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Russell Investments Group, Ltd.: AMPH position timeline

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

Russell Investments Group, Ltd. held 18,108 AMPH 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 18,108 shares
    Change vs previous 13F +14,663 shares

    <0.01% of the 13F portfolio, value $365,419.

    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 3,445 shares
    Change vs previous 13F -284 shares

    <0.01% of the 13F portfolio, value $67,487.

    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 3,729 shares
    Change vs previous 13F -3,936 shares

    <0.01% of the 13F portfolio, value $99,862.

    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 7,665 shares
    Change vs previous 13F +6,830 shares

    <0.01% of the 13F portfolio, value $204,270.

    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 835 shares
    Change vs previous 13F -1,223 shares

    <0.01% of the 13F portfolio, value $19,172.

    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 2,058 shares
    Change vs previous 13F +1,862 shares

    <0.01% of the 13F portfolio, value $59,661.

    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 196 shares
    Change vs previous 13F -2,818 shares

    <0.01% of the 13F portfolio, value $7,277.

    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 3,014 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $146,269.

    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).