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SEI INVESTMENTS CO: OII position timeline

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

SEI INVESTMENTS CO held 314,092 OII 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 314,092 shares
    Change vs previous 13F -126,599 shares

    0.01% of the 13F portfolio, value $12,726,998.

    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 440,691 shares
    Change vs previous 13F +21,905 shares

    0.01% of the 13F portfolio, value $15,631,312.

    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 418,786 shares
    Change vs previous 13F -47,339 shares

    0.01% of the 13F portfolio, value $10,063,422.

    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 466,125 shares
    Change vs previous 13F +6,392 shares

    0.01% of the 13F portfolio, value $11,550,581.

    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 459,733 shares
    Change vs previous 13F +34,703 shares

    0.01% of the 13F portfolio, value $9,525,662.

    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 425,030 shares
    Change vs previous 13F +38,766 shares

    0.01% of the 13F portfolio, value $9,269,906.

    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 386,264 shares
    Change vs previous 13F +7,412 shares

    0.01% of the 13F portfolio, value $10,073,774.

    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 378,852 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $9,422,043.

    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).