BLACKROCK INC COM is a security (CUSIP 09290D901) tracked across SEC portfolio filings. 7 institutional managers reported $244.5M on Form 13F as of 2026-03-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| Optiver Holding B.V. | AMSTERDAM, P7 | $106.0M | — |
| IMC-Chicago, LLC | CHICAGO, IL | $79.0M | — |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $22.2M | — |
| JPMORGAN CHASE & CO | NEW YORK, NY | $20.3M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $17.1M | — |
| HRT FINANCIAL LP | NEW YORK, NY | $7K | 6,900 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |