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ARROWSTREET CAPITAL, LIMITED PARTNERSHIP: RBBN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARROWSTREET CAPITAL, LIMITED PARTNERSHIP on RBBN, newest first. How the timeline and the estimate are built.

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP held 1,215,230 RBBN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,215,230 shares
    Change vs previous 13F -1,646 shares

    <0.01% of the 13F portfolio, value $2,843,638.

    13F-HR 0001164508-26-000035 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 1,216,876 shares
    Change vs previous 13F +187,160 shares

    <0.01% of the 13F portfolio, value $2,579,777.

    13F-HR 0001164508-26-000028 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 1,029,716 shares
    Change vs previous 13F +65,270 shares

    <0.01% of the 13F portfolio, value $2,965,582.

    13F-HR 0001164508-26-000002 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 964,446 shares
    Change vs previous 13F +481,276 shares

    <0.01% of the 13F portfolio, value $3,664,895.

    13F-HR 0001164508-25-000009 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 483,170 shares
    Change vs previous 13F -73,154 shares

    <0.01% of the 13F portfolio, value $1,937,512.

    13F-HR 0001402828-25-000008 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 556,324 shares
    Change vs previous 13F -33,432 shares

    <0.01% of the 13F portfolio, value $2,180,790.

    13F-HR 0001402828-25-000004 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 589,756 shares
    Change vs previous 13F -100,314 shares

    <0.01% of the 13F portfolio, value $2,453,385.

    13F-HR 0001402828-25-000002 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 690,070 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $2,242,728.

    13F-HR 0001164508-24-000006 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    Filed (acceptance time not in the bulk data set), ingested

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