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CASTLEARK MANAGEMENT LLC: VMBS position timeline

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

CASTLEARK MANAGEMENT LLC held 1,487,800 VMBS 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 1,487,800 shares
    Change vs previous 13F 0 shares

    1.88% of the 13F portfolio, value $69,643,918.

    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 1,487,800 shares
    Change vs previous 13F -217,740 shares

    2.31% of the 13F portfolio, value $69,852,210.

    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 1,705,540 shares
    Change vs previous 13F 0 shares

    2.36% of the 13F portfolio, value $80,296,823.

    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 1,705,540 shares
    Change vs previous 13F 0 shares

    2.25% of the 13F portfolio, value $80,092,158.

    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 1,705,540 shares
    Change vs previous 13F +96,460 shares

    2.38% of the 13F portfolio, value $79,034,724.

    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 1,609,080 shares
    Change vs previous 13F 0 shares

    2.58% of the 13F portfolio, value $74,516,495.

    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 1,609,080 shares
    Change vs previous 13F not available

    2.54% of the 13F portfolio, value $72,955,687.

    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).