Who owns IonQ (IONQ)
Which tracked institutional funds hold IONQ, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IONQ company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on IONQ is one-sided between 2026-Q1 and 2026-Q2: 330 added or opened and 86 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
IONQ’s largest tracked holder by dollar value, MORGAN STANLEY, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IONQ divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 739 tracked filers holding IONQ, 505 increased or opened the position and 278 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in IONQ between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 69
- WORLDQUANT MILLENNIUM ADVISORS LLC$45M
- Qube Research & Technologies Ltd$20M
- Catalyst Funds Management Pty Ltd$19M
- IMC-Chicago, LLC$15M
- United Capital Management of KS, Inc.$12M
- VIRGINIA RETIREMENT SYSTEMS ET Al$11M
Full exits 56
- CITADEL ADVISORS LLC$93M
- HRT FINANCIAL LP$44M
- Pacer Advisors, Inc.$43M
- WESTFIELD CAPITAL MANAGEMENT CO LP$40M
- Alyeska Investment Group, L.P.$32M
- Amundi$27M
Largest adds
- MORGAN STANLEY$791M
- BlackRock, Inc.$424M
- VANGUARD CAPITAL MANAGEMENT LLC$396M
- VANGUARD PORTFOLIO MANAGEMENT LLC$300M
- BANK OF AMERICA CORP /DE/$293M
- UBS Group AG$253M
Largest trims
- MILLENNIUM MANAGEMENT LLC$678M
- Defiance ETFs, LLC$218M
- EverSource Wealth Advisors, LLC$26M
- TWO SIGMA INVESTMENTS, LP$25M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$18M
- WELLINGTON MANAGEMENT GROUP LLP$16M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MORGAN STANLEY added | 26,279,397 | $1.4B | 14.8% | 2026-Q2 |
| BlackRock, Inc. trimmed | 20,896,455 | $1.1B | 11.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 15,598,546 | $831M | 8.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 13,959,259 | $743M | 7.8% | 2026-Q2 |
| STATE STREET CORP trimmed | 8,123,629 | $433M | 4.6% | 2026-Q2 |
| UBS Group AG added | 7,896,730 | $421M | 4.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 6,473,088 | $345M | 3.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 6,459,949 | $343M | 3.6% | 2026-Q2 |
| NORGES BANK added | 5,188,962 | $276M | 2.9% | 2026-Q2 |
| Marex Group Ltd trimmed | 3,707,611 | $197M | 2.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 2,690,977 | $143M | 1.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 2,369,500 | $126M | 1.3% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 2,333,007 | $124M | 1.3% | 2026-Q2 |
| MARSHALL WACE, LLP added | 2,327,425 | $124M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 2,209,642 | $118M | 1.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 2,137,879 | $114M | 1.2% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 2,056,763 | $110M | 1.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,959,358 | $104M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 1,789,611 | $95M | 1.0% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,632,290 | $87M | 0.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,565,044 | $83M | 0.9% | 2026-Q2 |
| Legal & General Group Plc trimmed | 1,541,983 | $82M | 0.9% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 1,245,695 | $66M | 0.7% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP trimmed | 1,203,346 | $64M | 0.7% | 2026-Q2 |
| Defiance ETFs, LLC trimmed | 1,197,663 | $62M | 0.6% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ trimmed | 1,187,896 | $63M | 0.7% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 1,088,548 | $58M | 0.6% | 2026-Q2 |
| CANTOR FITZGERALD, L. P. trimmed | 1,068,808 | $57M | 0.6% | 2026-Q2 |
| Squarepoint Ops LLC added | 1,067,412 | $57M | 0.6% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 1,052,066 | $56M | 0.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,037,255 | $55M | 0.6% | 2026-Q2 |
| Daiwa Securities Group Inc. added | 973,433 | $52M | 0.5% | 2026-Q2 |
| LANSDOWNE PARTNERS (UK) LLP added | 966,433 | $51M | 0.5% | 2026-Q2 |
| Swiss National Bank added | 956,548 | $51M | 0.5% | 2026-Q2 |
| LPL Financial LLC added | 907,334 | $48M | 0.5% | 2026-Q2 |
| Nuveen, LLC trimmed | 859,996 | $46M | 0.5% | 2026-Q2 |
| WORLDQUANT MILLENNIUM ADVISORS LLC new | 836,927 | $45M | 0.5% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 829,020 | $44M | 0.5% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 805,647 | $43M | 0.5% | 2026-Q2 |
