IONQ Inc
Ownership
Ownership Structure
Who owns IONQ Inc (IONQ)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 88.1% of the shares are freely tradable; institutional investors hold 55.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Morgan Stanley - Brokerage Accounts | 6.49 | 26,279,397 | +24.2 | 06/30/2026 |
| BlackRock Inc | 5.16 | 20,896,455 | -30.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.85 | 15,598,546 | +3.5 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 3.45 | 13,959,259 | -9.3 | 06/30/2026 |
| State Street Corp | 2.01 | 8,123,629 | -12.4 | 06/30/2026 |
| UBS Group AG | 1.95 | 7,896,730 | +36.0 | 06/30/2026 |
| Bank of America Corp | 1.60 | 6,473,088 | +258.0 | 06/30/2026 |
| Geode Capital Management, LLC | 1.59 | 6,459,949 | -23.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.48 | 12,622,424 | +4.6 | 09/30/2026 |
| Vanguard Small Cap Index | 2.14 | 7,762,019 | +1.1 | 09/30/2026 |
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 |
|---|---|---|---|---|---|
| de Masi Niccolo | President and CEO | 1,123,426 | 33,702,780 $ | Sep 11, 2026 | direct |
| Singh Inder M | CFO & COO | 408,614 | 12,258,420 $ | Sep 11, 2026 | direct |
| Dacier Paul T | CAO, CLO and Secretary | 100,001 | 3,000,030 $ | Sep 11, 2026 | direct |
| Raymond John w | Director | 77,741 | 2,332,230 $ | Sep 10, 2026 | direct |
| Baxter Timothy E | Director | 13,922 | 417,660 $ | Aug 24, 2026 | direct |
| Ball Eric R. | Director | 5,540 | 166,200 $ | Aug 24, 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 |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | Dacier Paul T | CAO, CLO and Secretary | Other | 4,457 | 37.09 | 165,324 |
| Sep 11, 2026 | Singh Inder M | CFO & COO | Other | 6,272 | 37.09 | 232,649 |
| Sep 11, 2026 | de Masi Niccolo | President and CEO | Other | 16,121 | 37.09 | 597,979 |
| Sep 10, 2026 | Raymond John w | Director | Sell | 2,407 | 37.21 | 89,564 |
| Aug 24, 2026 | Baxter Timothy E | Director | Other | 5,540 | 0.00 | – |
| Aug 24, 2026 | Ball Eric R. | Director | Other | 5,540 | 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 3, 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.