GARTNER INC COM is a security (CUSIP 366651907) tracked across SEC portfolio filings. 4 institutional managers reported $14.1M on Form 13F as of 2026-03-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| IMC-Chicago, LLC | CHICAGO, IL | $8.2M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $5.6M | — |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $333K | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |