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CASTLEARK MANAGEMENT LLC: SPIB position timeline

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

CASTLEARK MANAGEMENT LLC held 2,688,380 SPIB 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 2,688,380 shares
    Change vs previous 13F 0 shares

    2.43% of the 13F portfolio, value $89,953,195.

    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 2,688,380 shares
    Change vs previous 13F +169,010 shares

    2.98% of the 13F portfolio, value $90,168,265.

    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 2,519,370 shares
    Change vs previous 13F 0 shares

    2.5% of the 13F portfolio, value $85,179,900.

    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 2,519,370 shares
    Change vs previous 13F 0 shares

    2.39% of the 13F portfolio, value $85,381,449.

    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 2,519,370 shares
    Change vs previous 13F +473,790 shares

    2.54% of the 13F portfolio, value $84,600,445.

    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 2,045,580 shares
    Change vs previous 13F -1,712,080 shares

    2.36% of the 13F portfolio, value $67,995,079.

    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 3,757,660 shares
    Change vs previous 13F not available

    4.29% of the 13F portfolio, value $123,100,942.

    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).