Segra Capital Management, LLC
Segra Capital Management, LLC reported 10 US-listed holdings worth $495.8 million in its 13F for the quarter ended 30 September 2026, filed 6 October 2026. Its largest: X Energy Inc. (44.8%), Vistra Corp. (10.4%) and BWX Technologies, Inc. (9.8%). Against the quarter before, it opened 4 positions, added to 5, trimmed 1 and sold out of 1.
The 10 largest of its 10 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q2 2026.
What the fund reported holding at each quarter's end; hover a bar for the number of positions
What its reported holdings returned
Held through each quarter, the holdings it reported returned -22.3% over the 2 quarters to 30 September 2026, against +17.3% for the S&P 500.
Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.
What it did on the quarter
Its positions against its 13F for the quarter to 30 June 2026; a change under 0.1% of a position counts as held
Opened 4
- BWX Technologies, Inc. BWXT$48.7 million
- Spring Valley Acquisition Corp III GFUZ$46.7 million
- Cameco Corp. CCJ$34.7 million
- Uranium Energy Corp. UEC$5.2 million
Added to 5
- X Energy Inc. XE+1.2 million shares · +8%
- Constellation Energy Corp. CEG+48,119 shares · +38%
- Vistra Corp. VST+77,500 shares · +26%
- NRG Energy, Inc. NRG+59,000 shares · +45%
- Terra Innovatum Global NV NKLR+262,848 shares · +10%
Trimmed 1
- Amentum Holdings, Inc. AMTM-1.3 million shares · -62%
Sold out of 1
- Flowserve Corp. FLS$16.5 million last quarter
What it holds
| Company | Shares | Value | Of its book | Change in shares |
|---|---|---|---|---|
| X Energy Inc. XE | 15.7M | $222.3 million | 44.84% | +1.2M |
| Vistra Corp. VST | 373.5K | $51.7 million | 10.42% | +77.5K |
| BWX Technologies, Inc. BWXT | 355.1K | $48.7 million | 9.81% | new |
| Spring Valley Acquisition Corp III GFUZ | 6.3M | $46.7 million | 9.42% | new |
| Constellation Energy Corp. CEG | 176.2K | $44.7 million | 9.02% | +48.1K |
| Cameco Corp. CCJ | 400.0K | $34.7 million | 6.99% | new |
| NRG Energy, Inc. NRG | 189.0K | $18.1 million | 3.65% | +59.0K |
| Amentum Holdings, Inc. AMTM | 774.9K | $14.0 million | 2.83% | -1.3M |
| Terra Innovatum Global NV NKLR | 2.9M | $9.8 million | 1.97% | +262.8K |
| Uranium Energy Corp. UEC | 550.0K | $5.2 million | 1.05% | new |
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Change is shares against its 13F for the quarter before; the 1 it sold out of are in the box above.Options it reported
| Company | Option | Shares under the options | Value of those shares |
|---|---|---|---|
| Cameco Corp. | Calls | 2.5M | $216.7 million |
| Cameco Corp. | Puts | 1.8M | $156.1 million |
| Global X FDS | Calls | 2.5M | $99.6 million |
| NRG Energy Inc. | Calls | 100.0K | $9.6 million |
| NRG Energy Inc. | Puts | 100.0K | $9.6 million |
5 option lines. A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost; they are not counted in the holdings above.