IonQ Ownership | Who Owns IonQ?
IonQ Ownership Summary
IonQ is owned by 33.25% institutional investors, 0.75% insiders, and 66.00% 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 2.82% of its assets in IonQ shares.
IONQ Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | IonQ | 33.25% | 0.75% | 66.00% |
| Sector | Technology Stocks | 36.93% | 14.89% | 48.18% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 34.77M | 11.81% | $1.56B |
| Blackrock funding, inc. /de | 29.87M | 8.64% | $861.18M |
| Blackrock | 14.16M | 6.80% | $99.55M |
| Morgan stanley | 21.16M | 6.12% | $610.04M |
| State street | 9.27M | 2.68% | $267.28M |
| Geode capital management | 8.44M | 2.44% | $242.92M |
| Ubs group | 5.81M | 1.68% | $167.38M |
| Norges bank | 4.45M | 1.51% | $199.75M |
| Marex group | 4.01M | 1.16% | $115.49M |
| Goldman sachs group | 3.55M | 1.03% | $102.45M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Dcvc opportunity fund ii gp | 60.23K | 12.52% | $1.74M |
| Naspers | 1.23M | 11.46% | $75.87M |
| Heights capital management | 815.54K | 6.55% | $23.51M |
| Hamilton lane advisors | 195.00K | 4.02% | $5.62M |
| Invus financial advisors | 500.00K | 3.94% | $3.52M |
| Morgens waterfall vintiadis | 78.50K | 3.31% | $4.83M |
| Orion investment | 278.76K | 2.55% | $8.04M |
| Unicom systems | 768.90K | 2.27% | $22.17M |
| Bayesian capital management, lp | 50.60K | 1.78% | $1.46M |
| Quantitative investment management | 197.70K | 1.69% | $12.16M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Vanguard group | 34.77M | 0.02% | 5.42M |
| Norges bank | 4.45M | 0.02% | 4.45M |
| Vanguard fiduciary trust | 2.38M | 0.02% | 2.38M |
| Two sigma investments, lp | 2.34M | 0.05% | 2.17M |
| Blackrock | 14.16M | 0.00% | 1.78M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Healthcare of ontario pension plan trust fund | - | - | -4.44M |
| Price t rowe associates inc /md/ | 1.44M | 0.00% | -2.57M |
| Softbank group | - | - | -1.59M |
| Two sigma advisers, lp | - | - | -1.56M |
| Alliancebernstein | 465.51K | 0.01% | -1.37M |
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 |
| Alyeska investment group | 1.12M | 0.09% | 1.12M | $32.18M |
| Heights capital management | 815.54K | 6.55% | 815.54K | $23.51M |
Sold Out
| Holder | Change |
|---|---|
| Bay harbor wealth management | -1.00 |
| Tortoise investment management | -1.00 |
| Commonwealth retirement investments | -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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 521 | -28.63% | 114,957,093 | -40.62% | 33 | 0.77% | 278 | -40.47% | 132 | -8.33% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 10.52M | 2.82% | 25.93K |
| iShares Russell 2000 ETF | 8.13M | 2.18% | 68.53K |
| Vanguard Small Cap Index | 6.55M | 1.76% | -16.42K |
| YieldMax Ultra Option Income Strat ETF | 4.00M | 1.34% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 4.00M | 1.07% | 39.89K |
| Vanguard Small Cap Growth Index Inv | 3.66M | 0.98% | 2.27K |
| Fidelity Small Cap Index | 3.31M | 0.90% | 35.94K |
| Vanguard Information Technology ETF | 2.89M | 0.78% | 17.66K |
| iShares Russell 2000 Growth ETF | 2.84M | 0.76% | 17.80K |
| Morgan Stanley Growth | 2.58M | 0.69% | -95.07K |
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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