Quantum Computing Inc
Ownership
Ownership Structure
Who owns Quantum Computing Inc (QUBT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 88.6% of the shares are freely tradable; institutional investors hold 42.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 7.13 | 16,139,212 | -3.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.87 | 8,762,295 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 2.96 | 6,710,124 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.08 | 4,700,305 | +3.0 | 03/31/2026 |
| State Street Corp | 2.00 | 4,516,820 | +4.0 | 03/31/2026 |
| Defiance ETFs, LLC | 1.99 | 4,495,083 | +41.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Defiance Quantum ETF | 3.05 | 6,905,789 | +0.1 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.85 | 6,460,261 | +0.2 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.31 | 5,218,343 | -0.6 | 08/31/2026 |
| Vanguard Information Technology ETF | 2.24 | 5,078,719 | +0.4 | 07/31/2026 |
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 |
|---|---|---|---|---|---|
| Huang Yuping | CEO and President | 21,531,173 | 180,861,853 $ | Aug 20, 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 |
|---|---|---|---|---|---|---|
| Aug 20, 2026 | Huang Yuping | CEO and President | Other | 584,897 | 8.95 | 5,234,828 |
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: September 17, 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.