VANGUARD GROUP INC
Rank #1
9.27%
- Shares
- 34.77M
- Change
- +5.42M
- Change %
- +18.46%
- Filing
- Dec 31, 2025
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · TECHNOLOGY · Holders
IONQ Inc (IONQ) Institutional Ownership & Insider Trading History
Top IONQ institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Price Jun 23, 4:00 PM EDT · Statements Mar 30, 8:00 PM EDT
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Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
Source: Market data provider
Analystevery 1 day
Provider checked •
Source: Market data provider
Newsevery 4 hr
Latest item •
Source: Market data provider
Ownership read
IONQ insider sentiment: Mixed, sale-heavy.
VANGUARD GROUP INC is the largest institutional holder. 71 sales and 49 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
IONQ
Purchases7.64M
Sales15.95M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
34.77M
VANGUARD GROUP INC
Insider stance
Mixed, sale-heavy
$385.56M sold / $2.83M bought
Latest filing
Jun 18, 2026
Most recent holder or insider filing date
Filings shown
240
120 holder / 120 insider
- Holder rows
- 120
- Market data source
- Latest filing
- Jun 18, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 69
- 44 decreased
- Insider rows
- 120
- Market data source
Top 120 institutional holders
IONQ Inc (IONQ) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.
BLACKROCK
Rank #2
7.96%
- Shares
- 29.87M
- Change
- -206.61K
- Change %
- -69.00%
- Filing
- Mar 31, 2026
Decreased
MORGAN STANLEY
Rank #3
5.64%
- Shares
- 21.16M
- Change
- +1.59M
- Change %
- +8.14%
- Filing
- Mar 31, 2026
Increased
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #4
4.10%
- Shares
- 15.39M
- Change
- +15.39M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
VANGUARD CAPITAL MANAGEMENT LLC
Rank #5
4.01%
- Shares
- 15.06M
- Change
- +15.06M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
DEFIANCE ETFS
Rank #6
2.59%
- Shares
- 9.70M
- Change
- +8.93M
- Change %
- +1155.19%
- Filing
- Mar 31, 2026
Increased
STATE STREET CORP
Rank #7
2.47%
- Shares
- 9.27M
- Change
- +308.07K
- Change %
- +3.44%
- Filing
- Mar 31, 2026
Increased
GEODE CAPITAL MANAGEMENT
Rank #8
2.25%
- Shares
- 8.44M
- Change
- +365.76K
- Change %
- +4.53%
- Filing
- Mar 31, 2026
Increased
UBS GROUP AG
Rank #9
1.55%
- Shares
- 5.81M
- Change
- +1.58M
- Change %
- +37.44%
- Filing
- Mar 31, 2026
Increased
NORGES BANK
Rank #10
1.19%
- Shares
- 4.45M
- Change
- +1.78M
- Change %
- +66.68%
- Filing
- Dec 31, 2025
Increased
MAREX GROUP PLC
Rank #11
1.07%
- Shares
- 4.01M
- Change
- -77.54K
- Change %
- -1.90%
- Filing
- Mar 31, 2026
Decreased
GOLDMAN SACHS GROUP INC
Rank #12
0.95%
- Shares
- 3.55M
- Change
- +1.72M
- Change %
- +93.83%
- Filing
- Mar 31, 2026
Increased
NORTHERN TRUST CORP
Rank #13
0.86%
- Shares
- 3.24M
- Change
- -41.91K
- Change %
- -128.00%
- Filing
- Mar 31, 2026
Decreased
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Rank #14
0.77%
- Shares
- 2.90M
- Change
- -17.55K
- Change %
- -60.00%
- Filing
- Mar 31, 2026
Decreased
VANGUARD FIDUCIARY TRUST CO
Rank #15
0.63%
- Shares
- 2.38M
- Change
- +2.38M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
TWO SIGMA INVESTMENTS
Rank #16
0.62%
- Shares
- 2.34M
- Change
- +2.17M
- Change %
- +1241.50%
- Filing
- Mar 31, 2026
Increased
D. E. SHAW & CO.
Rank #17
0.51%
- Shares
- 1.90M
- Change
- +1.02M
- Change %
- +116.17%
- Filing
- Mar 31, 2026
Increased
CLEAR STREET GROUP INC.
