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DIMENSIONAL FUND ADVISORS LP: ACHC position timeline

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

DIMENSIONAL FUND ADVISORS LP held 4,013,718 ACHC shares at 2026-06-30 per its 13F-HR filed 2026-08-11, and reported 4,698,457 shares, 5%, in a 13G filed 2026-10-08.

Estimated current stake: 4,698,457 shares, 5% of the class

Estimated from 13G of 2026-10-08. As of 2026-09-30, 13G 0000354204-26-001066.

Shares are the reporting group's aggregate and may include entities that do not file a 13F.

Percent of portfolio stays on the 13F for 2026-06-30.

  1. event date2026-09-30
    13G 4,698,457 shares
    Share basis changed not comparable

    5% of the class. Different basis (group aggregate from 13G).

    13G 0000354204-26-001066 filed by DIMENSIONAL FUND ADVISORS LP
    Accepted , ingested

    A 13D/G states the aggregate of its reporting persons, which may include entities that do not file a 13F.

  2. period ended2026-06-30
    13F 4,013,718 shares
    Change vs previous 13F +1,431,971 shares

    0.02% of the 13F portfolio, value $118,511,090.

    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).

  3. period ended2026-03-31
    13F 2,581,747 shares
    Change vs previous 13F -202,892 shares

    0.01% of the 13F portfolio, value $60,383,734.

    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).

  4. period ended2025-12-31
    13F 2,784,639 shares
    Change vs previous 13F +5,383 shares

    0.01% of the 13F portfolio, value $39,516,418.

    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).

  5. period ended2025-09-30
    13F 2,779,256 shares
    Change vs previous 13F -85,795 shares

    0.01% of the 13F portfolio, value $68,812,799.

    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).

  6. period ended2025-06-30
    13F 2,865,051 shares
    Change vs previous 13F -69,039 shares

    0.02% of the 13F portfolio, value $65,004,026.

    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).

  7. period ended2025-03-31
    13F 2,934,090 shares
    Change vs previous 13F -248,639 shares

    0.02% of the 13F portfolio, value $88,959,631.

    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).

  8. period ended2024-12-31
    13F 3,182,729 shares
    Change vs previous 13F +486,395 shares

    0.03% of the 13F portfolio, value $126,189,295.

    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).

  9. period ended2024-09-30
    13F 2,696,334 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $170,973,550.

    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).