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TWO SIGMA INVESTMENTS, LP: AMPH position timeline

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

TWO SIGMA INVESTMENTS, LP held 248,115 AMPH 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 248,115 shares
    Change vs previous 13F +109,967 shares

    <0.01% of the 13F portfolio, value $5,006,961.

    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 138,148 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. <0.01% of the 13F portfolio, value $2,706,319.

    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 98,678 shares
    Change vs previous 13F -22,800 shares

    <0.01% of the 13F portfolio, value $2,642,597.

    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: 98,678 shares
    • TWO SIGMA ADVISERS, LP: 0 shares

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

  4. period ended2025-09-30
    13F 121,478 shares
    Change vs previous 13F -53,852 shares

    <0.01% of the 13F portfolio, value $3,237,389.

    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: 98,678 shares
    • TWO SIGMA ADVISERS, LP: 22,800 shares

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

  5. period ended2025-06-30
    13F 175,330 shares
    Change vs previous 13F +15,302 shares

    <0.01% of the 13F portfolio, value $4,025,577.

    13F-HR 0000899140-25-000953 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 80,130 shares
    • TWO SIGMA ADVISERS, LP: 95,200 shares

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

  6. period ended2025-03-31
    13F 160,028 shares
    Change vs previous 13F -24,056 shares

    0.01% of the 13F portfolio, value $4,639,212.

    13F-HR 0000899140-25-000679 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 75,328 shares
    • TWO SIGMA ADVISERS, LP: 84,700 shares

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

  7. period ended2024-12-31
    13F 184,084 shares
    Change vs previous 13F -13,014 shares

    0.01% of the 13F portfolio, value $6,835,039.

    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: 98,184 shares
    • TWO SIGMA ADVISERS, LP: 85,900 shares

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

  8. period ended2024-09-30
    13F 197,098 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $9,565,166.

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

    • TWO SIGMA INVESTMENTS, LP: 98,798 shares
    • TWO SIGMA ADVISERS, LP: 98,300 shares

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