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Hood River Capital Management LLC: AMPX position timeline

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

Hood River Capital Management LLC held 1,412,516 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 1,412,516 shares
    Change vs previous 13F +463,369 shares

    0.14% of the 13F portfolio, value $19,577,472.

    13F-HR 0001214659-26-010150 filed by Hood River Capital 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 949,147 shares
    Change vs previous 13F +139,403 shares

    0.16% of the 13F portfolio, value $16,002,618.

    13F-HR 0001214659-26-006258 filed by Hood River Capital 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 809,744 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $6,388,880.

    13F-HR 0001214659-26-001836 filed by Hood River Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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