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VANGUARD GROUP INC: AMPG position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VANGUARD GROUP INC on AMPG, newest first. How the timeline and the estimate are built.

VANGUARD GROUP INC held 1,096,862 AMPG 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 1,096,862 shares
    Change vs previous 13F +170,220 shares

    <0.01% of the 13F portfolio, value $7,634,159.

    13F-HR 0002100119-26-001527 filed by VANGUARD CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 130,447 shares
    • Vanguard Global Advisers, LLC: 9,949 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 956,466 shares

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

  2. period ended2026-03-31
    13F/A 926,642 shares
    Change vs previous 13F +158,592 shares

    <0.01% of the 13F portfolio, value $1,760,619.

    13F-HR/A 0002100119-26-001311 filed by VANGUARD CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 111,257 shares
    • Vanguard Global Advisers, LLC: 9,949 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 805,436 shares

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

  3. period ended2025-12-31
    13F 768,050 shares
    Change vs previous 13F +462,579 shares

    <0.01% of the 13F portfolio, value $2,296,470.

    13F-HR 0000102909-26-000031 filed by VANGUARD GROUP INC
    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 305,471 shares
    Change vs previous 13F +83,524 shares

    <0.01% of the 13F portfolio, value $1,188,282.

    13F-HR 0000102909-25-000353 filed by VANGUARD GROUP INC
    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 221,947 shares
    Change vs previous 13F +27,411 shares

    <0.01% of the 13F portfolio, value $470,528.

    13F-HR 0001752724-25-185843 filed by VANGUARD GROUP INC
    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 194,536 shares
    Change vs previous 13F +90,707 shares

    <0.01% of the 13F portfolio, value $301,531.

    13F-HR 0001752724-25-099331 filed by VANGUARD GROUP INC
    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 103,829 shares
    Change vs previous 13F -153,419 shares

    <0.01% of the 13F portfolio, value $533,681.

    13F-HR 0001752724-25-022205 filed by VANGUARD GROUP INC
    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 257,248 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $200,653.

    13F-HR 0001752724-24-248565 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

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