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CASTLEARK MANAGEMENT LLC: FAST position timeline

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

CASTLEARK MANAGEMENT LLC held 171,420 FAST 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 171,420 shares
    Change vs previous 13F +22,730 shares

    0.22% of the 13F portfolio, value $8,233,303.

    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 148,690 shares
    Change vs previous 13F +141,770 shares

    0.23% of the 13F portfolio, value $6,899,216.

    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 6,920 shares
    Change vs previous 13F -122,900 shares

    0.01% of the 13F portfolio, value $277,700.

    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 129,820 shares
    Change vs previous 13F +122,900 shares

    0.18% of the 13F portfolio, value $6,366,373.

    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 6,920 shares
    Change vs previous 13F +3,460 shares

    0.01% of the 13F portfolio, value $290,640.

    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 3,460 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $268,323.

    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 3,460 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $248,809.

    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 3,460 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $247,113.

    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).