IonQ Ownership | Who Owns IonQ?
IonQ Ownership Summary
IonQ is owned by 54.77% institutional investors, 2.49% insiders, and 42.74% retail investors. Vanguard group is the largest institutional shareholder, holding 11.81% of IONQ shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.86% of its assets in IonQ shares.
IONQ Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | IonQ | 54.77% | 2.49% | 42.74% |
| Sector | Technology Stocks | 35.36% | 13.13% | 51.51% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 34.77M | 11.81% | $1.56B |
| Blackrock funding, inc. /de | 30.08M | 10.21% | $1.35B |
| Blackrock | 14.16M | 6.80% | $99.55M |
| Morgan stanley | 19.57M | 6.64% | $877.96M |
| Geode capital management | 8.07M | 2.74% | $361.62M |
| State street | 6.30M | 2.51% | $387.42M |
| Ubs group | 5.81M | 1.68% | $167.38M |
| Norges bank | 4.45M | 1.51% | $199.75M |
| Marex group | 4.08M | 1.39% | $183.22M |
| Price t rowe associates inc /md/ | 3.25M | 1.29% | $199.71M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Acme | 103.75K | 36.34% | $6.38M |
| Naspers | 1.23M | 11.46% | $75.87M |
| Hamilton lane advisors | 195.00K | 4.02% | $5.62M |
| Invus financial advisors | 500.00K | 3.94% | $3.52M |
| Orion investment | 277.18K | 3.79% | $12.44M |
| Morgens waterfall vintiadis | 78.50K | 3.31% | $4.83M |
| Lansdowne partners (uk) llp | 1.94M | 3.20% | $38.55M |
| Unicom systems | 768.90K | 2.27% | $22.17M |
| American alpha advisors | 50.00K | 2.13% | $3.08M |
| Quantitative investment management | 197.70K | 1.69% | $12.16M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 30.08M | 0.02% | 7.60M |
| Vanguard group | 34.77M | 0.02% | 5.42M |
| Norges bank | 4.45M | 0.02% | 4.45M |
| Marex group | 4.08M | 1.15% | 3.28M |
| Vanguard fiduciary trust | 2.38M | 0.02% | 2.38M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Morgan stanley | 19.57M | 0.05% | -6.77M |
| Renaissance | - | - | -5.08M |
| Healthcare of ontario pension plan trust fund | - | - | -4.44M |
| Cerberus capital management | 127.20K | 0.28% | -2.31M |
| Softbank group | - | - | -1.59M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 4.45M | 0.02% | 4.45M | $199.75M |
| Vanguard fiduciary trust | 2.38M | 0.02% | 2.38M | $68.62M |
| Naspers | 1.23M | 11.46% | 1.23M | $75.87M |
| Clear street group | 999.80K | 0.21% | 999.80K | $61.49M |
| Unicom systems | 768.90K | 2.27% | 768.90K | $22.17M |
Sold Out
| Holder | Change |
|---|---|
| Bay harbor wealth management | -1.00 |
| Commonwealth retirement investments | -1.00 |
| Tortoise investment management | -1.00 |
| Signature resources capital management | -1.00 |
| Pinpoint asset management (singapore) pte. | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 553 | -17.59% | 161,305,666 | -4.81% | 54 | 1.20% | 363 | -21.94% | 107 | 9.18% |
| Sep 30, 2025 | 644 | 24.08% | 169,091,750 | 60.30% | 67 | 3.81% | 448 | 29.86% | 94 | 20.51% |
| Jun 30, 2025 | 518 | 28.22% | 131,684,904 | 33.38% | 52 | 2.82% | 343 | 38.31% | 81 | - |
| Mar 31, 2025 | 5 | -98.82% | 46,785 | -99.95% | - | 0.00% | 3 | -98.95% | - | -100.00% |
| Dec 31, 2024 | 385 | 42.59% | 82,332,992 | 3.11% | 38 | 2.77% | 259 | 85.00% | 68 | 41.67% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 10.49M | 2.86% | 416.56K |
| iShares Russell 2000 ETF | 8.13M | 2.18% | 68.53K |
| Vanguard Small Cap Index | 6.57M | 1.79% | -672.95K |
| YieldMax Ultra Option Income Strat ETF | 4.00M | 1.34% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 3.96M | 1.08% | 98.87K |
| Vanguard Small Cap Growth Index Inv | 3.66M | 1.00% | -359.15K |
| Fidelity Small Cap Index | 3.31M | 0.90% | 35.94K |
| Vanguard Information Technology ETF | 2.88M | 0.78% | -453.71K |
| iShares Russell 2000 Growth ETF | 2.82M | 0.77% | 6.48K |
| Morgan Stanley Growth | 2.68M | 0.73% | -1.28M |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 06, 2026 | Cardillo Robert T. | Executive Chair, IonQ Federal | Sell | $188.27K |
| Apr 16, 2026 | Cardillo Robert T. | Executive Chair, IonQ Federal | Buy | $112.25K |
| Mar 12, 2026 | Raymond John w | Special Advisor | Sell | $93.35K |
| Feb 26, 2026 | Cardillo Robert T. | Executive Chair, IonQ Federal | Sell | $203.68K |
| Feb 27, 2026 | TEUBER WILLIAM J JR | - | Buy | $115.16K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 1 |
| 2026 Q1 | 1 | 3 |
| 2025 Q4 | 1 | 3 |
| 2025 Q3 | - | 14 |
| 2025 Q2 | - | 15 |
IONQ Ownership FAQ
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