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DIMENSIONAL FUND ADVISORS LP: RBBN position timeline

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

DIMENSIONAL FUND ADVISORS LP held 6,286,323 RBBN shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,286,323 shares
    Change vs previous 13F -64,787 shares

    <0.01% of the 13F portfolio, value $14,707,941.

    13F-HR 0000354204-26-000866 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 6,351,110 shares
    Change vs previous 13F -124,015 shares

    <0.01% of the 13F portfolio, value $13,463,964.

    13F-HR 0000354204-26-000581 filed by DIMENSIONAL FUND ADVISORS LP
    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 6,475,125 shares
    Change vs previous 13F -70,410 shares

    <0.01% of the 13F portfolio, value $18,649,429.

    13F-HR 0000354204-26-000347 filed by DIMENSIONAL FUND ADVISORS LP
    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 6,545,535 shares
    Change vs previous 13F -19,631 shares

    0.01% of the 13F portfolio, value $24,872,120.

    13F-HR 0000354204-25-001337 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 6,565,166 shares
    Change vs previous 13F +191,831 shares

    0.01% of the 13F portfolio, value $26,325,838.

    13F-HR 0000354204-25-001097 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 6,373,335 shares
    Change vs previous 13F +58,666 shares

    0.01% of the 13F portfolio, value $24,984,504.

    13F-HR 0000354204-25-000866 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 6,314,669 shares
    Change vs previous 13F +302,039 shares

    0.01% of the 13F portfolio, value $26,269,174.

    13F-HR 0000354204-25-000528 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 6,012,630 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $19,541,232.

    13F-HR 0000354204-24-004773 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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