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AWM Investment Company, Inc.: AMSC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of AWM Investment Company, Inc. on AMSC, newest first. How the timeline and the estimate are built.

AWM Investment Company, Inc. held 951,604 AMSC 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 951,604 shares
    Change vs previous 13F +150,000 shares

    3.43% of the 13F portfolio, value $39,501,082.

    13F-HR 0001535264-26-000051 filed by AWM Investment Company, 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 801,604 shares
    Change vs previous 13F +47,384 shares

    3% of the 13F portfolio, value $27,134,295.

    13F-HR 0001535264-26-000032 filed by AWM Investment Company, 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 754,220 shares
    Change vs previous 13F +8,750 shares

    2.1% of the 13F portfolio, value $21,706,452.

    13F-HR 0001535264-26-000016 filed by AWM Investment Company, 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 745,470 shares
    Change vs previous 13F -813,008 shares

    4.15% of the 13F portfolio, value $44,273,463.

    13F-HR 0001535264-25-000059 filed by AWM Investment Company, 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 1,558,478 shares
    Change vs previous 13F 0 shares

    6.41% of the 13F portfolio, value $57,180,558.

    13F-HR 0001535264-25-000052 filed by AWM Investment Company, 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 1,558,478 shares
    Change vs previous 13F +45,000 shares

    3.89% of the 13F portfolio, value $28,270,791.

    13F-HR 0001535264-25-000043 filed by AWM Investment Company, 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 1,513,478 shares
    Change vs previous 13F -205,589 shares

    4.54% of the 13F portfolio, value $37,276,963.

    13F-HR 0001535264-25-000019 filed by AWM Investment Company, 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 1,719,067 shares
    Change vs previous 13F not available

    4.92% of the 13F portfolio, value $40,569,981.

    13F-HR 0001535264-24-000066 filed by AWM Investment Company, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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