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D. E. Shaw & Co., Inc.: RBBN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of D. E. Shaw & Co., Inc. on RBBN, newest first. How the timeline and the estimate are built.

D. E. Shaw & Co., Inc. held 1,790,375 RBBN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,790,375 shares
    Change vs previous 13F +251,903 shares

    <0.01% of the 13F portfolio, value $4,189,477.

    13F-HR 0001104659-26-097217 filed by D. E. Shaw & Co., Inc.
    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 1,538,472 shares
    Change vs previous 13F +558,631 shares

    <0.01% of the 13F portfolio, value $3,261,561.

    13F-HR 0001104659-26-062472 filed by D. E. Shaw & Co., Inc.
    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 979,841 shares
    Change vs previous 13F +390,949 shares

    <0.01% of the 13F portfolio, value $2,821,942.

    13F-HR 0001104659-26-016332 filed by D. E. Shaw & Co., Inc.
    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 588,892 shares
    Change vs previous 13F +172,205 shares

    <0.01% of the 13F portfolio, value $2,237,790.

    13F-HR 0001104659-25-112505 filed by D. E. Shaw & Co., Inc.
    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 416,687 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $1,670,915.

    13F-HR 0001104659-25-078542 filed by D. E. Shaw & Co., Inc.
    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 416,687 shares
    Change vs previous 13F -52,812 shares

    <0.01% of the 13F portfolio, value $1,633,413.

    13F-HR 0001104659-25-049422 filed by D. E. Shaw & Co., Inc.
    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 469,499 shares
    Change vs previous 13F +84,999 shares

    <0.01% of the 13F portfolio, value $1,953,116.

    13F-HR 0001104659-25-014028 filed by D. E. Shaw & Co., Inc.
    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 384,500 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,249,625.

    13F-HR 0001104659-24-119021 filed by D. E. Shaw & Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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