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STATE OF MICHIGAN RETIREMENT SYSTEM: WDC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of STATE OF MICHIGAN RETIREMENT SYSTEM on WDC, newest first. How the timeline and the estimate are built.

STATE OF MICHIGAN RETIREMENT SYSTEM held 88,257 WDC shares at 2026-06-30 per its 13F-HR filed 2026-07-30.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 88,257 shares
    Change vs previous 13F -14,400 shares

    0.25% of the 13F portfolio, value $56,371,511.

    13F-HR 0000762152-26-000012 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 102,657 shares
    Change vs previous 13F -1,000 shares

    0.15% of the 13F portfolio, value $27,767,692.

    13F-HR 0000762152-26-000009 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 103,657 shares
    Change vs previous 13F -6,100 shares

    0.09% of the 13F portfolio, value $17,856,991.

    13F-HR 0000762152-26-000007 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 109,757 shares
    Change vs previous 13F -1,000 shares

    0.06% of the 13F portfolio, value $13,177,425.

    13F-HR 0000762152-25-000014 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 110,757 shares
    Change vs previous 13F +5,600 shares

    0.04% of the 13F portfolio, value $7,087,340.

    13F-HR 0000762152-25-000008 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 105,157 shares
    Change vs previous 13F +500 shares

    0.02% of the 13F portfolio, value $4,251,498.

    13F-HR 0000762152-25-000005 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 104,657 shares
    Change vs previous 13F +15,700 shares

    0.03% of the 13F portfolio, value $6,240,697.

    13F-HR 0000762152-25-000003 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    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 88,957 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $6,074,874.

    13F-HR 0000762152-24-000013 filed by STATE OF MICHIGAN RETIREMENT SYSTEM
    Filed (acceptance time not in the bulk data set), ingested

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