Nano Nuclear Energy
205 hedge funds and large institutions have $621M invested in Nano Nuclear Energy in 2025 Q4 according to their latest regulatory filings, with 55 funds opening new positions, 89 increasing their positions, 33 reducing their positions, and 53 closing their positions.
170% more repeat investments, than reductions
Existing positions increased: 89 | Existing positions reduced: 33
40% more call options, than puts
Call options by funds: $119M | Put options by funds: $84.6M
12.01% more ownership
Funds ownership: 39.23% → 51.25% (+12%)
4% more first-time investments, than exits
New positions opened: 55 | Existing positions closed: 53
0% more funds holding
Funds holding: 204 → 205 (+1)
1% less capital invested
Capital invested by funds: $630M → $621M (-$8.85M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WAM
Weiss Asset Management
Boston,
Massachusetts
|
+$60.9M |
| 2 |
GCM
Ghisallo Capital Management
Boston,
Massachusetts
|
+$60.9M |
| 3 |
RP
Regal Partners
Sydney, NSW,
Australia
|
+$37.5M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$32.2M |
| 5 |
Bank of America
Charlotte,
North Carolina
|
+$27.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HCM
Heights Capital Management
San Francisco,
California
|
-$14M |
| 2 |
D.E. Shaw & Co
New York
|
-$9.64M |
| 3 |
BNP Paribas Financial Markets
Paris,
France
|
-$4.13M |
| 4 |
VF
Virtu Financial
New York
|
-$3.21M |
| 5 |
MIC
Maxi Investments CY
Limassol,
Cyprus
|
-$1.37M |
NNE Hedge Fund Activity: Q4 2025 in Review
205 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Nano Nuclear Energy (NNE) for Q4 2025, worth a combined $621M — down 1.4% from $630M a quarter earlier.
Buyers outnumbered sellers: 55 funds opened new NNE positions and 53 closed out — a net gain of 2 holders — while 89 added to existing stakes and 33 trimmed.
The largest buyer was Weiss Asset Management, opening a new position worth an estimated $60.9M. The largest seller was Heights Capital Management, exiting entirely with an estimated $14M sold.
- 205 institutional investors held Nano Nuclear Energy (NNE) as of Q4 2025, up from 204 in Q3 2025.
- Funds reported $621M of Nano Nuclear Energy stock for Q4 2025, down 1.4% quarter-over-quarter.
- 55 funds opened new Nano Nuclear Energy positions in Q4 2025 and 53 closed out, a net change of +2 holders.
- The largest Nano Nuclear Energy buyer in Q4 2025 was Weiss Asset Management, an estimated $60.9M added.
- The largest Nano Nuclear Energy seller in Q4 2025 was Heights Capital Management, an estimated $14M sold.
Based on aggregated 13F filings for Q4 2025.