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CHECK CAPITAL MANAGEMENT INC/CA: SIRI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CHECK CAPITAL MANAGEMENT INC/CA on SIRI, newest first. How the timeline and the estimate are built.

CHECK CAPITAL MANAGEMENT INC/CA held 2,927,799 SIRI shares at 2026-06-30 per its 13F-HR/A filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 2,927,799 shares
    Change vs previous 13F -14,796 shares

    4.89% of the 13F portfolio, value $86,487,194.

    13F-HR/A 0001032814-26-000006 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 2,942,595 shares
    Change vs previous 13F +59,095 shares

    4.19% of the 13F portfolio, value $67,915,104.

    13F-HR 0001032814-26-000004 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 2,883,500 shares
    Change vs previous 13F +821,657 shares

    3.45% of the 13F portfolio, value $57,655,582.

    13F-HR 0001032814-26-000001 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 2,061,843 shares
    Change vs previous 13F +895,247 shares

    3.04% of the 13F portfolio, value $47,989,397.

    13F-HR 0001032814-25-000007 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,166,596 shares
    Change vs previous 13F -5,748 shares

    1.77% of the 13F portfolio, value $26,796,708.

    13F-HR 0001032814-25-000005 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,172,344 shares
    Change vs previous 13F +26,613 shares

    1.72% of the 13F portfolio, value $26,430,500.

    13F-HR 0001032814-25-000003 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,145,731 shares
    Change vs previous 13F +981,517 shares

    1.73% of the 13F portfolio, value $26,122,675.

    13F-HR 0001032814-25-000002 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 164,214 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $3,883,661.

    13F-HR 0001032814-24-000011 filed by CHECK CAPITAL MANAGEMENT INC/CA
    Filed (acceptance time not in the bulk data set), ingested

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