Rank #18
0.49%
- Shares
- 1.83M
- Change
- -1.36M
- Change %
- -42.69%
- Filing
- Mar 31, 2026
Decreased
BANK OF NEW YORK MELLON CORP
Rank #19
0.48%
- Shares
- 1.82M
- Change
- +78.22K
- Change %
- +4.50%
- Filing
- Mar 31, 2026
Increased
BANK OF AMERICA CORP
Rank #20
0.48%
- Shares
- 1.81M
- Change
- -329.40K
- Change %
- -15.41%
- Filing
- Mar 31, 2026
Decreased
FMR LLC
Rank #21
0.45%
- Shares
- 1.70M
- Change
- -284.03K
- Change %
- -14.35%
- Filing
- Mar 31, 2026
Decreased
LEGAL & GENERAL GROUP PLC
Rank #22
0.42%
- Shares
- 1.59M
- Change
- +231.86K
- Change %
- +17.02%
- Filing
- Mar 31, 2026
Increased
HRT FINANCIAL LP
Rank #23
0.39%
- Shares
- 1.46M
- Change
- +1.46M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
JANE STREET GROUP
Rank #24
0.39%
- Shares
- 1.45M
- Change
- +1.44M
- Change %
- +15990.72%
- Filing
- Mar 31, 2026
Increased
PRICE T ROWE ASSOCIATES INC
Rank #25
0.38%
- Shares
- 1.44M
- Change
- -2.57M
- Change %
- -64.17%
- Filing
- Mar 31, 2026
Decreased
WESTFIELD CAPITAL MANAGEMENT CO LP
Rank #26
0.37%
- Shares
- 1.37M
- Change
- +259.12K
- Change %
- +23.25%
- Filing
- Mar 31, 2026
Increased
NATIONAL BANK OF CANADA
Rank #27
0.36%
- Shares
- 1.33M
- Change
- +1.32M
- Change %
- +7219.79%
- Filing
- Mar 31, 2026
Increased
NUVEEN
Rank #28
0.34%
- Shares
- 1.29M
- Change
- -248.74K
- Change %
- -16.20%
- Filing
- Mar 31, 2026
Decreased
VAN ECK ASSOCIATES CORP
Rank #29
0.33%
- Shares
- 1.25M
- Change
- +467.54K
- Change %
- +59.93%
- Filing
- Mar 31, 2026
Increased
BNP PARIBAS FINANCIAL MARKETS
Rank #30
0.33%
- Shares
- 1.22M
- Change
- +434.01K
- Change %
- +55.09%
- Filing
- Mar 31, 2026
Increased
UBS AM
Rank #31
0.30%
- Shares
- 1.13M
- Change
- +43.28K
- Change %
- +4.00%
- Filing
- Mar 31, 2026
Increased
ALYESKA INVESTMENT GROUP
Rank #32
0.30%
- Shares
- 1.12M
- Change
- +1.12M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
CANTOR FITZGERALD
Rank #33
0.29%
- Shares
- 1.08M
- Change
- -887.95K
- Change %
- -45.18%
- Filing
- Mar 31, 2026
Decreased
SUSQUEHANNA INTERNATIONAL GROUP
Rank #34
0.29%
- Shares
- 1.08M
- Change
- -507.35K
- Change %
- -32.05%
- Filing
- Mar 31, 2026
Decreased
BANK OF MONTREAL
Rank #35
0.28%
- Shares
- 1.04M
- Change
- -29.63K
- Change %
- -2.78%
- Filing
- Mar 31, 2026
Decreased
WELLINGTON MANAGEMENT GROUP LLP
Rank #36
0.27%
- Shares
- 1.02M
- Change
- -410.84K
- Change %
- -28.81%
- Filing
- Mar 31, 2026
Decreased
DIMENSIONAL FUND ADVISORS LP
Rank #37
0.25%
- Shares
- 930.32K
- Change
- +152.95K
- Change %
- +19.68%
- Filing
- Mar 31, 2026
Increased
AMUNDI
Rank #38
0.25%
- Shares
- 926.99K
- Change
- -8.80K
- Change %
- -94.00%
- Filing
- Mar 31, 2026
Decreased
VOYA INVESTMENT MANAGEMENT LLC
Rank #39
0.24%
- Shares
- 886.28K
- Change
- -18.93K
- Change %
- -2.09%
- Filing
- Mar 31, 2026
Decreased
SWISS NATIONAL BANK
Rank #40
0.23%
- Shares
- 866.65K
- Change
- +57.50K
- Change %
- +7.11%
- Filing
- Mar 31, 2026
Increased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 9.27% | 34.77M | +5.42M Increased | +18.46% | Dec 31, 2025 | |
| 2 | 7.96% | 29.87M | -206.61K Decreased | -69.00% | Mar 31, 2026 | |
| 3 | 5.64% | 21.16M | +1.59M Increased | +8.14% | Mar 31, 2026 | |
