Trinseo PLC
TSEOQ- Exchange
- OTC
- Industry
- Plastic Materials, Synth Resins & Nonvulcan Elastomers
- SEC CIK
- 0001519061
No open-market purchases or sales by Trinseo PLC insiders were filed in the last 90 days; 6 institutions reported holding it in 13F filings for Q2 2026, worth $740 in total; no superinvestor holds it.
Q4 2025 vs. Q3 2025
How the institutions holding Trinseo PLC changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Of which not filed for Q4 2025 | Q4 2025 | Change |
|---|---|---|---|---|
| Holders | 75 | 2 | 73 | 0 |
| Shares | 26.8M | 21.8K | 21.3M | −5.57M (−20.8%) |
| Value | $60.4M | $51.3K | $12.3M | −$48.1M (−79.6%) |
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (13)
Institutions that held Trinseo PLC at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Gsa Capital Partners LLP | 511,342 | $254.0K | 0.02% |
| HRT Financial LP | 37,379 | $18.0K | 0.00% |
| Jain Global LLC | 19,119 | $9.50K | 0.00% |
| VestGen Advisors, LLC | 18,610 | $9.25K | 0.00% |
| Strategies Wealth Advisors, LLC | 18,023 | $8.96K | 0.00% |
| Ground Swell Capital, LLC | 11,765 | $5.85K | 0.01% |
| Ethic Inc. | 11,547 | $5.74K | 0.00% |
| Ewa, LLC | 10,493 | $5.21K | 0.00% |
| GAMMA Investing LLC | 1,052 | $523 | 0.00% |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 1,000 | $497 | 0.00% |
| Torren Management, LLC | 178 | $88 | 0.00% |
| True Wealth Design, LLC | 11 | $6 | 0.00% |
| Rothschild Investment LLC | 1 | $0 | 0.00% |
Sold out (13)
Institutions that held Trinseo PLC at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Brightline Capital Management, LLC | 1,060,000 | $2.49M |
| D. E. Shaw & Co., Inc. | 147,316 | $346.2K |
| Voleon Capital Management LP | 82,074 | $192.9K |
| Two Sigma Investments, LP | 35,714 | $83.9K |
| JB Capital Partners LP | 27,001 | $63.5K |
| PFG Investments, LLC | 23,004 | $54.1K |
| Susquehanna International Group, LLP | 11,703 | $27.5K |
| SRS Capital Advisors, Inc. | 399 | $938 |
| Nisa Investment Advisors, LLC | 246 | $578 |
| Bare Financial Services, Inc | 209 | $491 |
| MAI Capital Management | 170 | $400 |
| Fifth Third Bancorp | 70 | $165 |
| Sunbelt Securities, Inc. | 3 | $7 |
Not filed for Q4 2025 yet (2)
Institutions that held Trinseo PLC at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Cubist Systematic Strategies, LLC | 20,026 | $47.1K |
| Point72 Asia (Singapore) Pte. Ltd. | 1,793 | $4.21K |