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SEI INVESTMENTS CO: ONTO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SEI INVESTMENTS CO on ONTO, newest first. How the timeline and the estimate are built.

SEI INVESTMENTS CO held 58,602 ONTO shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 58,602 shares
    Change vs previous 13F -13,515 shares

    0.02% of the 13F portfolio, value $22,178,121.

    13F-HR 0002048251-26-006553 filed by SEI INVESTMENTS CO
    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 72,117 shares
    Change vs previous 13F +28,941 shares

    0.01% of the 13F portfolio, value $14,789,561.

    13F-HR 0002048251-26-003739 filed by SEI INVESTMENTS CO
    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 43,176 shares
    Change vs previous 13F +24,448 shares

    0.01% of the 13F portfolio, value $6,815,982.

    13F-HR 0000350894-26-000005 filed by SEI INVESTMENTS CO
    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 18,728 shares
    Change vs previous 13F -6,257 shares

    <0.01% of the 13F portfolio, value $2,420,166.

    13F-HR 0002048251-25-002343 filed by SEI INVESTMENTS CO
    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 24,985 shares
    Change vs previous 13F -67,336 shares

    <0.01% of the 13F portfolio, value $2,521,644.

    13F-HR 0001041062-25-000162 filed by SEI INVESTMENTS CO
    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/A 92,321 shares
    Change vs previous 13F -111,858 shares

    0.01% of the 13F portfolio, value $11,202,220.

    13F-HR/A 0001041062-25-000106 filed by SEI INVESTMENTS CO
    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 204,179 shares
    Change vs previous 13F +8,086 shares

    0.04% of the 13F portfolio, value $34,030,638.

    13F-HR 0001041062-25-000019 filed by SEI INVESTMENTS CO
    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 196,093 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $40,701,195.

    13F-HR 0001041062-24-000165 filed by SEI INVESTMENTS CO
    Filed (acceptance time not in the bulk data set), ingested

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