Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in IONQ held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 29.9M | $861.2M | -0.7% | 8.147% | 0.02% |
| 2 | MORGAN STANLEY | 21.2M | $610.0M | +8.1% | 5.771% | 0.04% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 15.4M | $443.7M | β | 4.197% | 0.02% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 15.1M | $434.3M | β | 4.109% | 0.01% |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 12.4M | $358.7M | +14.9% | 3.393% | 0.04% |
| 6 | Defiance ETFs, LLC | 9.7M | $279.7M | +1155.2% | 2.646% | 4.01% |
| 7 | STATE STREET CORP | 9.3M | $267.3M | +3.4% | 2.529% | 0.01% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 8.4M | $242.9M | +4.5% | 2.302% | 0.02% |
| 9 | GOLDMAN SACHS GROUP INC | 6.3M | $181.7M | +243.8% | 1.719% | 0.02% |
| 10 | UBS Group AG | 6.1M | $176.8M | +43.1% | 1.673% | 0.03% |
| 11 | Marex Group plc | 4.0M | $115.5M | -1.9% | 1.093% | 0.32% |
| 12 | NORTHERN TRUST CORP | 3.2M | $93.3M | -1.3% | 0.882% | 0.01% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.9M | $83.7M | -0.6% | 0.791% | 0.01% |
| 14 | TWO SIGMA INVESTMENTS, LP | 2.5M | $71.1M | +483.0% | 0.673% | 0.06% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 2.4M | $68.6M | β | 0.649% | 0.02% |
| 16 | NOMURA HOLDINGS INC | 2.2M | $62.4M | +54.8% | 0.591% | 0.21% |
| 17 | BANK OF MONTREAL /CAN/ | 1.9M | $53.8M | -1.4% | 0.509% | 0.02% |
| 18 | Clear Street Group Inc. | 1.8M | $52.8M | -42.7% | 0.500% | 0.21% |
| 19 | Bank of New York Mellon Corp | 1.8M | $52.3M | +4.5% | 0.495% | 0.01% |
| 20 | BANK OF AMERICA CORP /DE/ | 1.8M | $52.1M | -15.4% | 0.493% | 0.00% |
| 21 | FMR LLC | 1.7M | $48.9M | -14.3% | 0.462% | 0.00% |
| 22 | Legal & General Group Plc | 1.6M | $45.9M | +17.0% | 0.435% | 0.01% |
| 23 | WESTFIELD CAPITAL MANAGEMENT CO LP | 1.4M | $39.6M | +23.3% | 0.375% | 0.17% |
| 24 | NATIONAL BANK OF CANADA /FI/ | 1.3M | $38.4M | +7219.8% | 0.364% | 0.04% |
| 25 | Nuveen, LLC | 1.3M | $37.1M | -16.2% | 0.351% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in IONQ β a direct measure of their conviction.
Filings activity in IONQ during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new IONQ position in Q1 2026
Institutions that fully closed their IONQ position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 611 | 4.7% | 28.45% | 13.09 pp | $6.03B | 32% |
| Q4 2025 | 641 | +9.8% | 41.54% | 8.55 pp | $8.81B | 17% |
| Q3 2025 | 584 | +24% | 50.09% | +21.58 pp | $10.62B | +76% |
| Q2 2025 | 471 | +31% | 28.51% | +17.61 pp | $6.05B | +162% |
| Q1 2025 | 360 | +0.0% | 10.90% | 7.31 pp | $2.31B | 40% |
| Q4 2024 | 360 | +55% | 18.21% | +14.99 pp | $3.86B | +466% |
| Q3 2024 | 233 | +13% | 3.22% | +0.83 pp | $682M | +35% |
| Q2 2024 | 207 | β | 2.39% | β | $506M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying IONQ stock.
Based on Q1 2026 13F filings, institutional ownership of IonQ, Inc. stands at 28.4%, held across 611 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of IONQ, with approximately 29,870,942 shares worth $0.86B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of IONQ, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for IONQ is 35 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
110 institutions opened new positions in IONQ during Q1 2026, while 140 fully exited. 69 added to existing positions and 427 trimmed.
IONQ institutional ownership fell by 13.09 percentage points quarter-over-quarter, with a net change of -30 holders.
The top 10 institutions account for 63.9% of all reported 13F value in IONQ, and the top 25 account for 79.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
IonQ, Inc. (IONQ) Institutional Ownership