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Disclosery

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND: ATI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND on ATI, newest first. How the timeline and the estimate are built.

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND held 178,880 ATI 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 178,880 shares
    Change vs previous 13F +91,838 shares

    0.05% of the 13F portfolio, value $35,257,248.

    13F-HR 0001535845-26-000007 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    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 87,042 shares
    Change vs previous 13F +33,580 shares

    0.02% of the 13F portfolio, value $12,661,129.

    13F-HR 0001535845-26-000004 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    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 53,462 shares
    Change vs previous 13F +16,900 shares

    0.01% of the 13F portfolio, value $6,135,299.

    13F-HR 0001535845-26-000002 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    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 36,562 shares
    Change vs previous 13F +36,562 shares

    0.01% of the 13F portfolio, value $2,973,953.

    13F-HR 0001535845-25-000013 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -24,031 shares

    13F-HR 0001535845-25-000006 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  6. period ended2024-12-31
    13F 24,031 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,322,666.

    13F-HR 0001535845-25-000004 filed by HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
    Filed (acceptance time not in the bulk data set), ingested

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