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Disclosery

Maple Rock Capital Partners Inc.: WDC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Maple Rock Capital Partners Inc. on WDC, newest first. How the timeline and the estimate are built.

Maple Rock Capital Partners Inc. held 1,357,834 WDC 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 1,357,834 shares
    Change vs previous 13F -42,600 shares

    17.01% of the 13F portfolio, value $867,275,732.

    13F-HR 0001658363-26-000007 filed by Maple Rock Capital Partners Inc.
    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 1,400,434 shares
    Change vs previous 13F -981,091 shares

    12.32% of the 13F portfolio, value $378,803,393.

    13F-HR 0001658363-26-000005 filed by Maple Rock Capital Partners Inc.
    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 2,381,525 shares
    Change vs previous 13F -207,800 shares

    13.55% of the 13F portfolio, value $410,265,312.

    13F-HR 0001658363-26-000003 filed by Maple Rock Capital Partners Inc.
    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 2,589,325 shares
    Change vs previous 13F -1,145,971 shares

    12.55% of the 13F portfolio, value $310,874,360.

    13F-HR 0001658363-25-000005 filed by Maple Rock Capital Partners Inc.
    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 3,735,296 shares
    Change vs previous 13F +545,500 shares

    11.94% of the 13F portfolio, value $239,021,591.

    13F-HR 0001085146-25-005275 filed by Maple Rock Capital Partners Inc.
    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 3,189,796 shares
    Change vs previous 13F +205,896 shares

    9.41% of the 13F portfolio, value $128,963,452.

    13F-HR 0001172661-25-002351 filed by Maple Rock Capital Partners Inc.
    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 2,983,900 shares
    Change vs previous 13F -303,500 shares

    12.94% of the 13F portfolio, value $177,929,957.

    13F-HR 0001172661-25-001210 filed by Maple Rock Capital Partners Inc.
    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 3,287,400 shares
    Change vs previous 13F not available

    12.76% of the 13F portfolio, value $224,496,546.

    13F-HR 0001172661-24-004812 filed by Maple Rock Capital Partners Inc.
    Filed (acceptance time not in the bulk data set), ingested

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