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Disclosery

MARSHALL WACE, LLP: KLAC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MARSHALL WACE, LLP on KLAC, newest first. How the timeline and the estimate are built.

MARSHALL WACE, LLP held 291,283 KLAC shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 291,283 shares
    Change vs previous 13F +199,722 shares

    0.07% of the 13F portfolio, value $87,880,959.

    13F-HR 0001318757-26-000010 filed by MARSHALL WACE, LLP
    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 91,561 shares
    Change vs previous 13F +90,722 shares

    0.14% of the 13F portfolio, value $134,815,332.

    13F-HR 0001318757-26-000005 filed by MARSHALL WACE, LLP
    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 839 shares
    Change vs previous 13F +839 shares

    <0.01% of the 13F portfolio, value $1,019,452.

    13F-HR 0001318757-26-000003 filed by MARSHALL WACE, LLP
    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 0 shares
    Change vs previous 13F -115,000 shares

    13F-HR 0001318757-25-000046 filed by MARSHALL WACE, LLP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  5. period ended2025-06-30
    13F 115,000 shares
    Change vs previous 13F +115,000 shares

    0.12% of the 13F portfolio, value $103,010,100.

    13F-HR 0001318757-25-000034 filed by MARSHALL WACE, LLP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2024-12-31
    13F 0 shares
    Change vs previous 13F -27,028 shares

    13F-HR 0002048047-25-000005 filed by MARSHALL WACE, LLP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  7. period ended2024-09-30
    13F 27,028 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $20,930,753.

    13F-HR 0001318757-24-000018 filed by MARSHALL WACE, LLP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).