Segra Capital Management, LLC
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 12, 2026), Segra Capital Management, LLC reported 7 stock positions worth $435.0 million. Its top holding was X-Energy (XE) at 61.1% of the portfolio, followed by Vistra (VST, 10.8%) and Amentum (AMTM, 9.7%). Compared with Q1 2026, it opened 3 new positions, sold out of 2 and added to 4. The biggest buy was a new position in X-Energy (XE) and the biggest sale an exit from GE Vernova (GEV).
- Most Recent 13F
- Q2 2026
- Location
- PALM BEACH, FL
- CIK
- 0001607512
- Portfolio Value
- $435.0M (Q2 2026)
- SEC Filing
- 0001607512-26-000007 ↗ filed Aug 12, 2026
Holdings Value
Holdings 7 stocks · $435.0M
| XE X-Energy Inc. | 61.09% | 14,475,734 | $265.8M | New |
| VST Vistra Corp. | 10.79% | 295,956 | $46.9M | Add +79.4% |
| AMTM Amentum Holdings Inc. | 9.68% | 2,037,890 | $42.1M | Add +26.4% |
| CEG Constellation Energy | 7.31% | 128,040 | $31.8M | Add +4.1% |
| NRG NRG Energy Inc. | 4.36% | 130,000 | $19.0M | New |
| FLS Flowserve Corp. | 3.79% | 222,600 | $16.5M | New |
| NKLR Terra Innovatum Global NV | 2.96% | 2,617,152 | $12.9M | Add +3.3% |
Options reported separately and not counted above: DUK puts ($31.6M), CEG calls ($24.8M), AMTM calls ($4.1M).
Portfolio Sells Q1 2026 → Q2 2026
Portfolio Buys Q1 2026 → Q2 2026
Options Activity Q1 2026 → Q2 2026
| DUK Duke Energy Corp. | put | New | 250,000 | $31.6M |
| VST Vistra Corp. | call | Sold out | 200,000 | $30.1Mbefore exit |
| CEG Constellation Energy | call | Reduce -23.1% | 100,000 | $24.8M |
| NXE Nexgen Energy Ltd. | put | Sold out | 2,000,000 | $23.2Mbefore exit |
| GEV GE Vernova Inc. | put | Sold out | 25,000 | $21.8Mbefore exit |
| FRMI Fermi Inc. | call | Sold out | 500,000 | $2.9Mbefore exit |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 7 | $435.0M | XE, VST, AMTM, CEG, NRG |
| Q1 2026 | 6 | $128.4M | AMTM, CEG, VST, GEV, NKLR |
| Q4 2025 | 5 | $46.8M | NKLR, AMTM, VST, NXE, URG |
| Q3 2025 | 4 | $86.5M | URG, NXE, AMTM, VST |
| Q2 2025 | 8 | $310.0M | NXE, DNN, CCJ, BWXT, URG |
| Q1 2025 | 9 | $204.1M | NXE, DNN, BWXT, URG, UEC |
| Q4 2024 | 7 | $194.5M | NXE, DNN, URG, CCJ, BWXT |
| Q3 2024 | 8 | $256.4M | NXE, CCJ, DNN, URG, UEC |
| Q2 2024 | 4 | $109.1M | NXE, URG, DNN, BWXT |
| Q1 2024 | 4 | $130.8M | NXE, DNN, URG, CCJ |