ADTRAN HOLDINGS INC COM is a security (CUSIP 00486H905) tracked across SEC portfolio filings. 3 institutional managers reported $1.0M on Form 13F as of 2026-06-30.
| Manager | Location | Value | Shares |
|---|---|---|---|
| IMC-Chicago, LLC | CHICAGO, IL | $997K | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $6K | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |