# TRINSEO PLC (TSE)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/TSE/

- Reporting holders: 1
- Reported value: $5.4K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $5.4K | 412,655 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 1 | $5.4K |
| Q2 2026 | 6 | $740 |
| Q1 2026 | 15 | $11.6K |
| Q4 2025 | 73 | $12.3M |
| Q3 2025 | 77 | $60.6M |
| Q2 2025 | 80 | $86.3M |
| Q1 2025 | 85 | $95.6M |
| Q4 2024 | 95 | $127.1M |
| Q3 2024 | 72 | $119.0M |
| Q2 2024 | 98 | $57.1M |
| Q1 2024 | 107 | $110.8M |
| Q4 2023 | 129 | $249.3M |