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CITADEL ADVISORS LLC: RBBN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CITADEL ADVISORS LLC on RBBN, newest first. How the timeline and the estimate are built.

CITADEL ADVISORS LLC held 1,241,200 RBBN shares at 2026-06-30 per its 13F-HR/A filed 2026-09-02.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 1,241,200 shares
    Change vs previous 13F +666,211 shares

    <0.01% of the 13F portfolio, value $2,904,408.

    13F-HR/A 0001104659-26-104387 filed by CITADEL ADVISORS LLC
    Accepted , ingested

  2. period ended2026-03-31
    13F 574,989 shares
    Change vs previous 13F +521,086 shares

    <0.01% of the 13F portfolio, value $1,218,977.

    13F-HR 0001104659-26-062477 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 53,903 shares
    Change vs previous 13F -1,651 shares

    <0.01% of the 13F portfolio, value $155,241.

    13F-HR 0001104659-26-016408 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 55,554 shares
    Change vs previous 13F +55,554 shares

    <0.01% of the 13F portfolio, value $211,105.

    13F-HR 0001104659-25-112514 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -132,280 shares

    13F-HR 0000950123-25-005687 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  6. period ended2024-12-31
    13F 132,280 shares
    Change vs previous 13F +51,024 shares

    <0.01% of the 13F portfolio, value $550,285.

    13F-HR 0000950123-25-002739 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-09-30
    13F 81,256 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $264,082.

    13F-HR 0000950123-24-011767 filed by CITADEL ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).