13 institutions reported holding $740 of TRINSEO S A SHS (TSE) in SEC 13F filings for 2026-06-30. Largest institutional holders: GAMMA Investing LLC ($660), Kohmann Bosshard Financial Services, LLC ($71), EverSource Wealth Advisors, LLC ($9), RHUMBLINE ADVISERS ($0), SIMPLEX TRADING, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $660 | 412,655 | Added |
| 2 | Kohmann Bosshard Financial Services, LLC | $71 | 44,605 | Hold |
| 3 | EverSource Wealth Advisors, LLC | $9 | 5,375 | Trimmed |
| 4 | RHUMBLINE ADVISERS | $0 | 0 | Exited |
| 5 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 6 | IFP Advisors, Inc | $0 | 0 | Exited |
| 7 | Nuveen, LLC | $0 | 0 | Exited |
| 8 | SWAN Capital LLC | $0 | 0 | Exited |
| 9 | Essential Partners LLC | $0 | 30 | Trimmed |
| 10 | ROTHSCHILD INVESTMENT LLC | $0 | 7 | Hold |
| 11 | BARCLAYS PLC | $0 | 0 | Exited |
| 12 | Rockefeller Capital Management L.P. | $0 | 0 | Exited |
| 13 | Farther Finance Advisors, LLC | $0 | 15 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30