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Disclosery

SRB CORP: MSFT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SRB CORP on MSFT, newest first. How the timeline and the estimate are built.

SRB CORP held 568,388 MSFT 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 568,388 shares
    Change vs previous 13F -7,161 shares

    11.4% of the 13F portfolio, value $212,020,091.

    13F-HR 0000904454-26-000456 filed by SRB CORP
    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 575,549 shares
    Change vs previous 13F -117,374 shares

    13.09% of the 13F portfolio, value $213,050,974.

    13F-HR 0000904454-26-000289 filed by SRB CORP
    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 692,923 shares
    Change vs previous 13F 0 shares

    18.39% of the 13F portfolio, value $335,111,422.

    13F-HR 0000904454-26-000102 filed by SRB CORP
    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 692,923 shares
    Change vs previous 13F 0 shares

    20.57% of the 13F portfolio, value $358,899,468.

    13F-HR 0000904454-25-000595 filed by SRB CORP
    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 692,923 shares
    Change vs previous 13F -89 shares

    20.68% of the 13F portfolio, value $344,666,830.

    13F-HR 0000904454-25-000420 filed by SRB CORP
    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 693,012 shares
    Change vs previous 13F -55,715 shares

    16.97% of the 13F portfolio, value $260,149,775.

    13F-HR 0000904454-25-000270 filed by SRB CORP
    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 748,727 shares
    Change vs previous 13F 0 shares

    18.1% of the 13F portfolio, value $315,588,431.

    13F-HR 0000904454-25-000128 filed by SRB CORP
    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 748,727 shares
    Change vs previous 13F not available

    18.06% of the 13F portfolio, value $322,177,228.

    13F-HR 0000904454-24-000609 filed by SRB CORP
    Filed (acceptance time not in the bulk data set), ingested

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