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CASTLEARK MANAGEMENT LLC: LRCX position timeline

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

CASTLEARK MANAGEMENT LLC held 283,808 LRCX 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 283,808 shares
    Change vs previous 13F -52,932 shares

    3.32% of the 13F portfolio, value $122,982,521.

    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 336,740 shares
    Change vs previous 13F -36,136 shares

    2.38% of the 13F portfolio, value $71,947,868.

    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 372,876 shares
    Change vs previous 13F -131,244 shares

    1.87% of the 13F portfolio, value $63,828,914.

    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 504,120 shares
    Change vs previous 13F -18,530 shares

    1.89% of the 13F portfolio, value $67,501,668.

    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 522,650 shares
    Change vs previous 13F +295,712 shares

    1.53% of the 13F portfolio, value $50,874,751.

    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 226,938 shares
    Change vs previous 13F +105,658 shares

    0.57% of the 13F portfolio, value $16,498,393.

    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 121,280 shares
    Change vs previous 13F not available

    0.31% of the 13F portfolio, value $8,760,054.

    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).