ANTERIX INC COM is a security (CUSIP 03676C900) tracked across SEC portfolio filings. 4 institutional managers reported $10.6M on Form 13F as of 2026-03-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $9.3M | — |
| IMC-Chicago, LLC | CHICAGO, IL | $764K | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $550K | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |