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Illinois Municipal Retirement Fund: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Illinois Municipal Retirement Fund on BRK-B, newest first. How the timeline and the estimate are built.

Illinois Municipal Retirement Fund held 122,816 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 122,816 shares
    Change vs previous 13F +189 shares

    0.69% of the 13F portfolio, value $61,455,898.

    13F-HR 0001541910-26-000008 filed by Illinois Municipal Retirement Fund
    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 122,627 shares
    Change vs previous 13F -16,399 shares

    0.75% of the 13F portfolio, value $58,762,858.

    13F-HR 0001541910-26-000007 filed by Illinois Municipal Retirement Fund
    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 139,026 shares
    Change vs previous 13F +16,091 shares

    0.88% of the 13F portfolio, value $69,881,419.

    13F-HR 0001541910-26-000006 filed by Illinois Municipal Retirement Fund
    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 122,935 shares
    Change vs previous 13F -2,497 shares

    0.79% of the 13F portfolio, value $61,804,342.

    13F-HR 0001541910-25-000010 filed by Illinois Municipal Retirement Fund
    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 125,432 shares
    Change vs previous 13F +13,228 shares

    0.83% of the 13F portfolio, value $60,931,103.

    13F-HR 0001541910-25-000007 filed by Illinois Municipal Retirement Fund
    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 112,204 shares
    Change vs previous 13F -14,169 shares

    0.87% of the 13F portfolio, value $59,757,606.

    13F-HR 0001541910-25-000003 filed by Illinois Municipal Retirement Fund
    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 126,373 shares
    Change vs previous 13F +1,136 shares

    0.81% of the 13F portfolio, value $57,282,353.

    13F-HR 0001541910-25-000002 filed by Illinois Municipal Retirement Fund
    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 125,237 shares
    Change vs previous 13F not available

    0.82% of the 13F portfolio, value $57,641,582.

    13F-HR 0001541910-24-000007 filed by Illinois Municipal Retirement Fund
    Filed (acceptance time not in the bulk data set), ingested

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