Trinseo
TSE was delisted on the 27th of February, 2026.
85 hedge funds and large institutions have $95.2M invested in Trinseo in 2025 Q1 according to their latest regulatory filings, with 9 funds opening new positions, 35 increasing their positions, 23 reducing their positions, and 19 closing their positions.
761% more call options, than puts
Call options by funds: $241K | Put options by funds: $28K
52% more repeat investments, than reductions
Existing positions increased: 35 | Existing positions reduced: 23
0.52% more ownership
Funds ownership: 70.52% → 71.04% (+0.52%)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
11% less funds holding
Funds holding: 95 → 85 (-10)
25% less capital invested
Capital invested by funds: $127M → $95.2M (-$31.4M)
53% less first-time investments, than exits
New positions opened: 9 | Existing positions closed: 19
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CM
CastleKnight Management
New York
|
+$1.3M |
| 2 |
Marshall Wace
London,
United Kingdom
|
+$1.11M |
| 3 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.09M |
| 4 |
JP Morgan Chase
New York
|
+$730K |
| 5 |
Goldman Sachs
New York
|
+$470K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AFA
Alta Fundamental Advisers
New York
|
-$1.53M |
| 2 |
D.E. Shaw & Co
New York
|
-$892K |
| 3 |
Charles Schwab
San Francisco,
California
|
-$747K |
| 4 |
6CM
683 Capital Management
New York
|
-$636K |
| 5 |
PA
PharVision Advisers
Boca Raton,
Florida
|
-$298K |
TSE Hedge Fund Activity: Q1 2025 in Review
85 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Trinseo (TSE) for Q1 2025, worth a combined $95.2M — down 25% from $127M a quarter earlier.
Sellers outnumbered buyers: 19 funds closed out of TSE and 9 opened new positions — a net loss of 10 holders — while 23 trimmed existing stakes and 35 added.
The largest buyer was CastleKnight Management, adding an estimated $1.3M. The largest seller was Alta Fundamental Advisers, cutting an estimated $1.53M.
- 85 institutional investors held Trinseo (TSE) as of Q1 2025, down from 95 in Q4 2024.
- Funds reported $95.2M of Trinseo stock for Q1 2025, down 25% quarter-over-quarter.
- 9 funds opened new Trinseo positions in Q1 2025 and 19 closed out, a net change of -10 holders.
- The largest Trinseo buyer in Q1 2025 was CastleKnight Management, an estimated $1.3M added.
- The largest Trinseo seller in Q1 2025 was Alta Fundamental Advisers, an estimated $1.53M sold.
Based on aggregated 13F filings for Q1 2025.