CUSIP: 853678100 | NYSE | 13 institutional holders
5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.
| Holder | Shares | % of Class | Change | Event Date | vs 13F |
|---|---|---|---|---|---|
| 13GDecisive Point Group, LLC with Decisive Point Ventures Fund II GP, LLC, Decisive Point Ventures II Master Fund, L.P., Decisive Point - Standard Nuclear I, LLC, +4 more | 26,588,810 | 17.8% | New 5%+ stake | Jul 16, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 233,980 | $2.8M | 0.0% | Growth | Medium | Oklahoma City, OK | 2026-10-28 | |
| 69,869 | $825.2K | 0.0% | Core | Low | Toronto, Australia | 2026-11-10 | |
| 40,265 | $475.5K | 0.4% | Core | Very Low | New York, NY | 2026-10-15 | |
| 21,400 | $252.7K | 0.1% | ETF | Medium | Overland Park, KS | 2026-10-23 | |
| 11,850 | $140.0K | 0.0% | ETF | Low | Knoxville, TN | 2026-11-03 | |
| 6,754 | $79.8K | 0.0% | ETF | Low | Cleveland, OH | 2026-11-06 | |
| 3,770 | $44.5K | 0.0% | Core | Low | Keene, NH | 2026-10-27 | |
| 1,400 | $16.5K | 0.0% | ETF | High | Greenwood Village, CO | 2026-11-05 | |
| 349 | $4.1K | 0.0% | Core | Low | Leesburg, VA | 2026-10-08 | |
| 250 | $3.0K | 0.0% | Growth | Very Low | Pittsburgh, PA | 2026-11-06 | |
| 200 | $2.4K | 0.0% | ETF | Very Low | Hanover, NH | 2026-10-23 | |
| 115 | $1.4K | 0.0% | Growth | Low | Tokyo, Mexico | 2026-10-22 | |
| 4 | $47 | 0.0% | Core | Medium | Birmingham, AL | 2026-11-04 |