets | 0.00% | Reduce -64.3% | 8,370 | $4K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -0.1% | 5,085 | $3K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,476 | $2K |
| Legal & General Group Plc | 0.00% | No change | 3,098 | $2K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -78.8% | 2,820 | $1K |
| Sterling Capital Management LLC | 0.00% | No change | 2,349 | $1K |
| California State Teachers Retirement System | 0.00% | Reduce -1.6% | 2,091 | $1K |
| Amalgamated Bank | 0.00% | Reduce -8.0% | 1,070 | $1K |
| Royal Bank of Canada | 0.00% | Reduce -98.9% | 2,460 | $1K |
| Cwm, LLC | 0.00% | Reduce -25.4% | 1,259 | $1K |
| McIlrath & Eck, LLC | 0.00% | No change | 1,444 | $718 |
| GAMMA Investing LLC | 0.00% | New | 1,052 | $523 |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 0.00% | — | 1,000 | $497 |
| Citigroup Inc. | 0.00% | Add +48.4% | 770 | $383 |
| Group One Trading LLC | 0.00% | Reduce -76.5% | 722 | $359 |
| SWAN Capital LLC | 0.00% | No change | 250 | $124 |
| Osaic Holdings, Inc. | 0.00% | Reduce -2.5% | 231 | $115 |
| Stephens Consulting, LLC | 0.00% | No change | 231 | $115 |
| Torren Management, LLC | 0.00% | — | 178 | $88 |
| Rockefeller Capital Management L.P. | 0.00% | No change | 160 | $80 |
| Steward Partners Investment Advisory, LLC | 0.00% | Reduce -91.4% | 86 | $43 |
| Allworth Financial LP | 0.00% | No change | 19 | $10 |
| IFP Advisors, Inc | 0.00% | Reduce -7.1% | 13 | $6 |
| True Wealth Design, LLC | 0.00% | New | 11 | $6 |
| Essential Partners LLC | 0.00% | Add +12.5% | 9 | $4 |
| SBI Securities Co., Ltd. | 0.00% | No change | 4 | $2 |
| Rothschild Investment LLC | 0.00% | New | 1 | $0 |
"% of holder's portfolio" is TSEOQ's weight in each manager's 13F, not the share of Trinseo PLC the manager owns.