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Horizon Quantum Holdings LTD

CUSIP: Y4000A102 | 45 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13D/AHarry L. You
with dMY Squared Sponsor, LLC
2,655,0287.4%−1,442,330Nov 3, 2026No 13F filer matched
13G/ATencent Holdings Ltd3,800,43811.1%

Institutional Holders — Q3 2026

Bank of New York Mellon Corp226,805
0.0% of portfolio›$3.4M
Imc-Chicago, LLC20,756
0.0% of portfolio›$308.4K
US Bancorp \de\17,313
0.0% of portfolio›$257.3K
Wolverine Asset Management LLC7,915
0.0% of portfolio›$117.6K
Simplex Trading, LLC3,193
0.0% of portfolio›$47.4K
FNY Investment Advisers, LLC2,500
0.0% of portfolio›$37
Farther Finance Advisors, LLC284
0.0% of portfolio›$4.2K
StyleTurnoverLocationFiled
Bank of New York Mellon Corp
226,805$3.4M0.0%CoreLowNew York, NY2026-11-05
Imc-Chicago, LLC
20,756$308.4K0.0%GARPVery HighChicago, IL2026-11-05
US Bancorp \de\
17,313$257.3K0.0%IndexLowMinneapolis, MN2026-11-05
Wolverine Asset Management LLC
7,915$117.6K0.0%Deep ValueVery HighChicago, IL2026-11-02
Simplex Trading, LLC
3,193$47.4K0.0%CoreVery HighChicago, IL2026-11-04
FNY Investment Advisers, LLC
2,500$370.0%GrowthVery HighNew York, NY2026-10-16
Farther Finance Advisors, LLC
284$4.2K0.0%IndexLowSan Francisco, CA2026-10-08
New 5%+ stake
Jun 30, 2026
No 13F filer matched
13DJoseph Francis Fitzsimons19,744,58538.3%New 5%+ stakeMar 19, 2026No 13F filer matched
13DPeak XV Partners Seed Investment6,468,99920.3%New 5%+ stakeMar 19, 2026No 13F filer matched
13DIonQ, Inc.4,230,11813.3%New 5%+ stakeMar 19, 2026No 13F filer matched
13DdMY Squared Sponsor, LLC4,048,14411.6%New 5%+ stakeMar 19, 2026No 13F filer matched
13D/AHarry L. You2,655,028
7.4% of class · Nov 3, 2026−1,442,330
with dMY Squared Sponsor, LLC
No 13F filer matched
13G/ATencent Holdings Ltd3,800,438
11.1% of class · Jun 30, 2026New 5%+ stake
No 13F filer matched
13DJoseph Francis Fitzsimons19,744,585
38.3% of class · Mar 19, 2026New 5%+ stake
No 13F filer matched
13DPeak XV Partners Seed Investment6,468,999
20.3% of class · Mar 19, 2026New 5%+ stake
No 13F filer matched
13DIonQ, Inc.4,230,118
13.3% of class · Mar 19, 2026New 5%+ stake
No 13F filer matched
13DdMY Squared Sponsor, LLC4,048,144
11.6% of class · Mar 19, 2026New 5%+ stake
No 13F filer matched