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Standard Nuclear STDN

US equityMarket cap rank #2765
$13.01 +$0.49 (+3.91%)
Pre-market · Oct 6, 5:40 am ET · After hours $13.02 +0.08%
Open$12.54
Prev close$12.52
Day range$12.49 – $13.08
Volume263.7K
Market cap$2.04B
P/E (TTM)–
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership48.2%+48.17 pts vs. prior quarter
Institutions holding7+7 vs. prior quarter
Insider trades (recent)16 buys / 3 sellsNet buying
Short interest1.65% of floatDays to cover 2.9 · as of 15 Sep 2026
Short-sale volume share26.9%5-day average of daily volume

Short-sale volume as % of daily volume

18%24%30%37%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$1.68M (6 inflow days, 14 outflow days).

The five largest holders on file together own 56.6% of shares outstanding.

Largest holders

  • Decisive Point Group16.98%
  • Welara Asset Management, LLC12.93%
  • Fundomo12.70%
  • Edward Hendrix7.40%
  • Andrew Price6.63%
  • Washington Harbour Partners LP5.47%
  • Amir Terrani2.19%
  • Rose Marrocco1.92%

By investor type

  • VC/PE Fund29.68%
  • Individual/Insider18.76%
  • Mutual Fund13.02%
  • Hedge Fund5.47%

Reported short interest has risen from 1.09% to 1.65% of float over the last 4 biweekly reports (31 Jul 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 2,582,085 1.6% 2.9
31 Aug 2026 2,289,328 1.5% 3.2
14 Aug 2026 2,263,585 1.4% 2.5
31 Jul 2026 1,747,311 1.1% 1.0

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