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Nanobiotix NBTX

US equityMarket cap rank #3081
$25.10 −$0.65 (-2.52%)
Pre-market · Oct 6, 7:50 am ET · After hours $25.10 0.00%
Open$25.77
Prev close$25.75
Day range$24.24 – $25.97
Volume194.2K
Market cap$1.28B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership41.9%-1.90 pts vs. prior quarter
Institutions holding60-1 vs. prior quarter
Short interest0.35% of floatDays to cover 1.4 · as of 15 Sep 2026
Short-sale volume share8.5%5-day average of daily volume

Short-sale volume as % of daily volume

5%9%12%16%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$914.2K (5 inflow days, 15 outflow days).

The five largest holders on file together own 34.7% of shares outstanding.

Largest holders

  • Johnson & Johnson Innovation - JJDC, Inc.11.07%
  • Artal Group S.A.8.82%
  • Qatar Holding LLC6.95%
  • Capital Research4.03%
  • NS Partners Europe S.A.3.85%
  • The Goldman Sachs Group, Inc.2.86%
  • Laurent Levy2.74%
  • BlackRock1.22%

By investor type

  • VC/PE Fund26.84%
  • Mutual Fund11.87%
  • Individual/Insider3.97%
  • Public Company2.97%
  • Private Company0.23%
  • Hedge Fund0.03%

Reported short interest has risen from 0.10% to 0.35% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 175,987 0.3% 1.4
31 Aug 2026 149,217 0.3% 1.0
14 Aug 2026 133,287 0.3% 1.0
31 Jul 2026 99,409 0.2% 1.0
15 Jul 2026 84,555 0.2% 1.0
30 Jun 2026 52,503 0.1% 1.0

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