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CASTLEARK MANAGEMENT LLC: SEI position timeline

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

CASTLEARK MANAGEMENT LLC held 125,806 SEI 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 125,806 shares
    Change vs previous 13F +31,550 shares

    0.27% of the 13F portfolio, value $10,122,351.

    13F-HR 0001106832-26-000004 filed by CASTLEARK 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 94,256 shares
    Change vs previous 13F -56,740 shares

    0.18% of the 13F portfolio, value $5,326,407.

    13F-HR 0001106832-26-000003 filed by CASTLEARK 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 150,996 shares
    Change vs previous 13F -42,930 shares

    0.2% of the 13F portfolio, value $6,941,286.

    13F-HR 0001106832-26-000001 filed by CASTLEARK 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 193,926 shares
    Change vs previous 13F +116,896 shares

    0.22% of the 13F portfolio, value $7,751,222.

    13F-HR 0001106832-25-000008 filed by CASTLEARK 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 77,030 shares
    Change vs previous 13F +60 shares

    0.07% of the 13F portfolio, value $2,179,179.

    13F-HR 0001106832-25-000006 filed by CASTLEARK 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 76,970 shares
    Change vs previous 13F -54,660 shares

    0.06% of the 13F portfolio, value $1,674,867.

    13F-HR 0001106832-25-000004 filed by CASTLEARK 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 131,630 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $3,788,311.

    13F-HR 0001106832-25-000001 filed by CASTLEARK MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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