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RENAISSANCE TECHNOLOGIES LLC: AMPH position timeline

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

RENAISSANCE TECHNOLOGIES LLC held 525,100 AMPH shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 525,100 shares
    Change vs previous 13F -28,800 shares

    0.01% of the 13F portfolio, value $10,596,518.

    13F-HR 0001037389-26-000059 filed by RENAISSANCE TECHNOLOGIES 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 553,900 shares
    Change vs previous 13F +9,200 shares

    0.02% of the 13F portfolio, value $10,850,901.

    13F-HR 0001037389-26-000033 filed by RENAISSANCE TECHNOLOGIES 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 544,700 shares
    Change vs previous 13F -42,200 shares

    0.02% of the 13F portfolio, value $14,587,066.

    13F-HR 0001037389-26-000023 filed by RENAISSANCE TECHNOLOGIES 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 586,900 shares
    Change vs previous 13F +10,400 shares

    0.02% of the 13F portfolio, value $15,640,885.

    13F-HR 0001037389-25-000064 filed by RENAISSANCE TECHNOLOGIES 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 576,500 shares
    Change vs previous 13F +81,500 shares

    0.02% of the 13F portfolio, value $13,236,440.

    13F-HR 0001037389-25-000034 filed by RENAISSANCE TECHNOLOGIES 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 495,000 shares
    Change vs previous 13F -30,500 shares

    0.02% of the 13F portfolio, value $14,350,050.

    13F-HR 0001037389-25-000023 filed by RENAISSANCE TECHNOLOGIES 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 525,500 shares
    Change vs previous 13F +36,100 shares

    0.03% of the 13F portfolio, value $19,511,815.

    13F-HR 0001037389-25-000009 filed by RENAISSANCE TECHNOLOGIES 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 489,400 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $23,750,582.

    13F-HR 0001037389-24-000091 filed by RENAISSANCE TECHNOLOGIES LLC
    Filed (acceptance time not in the bulk data set), ingested

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