| 4 | 4.10% | 15.39M | +15.39M Initiated | — | Mar 31, 2026 | |
| 5 | 4.01% | 15.06M | +15.06M Initiated | — | Mar 31, 2026 | |
| 6 | DEFIANCE ETFS | 2.59% | 9.70M | +8.93M Increased | +1155.19% | Mar 31, 2026 |
| 7 | 2.47% | 9.27M | +308.07K Increased | +3.44% | Mar 31, 2026 | |
| 8 | 2.25% | 8.44M | +365.76K Increased | +4.53% | Mar 31, 2026 | |
| 9 | 1.55% | 5.81M | +1.58M Increased | +37.44% | Mar 31, 2026 | |
| 10 | 1.19% | 4.45M | +1.78M Increased | +66.68% | Dec 31, 2025 | |
| 11 | MAREX GROUP PLC | 1.07% | 4.01M | -77.54K Decreased | -1.90% | Mar 31, 2026 |
| 12 | 0.95% | 3.55M | +1.72M Increased | +93.83% | Mar 31, 2026 | |
| 13 | 0.86% | 3.24M | -41.91K Decreased | -128.00% | Mar 31, 2026 | |
| 14 | 0.77% | 2.90M | -17.55K Decreased | -60.00% | Mar 31, 2026 | |
| 15 | 0.63% | 2.38M | +2.38M Initiated | — | Mar 31, 2026 | |
| 16 | TWO SIGMA INVESTMENTS | 0.62% | 2.34M | +2.17M Increased | +1241.50% | Mar 31, 2026 |
| 17 | 0.51% | 1.90M | +1.02M Increased | +116.17% | Mar 31, 2026 | |
| 18 | CLEAR STREET GROUP INC. | 0.49% | 1.83M | -1.36M Decreased | -42.69% | Mar 31, 2026 |
| 19 | BANK OF NEW YORK MELLON CORP | 0.48% | 1.82M | +78.22K Increased | +4.50% | Mar 31, 2026 |
| 20 | 0.48% | 1.81M | -329.40K Decreased | -15.41% | Mar 31, 2026 | |
| 21 | 0.45% | 1.70M | -284.03K Decreased | -14.35% | Mar 31, 2026 | |
| 22 | 0.42% | 1.59M | +231.86K Increased | +17.02% | Mar 31, 2026 | |
| 23 | HRT FINANCIAL LP | 0.39% | 1.46M | +1.46M Initiated | — | Mar 31, 2026 |
| 24 | JANE STREET GROUP | 0.39% | 1.45M | +1.44M Increased | +15990.72% | Mar 31, 2026 |
| 25 | 0.38% | 1.44M | -2.57M Decreased | -64.17% | Mar 31, 2026 | |
| 26 | WESTFIELD CAPITAL MANAGEMENT CO LP | 0.37% | 1.37M | +259.12K Increased | +23.25% | Mar 31, 2026 |
| 27 | NATIONAL BANK OF CANADA | 0.36% | 1.33M | +1.32M Increased | +7219.79% | Mar 31, 2026 |
| 28 | NUVEEN | 0.34% | 1.29M | -248.74K Decreased | -16.20% | Mar 31, 2026 |
| 29 | VAN ECK ASSOCIATES CORP | 0.33% | 1.25M | +467.54K Increased | +59.93% | Mar 31, 2026 |
| 30 | BNP PARIBAS FINANCIAL MARKETS | 0.33% | 1.22M | +434.01K Increased | +55.09% | Mar 31, 2026 |
| 31 | 0.30% | 1.13M | +43.28K Increased | +4.00% | Mar 31, 2026 | |
| 32 | ALYESKA INVESTMENT GROUP | 0.30% | 1.12M | +1.12M Initiated | — | Mar 31, 2026 |
| 33 | CANTOR FITZGERALD | 0.29% | 1.08M | -887.95K Decreased | -45.18% | Mar 31, 2026 |
| 34 | SUSQUEHANNA INTERNATIONAL GROUP | 0.29% | 1.08M | -507.35K Decreased | -32.05% | Mar 31, 2026 |
| 35 | BANK OF MONTREAL | 0.28% | 1.04M | -29.63K Decreased | -2.78% | Mar 31, 2026 |
| 36 | 0.27% | 1.02M | -410.84K Decreased | -28.81% | Mar 31, 2026 | |
| 37 | 0.25% | 930.32K | +152.95K Increased | +19.68% | Mar 31, 2026 | |
| 38 | 0.25% | 926.99K | -8.80K Decreased | -94.00% | Mar 31, 2026 | |
| 39 | VOYA INVESTMENT MANAGEMENT LLC | 0.24% | 886.28K | -18.93K Decreased | -2.09% | Mar 31, 2026 |
| 40 | SWISS NATIONAL BANK | 0.23% | 866.65K | +57.50K Increased | +7.11% | Mar 31, 2026 |
Showing 40 of 120 matching institutional rows.Load more institutions
Recent insider transactions
IONQ Inc (IONQ) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
CHOU, KATHRYN K.
