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CASTLEARK MANAGEMENT LLC: NRG position timeline

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

CASTLEARK MANAGEMENT LLC held 8,410 NRG 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 8,410 shares
    Change vs previous 13F +7,100 shares

    0.03% of the 13F portfolio, value $1,228,365.

    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 1,310 shares
    Change vs previous 13F -750 shares

    0.01% of the 13F portfolio, value $191,443.

    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 2,060 shares
    Change vs previous 13F +1,340 shares

    0.01% of the 13F portfolio, value $328,034.

    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 720 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $116,604.

    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 720 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $115,618.

    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).