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Quantum Computing QUBT

US equityMarket cap rank #2858Quantum Computing
$7.94 −$0.24 (-2.93%)
Pre-market · Oct 6, 6:00 am ET · After hours $8.00 +0.75%
Open$8.20
Prev close$8.18
Day range$7.83 – $8.23
Volume8.30M
Market cap$1.80B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership47.8%+0.10 pts vs. prior quarter
Institutions holding363+3 vs. prior quarter
Insider trades (recent)24 buys / 23 sellsNet buying
Short interest28.59% of floatDays to cover 11.3 · as of 15 Sep 2026
Short-sale volume share25.8%5-day average of daily volume

Short-sale volume as % of daily volume

18%22%26%29%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$100.9K (9 inflow days, 11 outflow days).

The five largest holders on file together own 29.0% of shares outstanding.

Largest holders

  • Yuping Huang10.45%
  • BlackRock7.83%
  • Vanguard Capital Management, LLC4.48%
  • Defiance ETFs, LLC3.11%
  • Penserra Capital Management LLC3.08%
  • Vanguard Portfolio Management, LLC2.90%
  • Geode Capital Management, LLC2.35%
  • State Street Global Advisors2.17%

By investor type

  • Mutual Fund36.33%
  • Individual/Insider11.20%
  • Public Company4.04%
  • Private Company3.76%
  • Hedge Fund2.00%
  • Sovereign Wealth Fund0.70%
  • Family Office/Trust0.46%
  • Government Pension Fund0.28%

Reported short interest has risen from 28.10% to 28.59% 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 64,702,416 28.6% 11.3
31 Aug 2026 64,718,890 28.6% 8.9
14 Aug 2026 64,090,029 28.3% 7.4
31 Jul 2026 64,301,059 28.5% 7.4
15 Jul 2026 64,678,858 28.7% 6.7
30 Jun 2026 63,377,550 28.1% 3.8

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