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Disclosery

Channing Capital Management, LLC: ONTO position timeline

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

Channing Capital Management, LLC held 26,993 ONTO 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 26,993 shares
    Change vs previous 13F -333,109 shares

    0.24% of the 13F portfolio, value $10,215,501.

    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 360,102 shares
    Change vs previous 13F -158,780 shares

    1.89% of the 13F portfolio, value $73,846,117.

    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 518,882 shares
    Change vs previous 13F +388,883 shares

    2.11% of the 13F portfolio, value $81,910,713.

    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 129,999 shares
    Change vs previous 13F not available

    0.44% of the 13F portfolio, value $16,798,471.

    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).