16 institutions reported holding $368.5M of IONQ INC (IONQWS) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($168.8M), SIMPLEX TRADING, LLC ($85.5M), GROUP ONE TRADING LLC ($84.8M), JPMORGAN CHASE & CO ($9.5M), FLOW TRADERS U.S. LLC ($6.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $168.8M | 3.2M | Added |
| 2 | SIMPLEX TRADING, LLC | $85.5M | 1.6M | Added |
| 3 | GROUP ONE TRADING LLC | $84.8M | 1.6M | Added |
| 4 | JPMORGAN CHASE & CO | $9.5M | 175,700 | Trimmed |
| 5 | FLOW TRADERS U.S. LLC | $6.8M | 164,347 | Trimmed |
| 6 | Aristides Capital LLC | $5.3M | 100,000 | Hold |
| 7 | NATIONAL BANK OF CANADA /FI/ | $2.7M | 510 | New |
| 8 | MILLENNIUM MANAGEMENT LLC | $1.9M | 45,000 | Hold |
| 9 | Saba Capital Management, L.P. | $1.4M | 32,248 | Hold |
| 10 | MORGAN STANLEY | $951,625 | 23,000 | New |
| 11 | CMT Capital Markets Trading GmbH | $815,000 | 15,300 | New |
| 12 | LMR Partners LLP | $57,677 | 1,394 | New |
| 13 | UBS Group AG | $14,109 | 341 | Added |
| 14 | Royal Bank of Canada | $10,000 | 250 | Hold |
| 15 | OSAIC HOLDINGS, INC. | $2,630 | 1 | Hold |
| 16 | HRT FINANCIAL LP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30