Horizon Quantum Holdings Ltd. (HQ)
Nasdaq: HQ · Services-Computer Programming Services · filing with the SEC since 2025
Who owns Horizon Quantum Holdings Ltd.
As filed with the SECHolders of 5% or more
5
Joseph Francis Fitzsimons holds 38.3% of Class A Ordinary Shares, as its SCHEDULE 13D filed Mar 31, 2026 says.
Directors and officers
9
report now, of 9 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Joseph Francis Fitzsimons
SCHEDULE 13D · filed Mar 31, 2026 · Class A Ordinary Shares
Peak XV Partners Seed Investment
SCHEDULE 13D · filed Jul 9, 2026 · Class A Ordinary Shares, no par value
IonQ, Inc.
SCHEDULE 13D · filed Apr 1, 2026 · Class A Ordinary Shares
Harry L. You
SCHEDULE 13D · filed Mar 20, 2026 · Class A Ordinary Shares
Tencent Holdings Ltd
SCHEDULE 13G/A · filed Aug 14, 2026 · Class A Ordinary Shares · 13.1% in Mar 25, 2026
ICS Opportunities, Ltd.
SCHEDULE 13G · filed Jun 25, 2026 · Class A Ordinary Shares, no par value · reported falling below 5%
What HQ reports owning in othersstakes of 5% or more, and other ties
3 subsidiaries in 3 countries, from the list filed with the 20-F filed Apr 14, 2026.
Insider tradesForm 4
0sales
1purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$1.0Mbought, in dollars
Open-market trades on Form 4 from Nov 5, 2025 to Nov 5, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 5, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window1 of 9 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Lambert Danielle | director | 0 | $0 | 0 | 1 | $1.0M |