Hudson Technologies
HDSN
160 hedge funds and large institutions have $194M invested in Hudson Technologies in 2026 Q1 according to their latest regulatory filings, with 26 funds opening new positions, 47 increasing their positions, 58 reducing their positions, and 29 closing their positions.
9,100% more call options, than puts
Call options by funds: $92K | Put options by funds: $1K
0.84% more ownership
Funds ownership: 76.69% → 77.53% (+0.84%)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
5% less funds holding
Funds holding: 168 → 160 (-8)
10% less first-time investments, than exits
New positions opened: 26 | Existing positions closed: 29
14% less capital invested
Capital invested by funds: $226M → $194M (-$32.8M)
19% less repeat investments, than reductions
Existing positions increased: 47 | Existing positions reduced: 58
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WCM
Westerly Capital Management
San Francisco,
California
|
+$4.29M |
| 2 |
SBH
Segall Bryant & Hamill
Chicago,
Illinois
|
+$3.07M |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$2.28M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$1.42M |
| 5 |
EF
Empowered Funds
Havertown,
Pennsylvania
|
+$1.33M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Los Angeles Capital Management
Los Angeles,
California
|
-$2.03M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$1.69M |
| 3 |
Morgan Stanley
New York
|
-$1.6M |
| 4 |
D.E. Shaw & Co
New York
|
-$1.54M |
| 5 |
Acadian Asset Management
Boston,
Massachusetts
|
-$1.51M |
HDSN Hedge Fund Activity: Q1 2026 in Review
160 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Hudson Technologies (HDSN) for Q1 2026, worth a combined $194M — down 14% from $226M a quarter earlier.
Sellers outnumbered buyers: 29 funds closed out of HDSN and 26 opened new positions — a net loss of 3 holders — while 58 trimmed existing stakes and 47 added.
The largest buyer was Westerly Capital Management, adding an estimated $4.29M. The largest seller was Los Angeles Capital Management, exiting entirely with an estimated $2.03M sold.
- 160 institutional investors held Hudson Technologies (HDSN) as of Q1 2026, down from 168 in Q4 2025.
- Funds reported $194M of Hudson Technologies stock for Q1 2026, down 14% quarter-over-quarter.
- 26 funds opened new Hudson Technologies positions in Q1 2026 and 29 closed out, a net change of -3 holders.
- The largest Hudson Technologies buyer in Q1 2026 was Westerly Capital Management, an estimated $4.29M added.
- The largest Hudson Technologies seller in Q1 2026 was Los Angeles Capital Management, an estimated $2.03M sold.
Based on aggregated 13F filings for Q1 2026.