One Nuclear EnergyONEN
13F holders, Q3 2025 (September 30)42holders −4
2new positions
6sold out
1famous investor
$10.21avg. 13F price*
At the end of Q3 2025, 42 institutions reported holding One Nuclear Energy Inc. (ONEN) in their 13F filings, down 4 from Q2 2025. 2 opened new positions and 6 sold out. The largest holders were TENOR CAPITAL MANAGEMENT Co., L.P. ($15.3M), Meteora Capital, LLC ($13.5M) and AQR Arbitrage LLC ($13.2M). One famous investor held it David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- One Nuclear Energy Inc.
- Filed as
- HENNESSY CAP INVT CORP VII (Q3 2025)
- CUSIP
- G4405D107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $3.3M |
| Exits | 6 | $2.2M |
All 13F filers, Q2 2025 → Q3 2025: 1,084,920 shares bought and 956,109 shares sold, net +128,811 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 42 holders
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1.66% | No change | 1,500,000 | $15.3M |
| Meteora Capital, LLC | 1.49% | Reduce -6.3% | 1,314,618 | $13.5M |
| AQR Arbitrage LLC | 0.47% | Reduce -0.2% | 1,286,444 | $13.2M |
| Linden Advisors LP | 1.18% | No change | 1,213,732 | $12.4M |
| Glazer Capital, LLC | 0.44% | Reduce -0.9% | 1,175,100 | $12.0M |
| Fort Baker Capital Management LP | 1.75% | Add +188.9% | 1,008,922 | $10.3M |
| D. E. Shaw & Co. | 0.01% | Add +4.5% | 940,500 | $9.6M |
| Magnetar Financial LLC | 0.05% | No change | 700,000 | $7.2M |
| Berkley W R Corp. | 0.43% | No change | 646,230 | $6.6M |
| Two Sigma Investments, LP | 0.01% | No change | 634,375 | $6.5M |
| Centiva Capital, LP | 0.58% | No change | 600,000 | $6.2M |
| Radcliffe Capital Management, L.P. | 1.18% | Add +0.9% | 568,447 | $5.8M |
| Periscope Capital Inc. | 1.31% | Add +9.9% | 507,043 | $5.2M |
| Polar Asset Management Partners Inc. | 0.15% | No change | 500,000 | $5.1M |
| Wealthspring Capital LLC | 1.20% | Reduce -0.8% | 484,920 | $4.9M |
| Mangrove Partners Im, LLC | 0.38% | No change | 450,000 | $4.6M |
| LMR Partners LLP | 0.09% | No change | 450,000 | $4.6M |
| Goldman Sachs Group Inc. | 0.00% | No change | 444,056 | $4.5M |
| K2 Principal Fund, L.P. | 1.29% | Reduce -22.1% | 352,579 | $3.6M |
| Moore Capital Management, LP | 0.06% | No change | 300,000 | $3.1M |
| Rivernorth Capital Management, LLC | 0.17% | New | 290,000 | $3.0M |
| Mizuho Securities USA LLC | 0.05% | Reduce -32.8% | 259,764 | $2.6M |
| Picton Mahoney Asset Management | 0.03% | No change | 250,000 | $2.5M |
| Toronto Dominion Bank | 0.01% | Reduce -5.2% | 249,003 | $2.5M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | No change | 200,000 | $2.0M |
| Whitebox Advisors LLC | 0.13% | No change | 200,000 | $2.0M |
| Governors Lane LP | 0.28% | No change | 200,000 | $2.0M |
| Gritstone Asset Management LLC | 2.13% | Reduce -1.1% | 197,899 | $2.0M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -55.7% | 166,014 | $1.7M |
| Aristeia Capital, L.L.C. | 0.07% | No change | 125,000 | $1.3M |
| DLD Asset Management, LP | 0.48% | No change | 111,702 | $1.1M |
| Verition Fund Management LLC | 0.01% | Add +16.4% | 102,932 | $1.1M |
| Shaolin Capital Management LLC | 0.19% | Reduce -48.3% | 100,000 | $1.0M |
| Context Capital Management, LLC | 0.21% | No change | 100,000 | $1.0M |
| Heights Capital Management, Inc. | 0.20% | No change | 60,000 | $615K |
| Wolverine Asset Management LLC | 0.04% | Reduce -61.1% | 53,869 | $552K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | No change | 50,000 | $510K |
| Kepos Capital LP | 2.99% | No change | 50,000 | $509K |
| Clear Street Group Inc. | 0.00% | — | 45,419 | $463K |
| Geode Capital Management, LLC | 0.00% | New | 29,309 | $300K |
| Condor Capital Management | 0.01% | Reduce -14.0% | 10,360 | $105K |
| Morgan Stanley | 0.00% | Reduce -98.2% | 1 | $10 |
"% of holder's portfolio" is ONEN's weight in each manager's 13F, not the share of One Nuclear Energy Inc. the manager owns.