Director
- Shares
- 2.76K
- % company
- <0.01%
- Price
- $55.02
- Value
- $151,690
Filed Jun 18, 2026
TOLEDANO, GABRIELLE B
Director
- Shares
- 2.76K
- % company
- <0.01%
- Price
- $55.01
- Value
- $151,663
Filed Jun 18, 2026
RAYMOND, JOHN W
Director, Special Advisor
- Shares
- 3.81K
- % company
- <0.01%
- Price
- $55.01
- Value
- $209,863
Filed Jun 18, 2026
CHOU, KATHRYN K.
Director
- Shares
- 4.53K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 17, 2026
FRANKOLA, JIM
Director
- Shares
- 4.53K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 17, 2026
TEUBER, WILLIAM J JR
Director
- Shares
- 4.53K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 17, 2026
TOLEDANO, GABRIELLE B
Director
- Shares
- 4.53K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 17, 2026
SCANNELL, WILLIAM F
Director
- Shares
- 4.53K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 17, 2026
SINGH, INDER M
CFO & COO
- Shares
- 2.62K
- % company
- <0.01%
- Price
- $59.75
- Value
- $156,366
Filed Jun 16, 2026
CARDILLO, ROBERT T.
Director, Executive Chair, IonQ Federal
- Shares
- 904
- % company
- <0.01%
- Price
- $56.21
- Value
- $50,810
Filed Jun 11, 2026
DE, MASI NICCOLO
Director, President and CEO
- Shares
- 16.12K
- % company
- <0.01%
- Price
- $56.21
- Value
- $906,028
Filed Jun 11, 2026
SINGH, INDER M
CFO & COO
- Shares
- 6.27K
- % company
- <0.01%
- Price
- $56.21
- Value
- $352,519
Filed Jun 11, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | CHOU, KATHRYN K. Director | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 2.76K | $55.02 | $151,690 | Jun 18, 2026 |
| 2 | TOLEDANO, GABRIELLE B Director | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 2.76K | $55.01 | $151,663 | Jun 18, 2026 |
| 3 | RAYMOND, JOHN W Director, Special Advisor | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 3.81K | $55.01 | $209,863 | Jun 18, 2026 |
| 4 | CHOU, KATHRYN K. Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 4.53K | Not reported | Not reported | Jun 17, 2026 |
| 5 | FRANKOLA, JIM Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 4.53K | Not reported | Not reported | Jun 17, 2026 |
| 6 | TEUBER, WILLIAM J JR Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 4.53K | Not reported | Not reported | Jun 17, 2026 |
| 7 | TOLEDANO, GABRIELLE B Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 4.53K | Not reported | Not reported | Jun 17, 2026 |
| 8 | SCANNELL, WILLIAM F Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 4.53K | Not reported | Not reported | Jun 17, 2026 |
| 9 | SINGH, INDER M CFO & COO | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 2.62K | $59.75 | $156,366 | Jun 16, 2026 |
| 10 | CARDILLO, ROBERT T. Director, Executive Chair, IonQ Federal | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 904 | $56.21 | $50,810 | Jun 11, 2026 |
| 11 | DE, MASI NICCOLO Director, President and CEO | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 16.12K | $56.21 | $906,028 | Jun 11, 2026 |
| 12 | SINGH, INDER M CFO & COO | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 6.27K | $56.21 | $352,519 | Jun 11, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest IONQ shareholders?
VANGUARD GROUP INC is the largest institutional holder of IONQ, with 34.77 million shares, or about 9.27% of shares outstanding. Additional institutions are ranked by reported share count.
What is institutional ownership of IONQ?
IONQ Inc (IONQ) has 120 institutional holders on file — 69 that increased or initiated positions and 44 that reduced them, as of the latest filing on Mar 31, 2026.
Where can I see IONQ Inc insider transactions?
IONQ Inc (IONQ) has 120 Form 4 insider transactions on file, most recently on Jun 18, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.
Are IONQ insiders buying or selling?
Recent IONQ insider activity reads Mixed, sale-heavy: 71 sales and 49 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.
Who is the most active IONQ insider?
CHAPMAN, PETER HUME is the most active IONQ insider by absolute share movement, with 17.98 million shares moving across the filing history. Review the action labels before treating that activity as buying or selling.