BLOCK INC CL A is a security (CUSIP 852234903) tracked across SEC portfolio filings. 10 institutional managers reported $242.2M on Form 13F as of 2026-06-30.
| Manager | Location | Value | Shares |
|---|---|---|---|
| IMC-Chicago, LLC | CHICAGO, IL | $114.5M | — |
| Optiver Holding B.V. | AMSTERDAM, P7 | $80.6M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $27.9M | — |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $8.3M | — |
| Maven Securities LTD | ST HELIER, Y9 | $8.1M | — |
| JPMORGAN CHASE & CO | NEW YORK, NY | $2.9M | — |
| Capital Markets Trading UK LLP | LONDON, X0 | $17K | — |
| CMT Capital Markets Trading GmbH | CHICAGO, IL | $3K | — |
| SG Americas Securities, LLC | NEW YORK, NY | $48 | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |