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Auto-Owners Insurance Co: MSM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Auto-Owners Insurance Co on MSM, newest first. How the timeline and the estimate are built.

Auto-Owners Insurance Co held 26,500 MSM shares at 2026-06-30 per its 13F-HR filed 2026-07-15.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 26,500 shares
    Change vs previous 13F -12,200 shares

    0.07% of the 13F portfolio, value $3,152,175.

    13F-HR 0001964189-26-000004 filed by Auto-Owners Insurance Co
    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 38,700 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $3,570,849.

    13F-HR 0001964189-26-000003 filed by Auto-Owners Insurance Co
    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/A 38,700 shares
    Change vs previous 13F +12,200 shares

    0.07% of the 13F portfolio, value $3,254,670.

    13F-HR/A 0001964189-26-000002 filed by Auto-Owners Insurance Co
    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/A 26,500 shares
    Change vs previous 13F -319,500 shares

    0.06% of the 13F portfolio, value $2,441,710.

    13F-HR/A 0001964189-25-000005 filed by Auto-Owners Insurance Co
    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 346,000 shares
    Change vs previous 13F +317,613 shares

    0.66% of the 13F portfolio, value $29,416,920.

    13F-HR 0001964189-25-000002 filed by Auto-Owners Insurance Co
    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 28,387 shares
    Change vs previous 13F -329,813 shares

    0.1% of the 13F portfolio, value $3,644,976.

    13F-HR 0001964189-25-000001 filed by Auto-Owners Insurance Co
    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 358,200 shares
    Change vs previous 13F +12,200 shares

    0.61% of the 13F portfolio, value $26,753,958.

    13F-HR 0001964188-25-000003 filed by Auto-Owners Insurance Co
    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 346,000 shares
    Change vs previous 13F not available

    0.73% of the 13F portfolio, value $29,776,760.

    13F-HR 0001964189-24-000005 filed by Auto-Owners Insurance Co
    Filed (acceptance time not in the bulk data set), ingested

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