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JPMORGAN CHASE & CO: AMPX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of JPMORGAN CHASE & CO on AMPX, newest first. How the timeline and the estimate are built.

JPMORGAN CHASE & CO held 123,377 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 123,377 shares
    Change vs previous 13F -1,092,808 shares

    <0.01% of the 13F portfolio, value $1,743,106.

    13F-HR 0000019617-26-000325 filed by JPMORGAN CHASE & CO
    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/A 1,216,185 shares
    Change vs previous 13F +1,132,736 shares

    <0.01% of the 13F portfolio, value $17,902,242.

    13F-HR/A 0000019617-26-000225 filed by JPMORGAN CHASE & CO
    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 83,449 shares
    Change vs previous 13F -204,267 shares

    <0.01% of the 13F portfolio, value $658,413.

    13F-HR 0000019617-26-000083 filed by JPMORGAN CHASE & CO
    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/A 287,716 shares
    Change vs previous 13F -729,501 shares

    <0.01% of the 13F portfolio, value $3,026,773.

    13F-HR/A 0000019617-25-001093 filed by JPMORGAN CHASE & CO
    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 1,017,217 shares
    Change vs previous 13F +1,008,854 shares

    <0.01% of the 13F portfolio, value $4,282,484.

    13F-HR 0000919185-25-000009 filed by JPMORGAN CHASE & CO
    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 8,363 shares
    Change vs previous 13F +853 shares

    <0.01% of the 13F portfolio, value $22,413.

    13F-HR 0000019617-25-000443 filed by JPMORGAN CHASE & CO
    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 7,510 shares
    Change vs previous 13F -19,531 shares

    <0.01% of the 13F portfolio, value $21,028.

    13F-HR 0000019617-25-000217 filed by JPMORGAN CHASE & CO
    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/A 27,041 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $30,015.

    13F-HR/A 0000019617-24-000675 filed by JPMORGAN CHASE & CO
    Filed (acceptance time not in the bulk data set), ingested

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