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Russell Investments Group, Ltd.: AMSC position timeline

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

Russell Investments Group, Ltd. held 171,764 AMSC 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 171,764 shares
    Change vs previous 13F +134,400 shares

    0.01% of the 13F portfolio, value $7,129,984.

    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 37,364 shares
    Change vs previous 13F +2,299 shares

    <0.01% of the 13F portfolio, value $1,264,770.

    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 35,065 shares
    Change vs previous 13F +12,672 shares

    <0.01% of the 13F portfolio, value $1,009,178.

    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 22,393 shares
    Change vs previous 13F +14,657 shares

    <0.01% of the 13F portfolio, value $1,329,930.

    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 7,736 shares
    Change vs previous 13F +7,577 shares

    <0.01% of the 13F portfolio, value $283,848.

    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 159 shares
    Change vs previous 13F -7 shares

    <0.01% of the 13F portfolio, value $2,884.

    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 166 shares
    Change vs previous 13F -8,486 shares

    <0.01% of the 13F portfolio, value $4,089.

    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 8,652 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $204,187.

    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).