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Disclosery

Channing Capital Management, LLC: ATI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Channing Capital Management, LLC on ATI, newest first. How the timeline and the estimate are built.

Channing Capital Management, LLC held 56,763 ATI shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 56,763 shares
    Change vs previous 13F -21,235 shares

    0.26% of the 13F portfolio, value $11,187,987.

    13F-HR 0001172661-26-002913 filed by Channing 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 77,998 shares
    Change vs previous 13F -27,321 shares

    0.29% of the 13F portfolio, value $11,345,589.

    13F-HR 0001172661-26-001835 filed by Channing 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 105,319 shares
    Change vs previous 13F -1,003,841 shares

    0.31% of the 13F portfolio, value $12,086,408.

    13F-HR 0001172661-26-000746 filed by Channing 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 1,109,160 shares
    Change vs previous 13F +282,529 shares

    2.38% of the 13F portfolio, value $90,219,074.

    13F-HR 0001172661-25-004659 filed by Channing 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 826,631 shares
    Change vs previous 13F -727,165 shares

    1.98% of the 13F portfolio, value $71,371,321.

    13F-HR 0001172661-25-003143 filed by Channing Capital Management, LLC
    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 1,553,796 shares
    Change vs previous 13F -120,665 shares

    2.44% of the 13F portfolio, value $80,844,006.

    13F-HR 0001172661-25-001815 filed by Channing Capital Management, LLC
    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 1,674,461 shares
    Change vs previous 13F +226,977 shares

    2.46% of the 13F portfolio, value $92,162,333.

    13F-HR 0001172661-25-000571 filed by Channing Capital Management, LLC
    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 1,447,484 shares
    Change vs previous 13F not available

    2.48% of the 13F portfolio, value $96,851,154.

    13F-HR 0001172661-24-004599 filed by Channing Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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