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TWO SIGMA INVESTMENTS, LP: AMPX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of TWO SIGMA INVESTMENTS, LP on AMPX, newest first. How the timeline and the estimate are built.

TWO SIGMA INVESTMENTS, LP held 4,318,630 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 4,318,630 shares
    Change vs previous 13F +812,555 shares

    0.05% of the 13F portfolio, value $59,856,212.

    13F-HR 0000899140-26-000855 filed by TWO SIGMA INVESTMENTS, LP
    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 3,506,075 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. 0.05% of the 13F portfolio, value $59,112,425.

    13F-HR 0000899140-26-000547 filed by TWO SIGMA INVESTMENTS, LP
    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 1,916,439 shares
    Change vs previous 13F -649,138 shares

    0.01% of the 13F portfolio, value $15,120,704.

    13F-HR 0000899140-26-000232 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,436,939 shares
    • TWO SIGMA ADVISERS, LP: 479,500 shares

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

  4. period ended2025-09-30
    13F 2,565,577 shares
    Change vs previous 13F +751,569 shares

    0.02% of the 13F portfolio, value $26,989,870.

    13F-HR 0000899140-25-001286 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,753,577 shares
    • TWO SIGMA ADVISERS, LP: 812,000 shares

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

  5. period ended2025-06-30
    13F 1,814,008 shares
    Change vs previous 13F +1,358,430 shares

    0.01% of the 13F portfolio, value $7,636,974.

    13F-HR 0000899140-25-000964 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,411,608 shares
    • TWO SIGMA ADVISERS, LP: 402,400 shares

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

  6. period ended2025-03-31
    13F 455,578 shares
    Change vs previous 13F -33,433 shares

    <0.01% of the 13F portfolio, value $1,220,949.

    13F-HR 0000899140-25-000680 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 411,478 shares
    • TWO SIGMA ADVISERS, LP: 44,100 shares

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

  7. period ended2024-12-31
    13F 489,011 shares
    Change vs previous 13F +384,224 shares

    <0.01% of the 13F portfolio, value $1,369,231.

    13F-HR 0000899140-25-000265 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 443,311 shares
    • TWO SIGMA ADVISERS, LP: 45,700 shares

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

  8. period ended2024-09-30
    13F 104,787 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $116,314.

    13F-HR 0000919574-24-006611 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

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