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Boston Trust Walden Corp: AMPH position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Boston Trust Walden Corp on AMPH, newest first. How the timeline and the estimate are built.

Boston Trust Walden Corp held 0 AMPH shares at 2026-06-30 per its 13F-HR filed 2026-07-24.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 0 shares
    Change vs previous 13F -944,789 shares

    13F-HR 0001534866-26-000005 filed by Boston Trust Walden Corp
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2026-03-31
    13F 944,789 shares
    Change vs previous 13F -142,477 shares

    0.15% of the 13F portfolio, value $18,508,417.

    13F-HR 0001534866-26-000004 filed by Boston Trust Walden Corp
    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 1,087,266 shares
    Change vs previous 13F -85,841 shares

    0.22% of the 13F portfolio, value $29,116,984.

    13F-HR 0001534866-26-000002 filed by Boston Trust Walden Corp
    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 1,173,107 shares
    Change vs previous 13F -3,346 shares

    0.23% of the 13F portfolio, value $31,263,302.

    13F-HR 0001534866-25-000014 filed by Boston Trust Walden Corp
    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/A 1,176,453 shares
    Change vs previous 13F -462,241 shares

    0.19% of the 13F portfolio, value $27,011,361.

    13F-HR 0001534866-25-000010 filed by Boston Trust Walden Corp
    Filed (acceptance time not in the bulk data set), ingested

    • Boston Partners: 0 shares
    • Boston Trust Walden Corp: 1,176,453 shares

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

  6. period ended2025-03-31
    13F 1,638,694 shares
    Change vs previous 13F +233,138 shares

    0.05% of the 13F portfolio, value $47,184,042.

    13F-HR 0001534866-25-000007 filed by Boston Trust Walden Corp
    Filed (acceptance time not in the bulk data set), ingested

    • Boston Partners: 423,070 shares
    • Boston Trust Walden Corp: 1,215,624 shares

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

  7. period ended2024-12-31
    13F 1,405,556 shares
    Change vs previous 13F +865,917 shares

    0.05% of the 13F portfolio, value $52,125,440.

    13F-HR 0001534866-25-000002 filed by Boston Trust Walden Corp
    Filed (acceptance time not in the bulk data set), ingested

    • Boston Partners: 426,636 shares
    • Boston Trust Walden Corp: 978,920 shares

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

  8. period ended2024-09-30
    13F 539,639 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $26,188,681.

    13F-HR 0001534866-24-000014 filed by Boston Trust Walden Corp
    Filed (acceptance time not in the bulk data set), ingested

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