| UNICOM Systems, Inc. | 768,900 | $41M | 0.4% | 2026-Q2 |
| Chevy Chase Trust Holdings, LLC trimmed | 707,634 | $38M | 0.4% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 703,417 | $37M | 0.4% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC added | 666,404 | $35M | 0.4% | 2026-Q2 |
| FMR LLC trimmed | 660,126 | $35M | 0.4% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. added | 636,380 | $34M | 0.4% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 630,279 | $34M | 0.4% | 2026-Q2 |
| NOMURA HOLDINGS INC added | 630,196 | $34M | 0.4% | 2026-Q2 |
| California Public Employees Retirement System added | 604,778 | $32M | 0.3% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 593,318 | $32M | 0.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 557,468 | $30M | 0.3% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 531,709 | $28M | 0.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 522,644 | $28M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 514,089 | $27M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 456,580 | $24M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 444,625 | $24M | 0.2% | 2026-Q2 |
| Mubadala Investment Co PJSC | 428,520 | $23M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 424,314 | $23M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 411,173 | $22M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 406,889 | $22M | 0.2% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 390,866 | $21M | 0.2% | 2026-Q2 |
| Qube Research & Technologies Ltd new | 383,146 | $20M | 0.2% | 2026-Q2 |
| DNB Asset Management AS added | 379,429 | $20M | 0.2% | 2026-Q2 |
| Catalyst Funds Management Pty Ltd new | 356,300 | $19M | 0.2% | 2026-Q2 |
| CAPITAL ADVISORS INC/OK added | 350,038 | $19M | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 346,254 | $20M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 333,230 | $18M | 0.2% | 2026-Q2 |
| Eurizon Capital SGR S.p.A. trimmed | 329,090 | $18M | 0.2% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM added | 324,510 | $17M | 0.2% | 2026-Q2 |
| JENNISON ASSOCIATES LLC added | 283,465 | $15M | 0.2% | 2026-Q2 |
| Orion Investment Co added | 280,198 | $15M | 0.2% | 2026-Q2 |
| IMC-Chicago, LLC added | 278,194 | $15M | 0.2% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 271,535 | $14M | 0.2% | 2026-Q2 |
| Creative Planning added | 265,685 | $14M | 0.1% | 2026-Q2 |
| SBI Securities Co., Ltd. added | 264,484 | $14M | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 255,793 | $14M | 0.1% | 2026-Q2 |
| Vident Advisory, LLC trimmed | 249,596 | $13M | 0.1% | 2026-Q2 |
| Cetera Investment Advisers added | 235,598 | $13M | 0.1% | 2026-Q2 |
| AVIVA PLC added | 234,675 | $12M | 0.1% | 2026-Q2 |
| United Capital Management of KS, Inc. new | 231,271 | $12M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 225,578 | $12M | 0.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 216,337 | $12M | 0.1% | 2026-Q2 |
| Tidal Investments LLC added | 216,109 | $12M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 208,494 | $11M | 0.1% | 2026-Q2 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 207,500 | $11M | 0.1% | 2026-Q2 |
| VIRGINIA RETIREMENT SYSTEMS ET Al added | 203,129 | $11M | 0.1% | 2026-Q2 |
| Raiffeisen Bank International AG new | 200,000 | $11M | 0.1% | 2026-Q2 |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC new | 200,000 | $11M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 198,481 | $11M | 0.1% | 2026-Q2 |
| HAMILTON LANE ADVISORS LLC | 195,000 | $10M | 0.1% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC new | 191,814 | $10M | 0.1% | 2026-Q2 |
| STRS OHIO added | 187,352 | $10M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 185,173 | $10M | 0.1% | 2026-Q2 |
| Kestra Advisory Services, LLC added | 184,050 | $10M | 0.1% | 2026-Q2 |
| McGuire Investment Group, LLC added | 180,002 | $10M | 0.1% | 2026-Q2 |
| Baird Financial Group, Inc. added | 179,265 | $10M | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 179,017 | $10M | 0.1% | 2026-Q2 |
| Weiss Asset Management LP added | 177,160 | $9M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 176,876 | $9M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 175,849 | $9M | 0.1% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 172,392 | $9M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.