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Horizon Quantum

Builds Triple Alpha software for hardware-agnostic quantum programs.

$15.11
After-hours close−0.17 (−1.10%)
At close$15.28(−7.24%)

Breakdown13F · Form 4

Institutions 35.87%19.36M sharesInsiders 38.99%21.04M sharesOther 25.14%13.57M shares

Shares outstanding 53.97M · Float 5.85M · 10.8% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Joseph Francis Fitzsimons · director, 10 percent owner, officer: Chief Executive Officer19.74M36.58%Form 4Mar 24, 2026
Peak XV Partners Seed Investment6.47M20.30%13DJul 9, 2026
Sequoia Capital India Operations Ii, LLC6.35M11.77%13FAug 14, 2026
Defiance Etfs, LLC5.58M10.34%13FAug 14, 2026
Penserra Capital Management LLC5.47M10.13%13FAug 13, 2026

Institutions13F, as of Jun 30, 2026

34 holders · 19.36M shares · 25 new positions · 30 increased · 1 reduced · 7 closed

HolderShares% outstandingChg q/qFiled
Sequoia Capital India Operations Ii, LLC6.35M11.77%+6.35MnewAug 14, 2026
Defiance Etfs, LLC5.58M10.34%+5.58MnewAug 14, 2026
Penserra Capital Management LLC5.47M10.13%+5.47MnewAug 13, 2026
Data Collective Iv GP, LLC915.2K1.70%0Aug 14, 2026
UBS Group AG246.3K0.46%+175.9KAug 13, 2026
National Philanthropic Trust231.5K0.43%0Aug 14, 2026
Creek Drive Management Group LLC90.0K0.17%+90.0KnewAug 13, 2026
Bank of America Corp /DE/65.7K0.12%+65.7KnewAug 14, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Peak XV Partners Seed Investmentincl. Peak XV Partners Seed Fund I Ltd, Peak XV Partners Principals Seed Fund I Ltd +1 more20.30%6.47M13DJul 9, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Joseph Francis Fitzsimonsdirector, 10 percent owner, officer: Chief Executive Officer19.74M36.58%Mar 24, 2026
Harry L. Youdirector, 10 percent owner: 1.21M2.25%Mar 20, 2026
Danielle Lambertdirector84.6K0.16%Mar 25, 2026

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Mar 19, 2026
Danielle Lambertdirector
Purchase84,60284,602

CongressHouse and Senate disclosures

Not reported.