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Disclosery

Grand Alliance Asset Management Ltd: WDC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Grand Alliance Asset Management Ltd on WDC, newest first. How the timeline and the estimate are built.

Grand Alliance Asset Management Ltd held 16,000 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 16,000 shares
    Change vs previous 13F -20,000 shares

    6.14% of the 13F portfolio, value $10,219,520.

    13F-HR 0000905148-26-003674 filed by Grand Alliance Asset Management Ltd
    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 36,000 shares
    Change vs previous 13F -15,000 shares

    5.9% of the 13F portfolio, value $9,737,640.

    13F-HR 0000905148-26-002314 filed by Grand Alliance Asset Management Ltd
    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 51,000 shares
    Change vs previous 13F +34,000 shares

    6.39% of the 13F portfolio, value $8,785,770.

    13F-HR 0000905148-26-000802 filed by Grand Alliance Asset Management Ltd
    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 17,000 shares
    Change vs previous 13F not available

    1.26% of the 13F portfolio, value $2,041,020.

    13F-HR 0000905148-25-003971 filed by Grand Alliance Asset Management Ltd
    Filed (acceptance time not in the bulk data set), ingested

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