FIVE9 INC COM is a security (CUSIP 338307901) tracked across SEC portfolio filings. 4 institutional managers reported $18.8M on Form 13F as of 2026-06-30.
| Manager | Location | Value | Shares |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $10.3M | — |
| IMC-Chicago, LLC | CHICAGO, IL | $6.1M | — |
| SIMPLEX TRADING, LLC | CHICAGO, IL | $2.4M | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | — |