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BRIDGEWAY CAPITAL MANAGEMENT, LLC: AMPH position timeline

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

BRIDGEWAY CAPITAL MANAGEMENT, LLC held 298,954 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 298,954 shares
    Change vs previous 13F -31,503 shares

    0.11% of the 13F portfolio, value $6,032,892.

    13F-HR 0001107261-26-000006 filed by BRIDGEWAY 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 330,457 shares
    Change vs previous 13F +6,908 shares

    0.13% of the 13F portfolio, value $6,473,653.

    13F-HR 0001107261-26-000004 filed by BRIDGEWAY 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 323,549 shares
    Change vs previous 13F +11,212 shares

    0.18% of the 13F portfolio, value $8,664,642.

    13F-HR 0001107261-26-000002 filed by BRIDGEWAY CAPITAL 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 312,337 shares
    Change vs previous 13F +227,225 shares

    0.18% of the 13F portfolio, value $8,323,781.

    13F-HR 0001107261-25-000004 filed by BRIDGEWAY CAPITAL 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 85,112 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $1,954,172.

    13F-HR 0001085146-25-005074 filed by BRIDGEWAY CAPITAL MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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