Horizon Quantum Holdings Ltd.
Ownership
Ownership Structure
Who owns Horizon Quantum Holdings Ltd. (HQ)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 53.3% of the shares are freely tradable; institutional investors hold 26.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Sequoia Capital India Operations II LLC | 11.77 | 6,351,095 | +0.0 | 06/30/2026 |
| Defiance ETFs, LLC | 10.34 | 5,582,526 | +0.0 | 06/30/2026 |
| Penserra Capital Management, LLC | 10.13 | 5,465,313 | +0.0 | 06/30/2026 |
| Data Collective IV GP, LLC | 1.70 | 915,198 | +0.0 | 06/30/2026 |
| UBS Group AG | 0.46 | 246,280 | +250.2 | 06/30/2026 |
| National Philanthropic Trust | 0.43 | 231,520 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Defiance Quantum ETF | 12.22 | 6,596,532 | +0.0 | 10/30/2026 |
| WisdomTree Quantum Computing Fund | 0.42 | 228,618 | +0.0 | 10/30/2026 |
| WisdomTree Quantum Computing ETF USD Acc | 0.33 | 180,349 | +0.1 | 10/30/2026 |
| VanEck Quantum Cmptg ETF A USD Acc | 0.23 | 125,743 | +0.0 | 10/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| You Harry L. | Director | 1,212,698 | 14,552,376 $ | Nov 3, 2026 | direct |
| Fitzsimons Joseph Francis | Chief Executive Officer | 10,883 | 130,596 $ | Sep 12, 2026 | direct |
| Tan Si-Hui | Chief Science Officer | 6,337 | 76,044 $ | Aug 20, 2026 | both |
| Gould Greg | Chief Financial Officer | 2,165 | 25,980 $ | Sep 12, 2026 | direct |
| Fitzsimons Catherine Michele | CL and CO | 1,026 | 12,312 $ | Sep 12, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Nov 3, 2026 | You Harry L. | Director | Other | 1,163,484 | 0.00 | – |
| Sep 12, 2026 | Fitzsimons Catherine Michele | CL and CO | Other | 1,122 | 15.22 | 17,077 |
| Sep 12, 2026 | Fitzsimons Catherine Michele | CL and CO | Other | 2,148 | 0.00 | – |
| Sep 12, 2026 | Gould Greg | Chief Financial Officer | Other | 1,272 | 15.22 | 19,360 |
| Sep 12, 2026 | Gould Greg | Chief Financial Officer | Other | 3,437 | 0.00 | – |
| Sep 12, 2026 | Tan Si-Hui | Chief Science Officer | Other | 2,991 | 15.22 | 45,523 |
| Sep 12, 2026 | Tan Si-Hui | Chief Science Officer | Other | 5,728 | 0.00 | – |
| Sep 12, 2026 | Fitzsimons Joseph Francis | Chief Executive Officer | Other | 3,438 | 15.22 | 52,326 |
| Sep 12, 2026 | Fitzsimons Joseph Francis | Chief Executive Officer | Other | 14,321 | 0.00 | – |
| Aug 20, 2026 | Tan Si-Hui | Chief Science Officer | Other | 3,600 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 12, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.