ATI INC COM is a security (CUSIP 01741R902) tracked across SEC portfolio filings. 5 institutional managers reported $23.2M on Form 13F as of 2026-06-30.
| Manager | Location | Value | Shares |
|---|---|---|---|
| IMC-Chicago, LLC | CHICAGO, IL | $17.0M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $5.0M | — |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $1.2M | — |
| SG Americas Securities, LLC | NEW YORK, NY | $140 | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |