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Russell Investments Group, Ltd.: KOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Russell Investments Group, Ltd. on KOS, newest first. How the timeline and the estimate are built.

Russell Investments Group, Ltd. held 2,643,845 KOS shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,643,845 shares
    Change vs previous 13F -3,213,810 shares

    <0.01% of the 13F portfolio, value $5,578,512.

    13F-HR 0001193125-26-336961 filed by Russell Investments Group, Ltd.
    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 5,857,655 shares
    Change vs previous 13F -27,998 shares

    0.02% of the 13F portfolio, value $16,284,280.

    13F-HR 0001193125-26-213225 filed by Russell Investments Group, Ltd.
    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 5,885,653 shares
    Change vs previous 13F -354,073 shares

    0.01% of the 13F portfolio, value $5,340,640.

    13F-HR 0001193125-26-053181 filed by Russell Investments Group, Ltd.
    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 6,239,726 shares
    Change vs previous 13F -224,851 shares

    0.01% of the 13F portfolio, value $10,357,943.

    13F-HR 0001193125-25-278803 filed by Russell Investments Group, Ltd.
    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 6,464,577 shares
    Change vs previous 13F +1,145,057 shares

    0.01% of the 13F portfolio, value $11,119,071.

    13F-HR 0000950123-25-007728 filed by Russell Investments Group, Ltd.
    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 5,319,520 shares
    Change vs previous 13F +1,125,724 shares

    0.02% of the 13F portfolio, value $12,128,502.

    13F-HR 0000950123-25-004729 filed by Russell Investments Group, Ltd.
    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 4,193,796 shares
    Change vs previous 13F -745,292 shares

    0.02% of the 13F portfolio, value $14,342,784.

    13F-HR 0000950123-25-001908 filed by Russell Investments Group, Ltd.
    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 4,939,088 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $19,904,526.

    13F-HR 0000950123-24-011064 filed by Russell Investments Group, Ltd.
    Filed (acceptance time not in the bulk data set), ingested

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