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DIMENSIONAL FUND ADVISORS LP: AMS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DIMENSIONAL FUND ADVISORS LP on AMS, newest first. How the timeline and the estimate are built.

DIMENSIONAL FUND ADVISORS LP held 102,140 AMS shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 102,140 shares
    Change vs previous 13F -102,980 shares

    <0.01% of the 13F portfolio, value $161,381.

    13F-HR 0000354204-26-000866 filed by DIMENSIONAL FUND ADVISORS 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 205,120 shares
    Change vs previous 13F -1,294 shares

    <0.01% of the 13F portfolio, value $297,424.

    13F-HR 0000354204-26-000581 filed by DIMENSIONAL FUND ADVISORS 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 206,414 shares
    Change vs previous 13F -3,545 shares

    <0.01% of the 13F portfolio, value $435,534.

    13F-HR 0000354204-26-000347 filed by DIMENSIONAL FUND ADVISORS LP
    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 209,959 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $587,885.

    13F-HR 0000354204-25-001337 filed by DIMENSIONAL FUND ADVISORS LP
    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 209,959 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $506,001.

    13F-HR 0000354204-25-001097 filed by DIMENSIONAL FUND ADVISORS LP
    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 209,959 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $583,686.

    13F-HR 0000354204-25-000866 filed by DIMENSIONAL FUND ADVISORS LP
    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 209,959 shares
    Change vs previous 13F +603 shares

    <0.01% of the 13F portfolio, value $669,769.

    13F-HR 0000354204-25-000528 filed by DIMENSIONAL FUND ADVISORS LP
    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 209,356 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $638,536.

    13F-HR 0000354204-24-004773 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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