Trinseo
TSE was delisted on the 27th of February, 2026.
75 hedge funds and large institutions have $60.4M invested in Trinseo in 2025 Q3 according to their latest regulatory filings, with 15 funds opening new positions, 22 increasing their positions, 17 reducing their positions, and 20 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
29% more repeat investments, than reductions
Existing positions increased: 22 | Existing positions reduced: 17
2.97% less ownership
Funds ownership: 77.64% → 74.68% (-3%)
6% less funds holding
Funds holding: 80 → 75 (-5)
25% less first-time investments, than exits
New positions opened: 15 | Existing positions closed: 20
29% less capital invested
Capital invested by funds: $85.4M → $60.4M (-$25M)
68% less call options, than puts
Call options by funds: $18K | Put options by funds: $57K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Charles Schwab
San Francisco,
California
|
+$1.41M |
| 2 |
IA
Icon Advisers
Greenwood Village,
Colorado
|
+$650K |
| 3 |
AFA
Alta Fundamental Advisers
New York
|
+$398K |
| 4 |
BlackRock
New York
|
+$298K |
| 5 |
VCM
Voleon Capital Management
Berkeley,
California
|
+$213K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
-$879K |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
-$835K |
| 3 |
CM
CastleKnight Management
New York
|
-$779K |
| 4 |
Acadian Asset Management
Boston,
Massachusetts
|
-$752K |
| 5 |
Marshall Wace
London,
United Kingdom
|
-$594K |
TSE Hedge Fund Activity: Q3 2025 in Review
75 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in Trinseo (TSE) for Q3 2025, worth a combined $60.4M — down 29% from $85.4M a quarter earlier.
Sellers outnumbered buyers: 20 funds closed out of TSE and 15 opened new positions — a net loss of 5 holders — while 17 trimmed existing stakes and 22 added.
The largest buyer was Charles Schwab, adding an estimated $1.41M. The largest seller was JP Morgan Chase, cutting an estimated $879K.
- 75 institutional investors held Trinseo (TSE) as of Q3 2025, down from 80 in Q2 2025.
- Funds reported $60.4M of Trinseo stock for Q3 2025, down 29% quarter-over-quarter.
- 15 funds opened new Trinseo positions in Q3 2025 and 20 closed out, a net change of -5 holders.
- The largest Trinseo buyer in Q3 2025 was Charles Schwab, an estimated $1.41M added.
- The largest Trinseo seller in Q3 2025 was JP Morgan Chase, an estimated $879K sold.
Based on aggregated 13F filings for Q3 2025.