BeStock  

Horizon Quantum Holdings HQ

US equityMarket cap rank #3380Software - Infrastructure
$16.15 −$1.11 (-6.43%)
Pre-market · Oct 8, 8:20 am ET · After hours $16.23 +0.50%
Open$17.07
Prev close$17.26
Day range$16.02 – $17.08
Volume75.0K
Market cap$832.99M
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership51.6%+0.44 pts vs. prior quarter
Institutions holding41+1 vs. prior quarter
Short interest2.96% of floatDays to cover 2.6 · as of 15 Sep 2026
Short-sale volume share18.3%5-day average of daily volume

Short-sale volume as % of daily volume

7%16%25%35%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$718.6K (12 inflow days, 8 outflow days).

Net flow by order size, last 20 sessions

+$221.2KSuper+$497.5KBig+$592.2KMid+$600.8KSmall

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 76.7% of shares outstanding.

Largest holders

  • Joe Fitzsimons36.58%
  • Peak XV Partners Operations LLC11.77%
  • Defiance ETFs, LLC10.34%
  • Penserra Capital Management LLC10.13%
  • IonQ, Inc.7.84%
  • Tencent Holdings Limited7.74%
  • Harry You2.25%
  • DCVC1.70%

By investor type

  • Individual/Insider38.83%
  • Mutual Fund21.74%
  • Public Company15.84%
  • VC/PE Fund13.46%
  • Hedge Fund0.44%
  • Private Company0.14%
  • Family Office/Trust0.00%

Reported short interest has risen from 1.58% to 2.96% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

HolderTypePeriodShare changeNew stake
GWL Investment Management Ltd. Mutual Fund 2026/Q3 +174,240 0.3%
Vident Asset Management Mutual Fund 2026/Q3 +53,021 0.1%
Defiance ETFs, LLC Mutual Fund 2026/Q3 +5,582,526 10.3%
Penserra Capital Management LLC Mutual Fund 2026/Q3 +5,465,313 10.1%
UBS Asset Management Mutual Fund 2026/Q3 +175,946 0.5%
Creek Drive Management Group LLC Hedge Fund 2026/Q3 +90,000 0.2%
Bank of America Corporation Public Company 2026/Q3 +65,726 0.1%
The Goldman Sachs Group, Inc. Public Company 2026/Q3 +64,898 0.1%
Van Eck Associates Corporation Mutual Fund 2026/Q3 +44,038 0.1%
Corgi Strategies, LLC Mutual Fund 2026/Q3 +41,520 0.1%
Northern Trust Global Investments Mutual Fund 2026/Q3 +37,940 0.1%
K2 & Associates Investment Management Inc. Hedge Fund 2026/Q3 +34,000 0.1%
Hudson River Trading LLC Private Company 2026/Q3 +32,690 0.1%
ExodusPoint Capital Management, LP Hedge Fund 2026/Q3 +18,905 0.0%
Jane Street Group, LLC Private Company 2026/Q3 +18,091 0.0%

Institutional buy/sell activity by reporting period, largest moves first.

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 1,526,614 3.0% 2.6
31 Aug 2026 1,130,133 2.2% 3.6
14 Aug 2026 1,064,856 2.1% 4.4
31 Jul 2026 1,101,247 2.1% 3.3
15 Jul 2026 815,860 1.6% 1.6
30 Jun 2026 815,505 1.6% 1.0

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