ClearSign Technologies
CLIR
37 hedge funds and large institutions have $2.48M invested in ClearSign Technologies in 2025 Q4 according to their latest regulatory filings, with 4 funds opening new positions, 9 increasing their positions, 7 reducing their positions, and 5 closing their positions.
563% more call options, than puts
Call options by funds: $53K | Put options by funds: $8K
29% more repeat investments, than reductions
Existing positions increased: 9 | Existing positions reduced: 7
0.03% more ownership
Funds ownership: 0.81% → 0.84% (+0.03%)
5% less funds holding
Funds holding: 39 → 37 (-2)
20% less first-time investments, than exits
New positions opened: 4 | Existing positions closed: 5
24% less capital invested
Capital invested by funds: $3.27M → $2.48M (-$787K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Rockefeller Capital Management
New York
|
+$57.5K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$43.7K |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
+$36.1K |
| 4 |
Renaissance Technologies
New York
|
+$29.3K |
| 5 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$23.1K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$20.6K |
| 2 |
Creative Planning
Overland Park,
Kansas
|
-$18.3K |
| 3 |
DPI
Diversified Portfolios Inc
Bloomfield Hills,
Michigan
|
-$15.4K |
| 4 |
Goldman Sachs
New York
|
-$8.52K |
| 5 |
HF
HRT Financial
New York
|
-$2.69K |
CLIR Hedge Fund Activity: Q4 2025 in Review
37 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in ClearSign Technologies (CLIR) for Q4 2025, worth a combined $2.48M — down 24% from $3.27M a quarter earlier.
Sellers outnumbered buyers: 5 funds closed out of CLIR and 4 opened new positions — a net loss of 1 holder — while 7 trimmed existing stakes and 9 added.
The largest buyer was Rockefeller Capital Management, adding an estimated $57.5K. The largest seller was Citadel Advisors, exiting entirely with an estimated $20.6K sold.
- 37 institutional investors held ClearSign Technologies (CLIR) as of Q4 2025, down from 39 in Q3 2025.
- Funds reported $2.48M of ClearSign Technologies stock for Q4 2025, down 24% quarter-over-quarter.
- 4 funds opened new ClearSign Technologies positions in Q4 2025 and 5 closed out, a net change of -1 holder.
- The largest ClearSign Technologies buyer in Q4 2025 was Rockefeller Capital Management, an estimated $57.5K added.
- The largest ClearSign Technologies seller in Q4 2025 was Citadel Advisors, an estimated $20.6K sold.
Based on aggregated 13F filings for Q4 2025.