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D. E. Shaw & Co., Inc.: AMSC position timeline

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

D. E. Shaw & Co., Inc. held 366,845 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 366,845 shares
    Change vs previous 13F -200,729 shares

    0.01% of the 13F portfolio, value $15,227,736.

    13F-HR 0001104659-26-097217 filed by D. E. Shaw & Co., 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 567,574 shares
    Change vs previous 13F +124,426 shares

    0.02% of the 13F portfolio, value $19,212,380.

    13F-HR 0001104659-26-062472 filed by D. E. Shaw & Co., 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 443,148 shares
    Change vs previous 13F -309,555 shares

    0.01% of the 13F portfolio, value $12,753,800.

    13F-HR 0001104659-26-016332 filed by D. E. Shaw & Co., 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 752,703 shares
    Change vs previous 13F +619,059 shares

    0.04% of the 13F portfolio, value $44,703,031.

    13F-HR 0001104659-25-112505 filed by D. E. Shaw & Co., 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 133,644 shares
    Change vs previous 13F +58,653 shares

    <0.01% of the 13F portfolio, value $4,903,399.

    13F-HR 0001104659-25-078542 filed by D. E. Shaw & Co., 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 74,991 shares
    Change vs previous 13F -177,218 shares

    <0.01% of the 13F portfolio, value $1,360,337.

    13F-HR 0001104659-25-049422 filed by D. E. Shaw & Co., 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 252,209 shares
    Change vs previous 13F -1,204 shares

    0.01% of the 13F portfolio, value $6,211,908.

    13F-HR 0001104659-25-014028 filed by D. E. Shaw & Co., 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 253,413 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $5,980,546.

    13F-HR 0001104659-24-119021 filed by D. E. Shaw & Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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