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CASTLEARK MANAGEMENT LLC: VST position timeline

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

CASTLEARK MANAGEMENT LLC held 4,160 VST 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 4,160 shares
    Change vs previous 13F 0 shares

    0.02% of the 13F portfolio, value $659,901.

    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 4,160 shares
    Change vs previous 13F -7,870 shares

    0.02% of the 13F portfolio, value $625,373.

    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 12,030 shares
    Change vs previous 13F -38,880 shares

    0.06% of the 13F portfolio, value $1,940,800.

    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 50,910 shares
    Change vs previous 13F -1,485 shares

    0.28% of the 13F portfolio, value $9,974,287.

    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 52,395 shares
    Change vs previous 13F -44,580 shares

    0.31% of the 13F portfolio, value $10,154,675.

    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 96,975 shares
    Change vs previous 13F +36,315 shares

    0.39% of the 13F portfolio, value $11,388,744.

    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 60,660 shares
    Change vs previous 13F +41,670 shares

    0.29% of the 13F portfolio, value $8,363,194.

    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).

  8. period ended2024-09-30
    13F 18,990 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $2,251,075.

    13F-HR 0001106832-24-000008 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).