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MILLENNIUM MANAGEMENT LLC: AMPX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MILLENNIUM MANAGEMENT LLC on AMPX, newest first. How the timeline and the estimate are built.

MILLENNIUM MANAGEMENT LLC held 1,208,017 AMPX 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 1,208,017 shares
    Change vs previous 13F +172,779 shares

    0.01% of the 13F portfolio, value $16,743,116.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT LLC
    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 1,035,238 shares
    Change vs previous 13F -50,032 shares

    0.01% of the 13F portfolio, value $17,454,113.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT LLC
    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 1,085,270 shares
    Change vs previous 13F +497,438 shares

    0.01% of the 13F portfolio, value $8,562,780.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT LLC
    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 587,832 shares
    Change vs previous 13F -3,028,548 shares

    <0.01% of the 13F portfolio, value $6,183,993.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT LLC
    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 3,616,380 shares
    Change vs previous 13F +2,220,367 shares

    0.01% of the 13F portfolio, value $15,224,960.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT LLC
    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 1,396,013 shares
    Change vs previous 13F +678,442 shares

    <0.01% of the 13F portfolio, value $3,741,315.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT LLC
    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 717,571 shares
    Change vs previous 13F +717,571 shares

    <0.01% of the 13F portfolio, value $2,009,199.

    13F-HR 0001273087-25-000015 filed by MILLENNIUM MANAGEMENT LLC
    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 0 shares
    Change vs previous 13F not available

    13F-HR 0001273087-24-000118 filed by MILLENNIUM MANAGEMENT LLC
    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.