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Baird Financial Group, Inc.: AMPX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Baird Financial Group, Inc. on AMPX, newest first. How the timeline and the estimate are built.

Baird Financial Group, Inc. held 1,324,909 AMPX shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,324,909 shares
    Change vs previous 13F -260,189 shares

    0.03% of the 13F portfolio, value $18,363,239.

    13F-HR 0001648711-26-000006 filed by Baird Financial Group, 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 1,585,098 shares
    Change vs previous 13F +811,670 shares

    0.04% of the 13F portfolio, value $26,724,752.

    13F-HR 0001648711-26-000004 filed by Baird Financial Group, 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 773,428 shares
    Change vs previous 13F -103,499 shares

    0.01% of the 13F portfolio, value $6,102,347.

    13F-HR 0001648711-26-000002 filed by Baird Financial Group, 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 876,927 shares
    Change vs previous 13F -123,784 shares

    0.01% of the 13F portfolio, value $9,225,272.

    13F-HR 0001648711-25-000026 filed by Baird Financial Group, 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 1,000,711 shares
    Change vs previous 13F +500,212 shares

    0.01% of the 13F portfolio, value $4,212,993.

    13F-HR 0001083831-25-000011 filed by Baird Financial Group, 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 500,499 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,341,337.

    13F-HR 0001648711-25-000019 filed by Baird Financial Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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