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Disclosery

Central Securities Corp: MSI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Central Securities Corp on MSI, newest first. How the timeline and the estimate are built.

Central Securities Corp held 140,000 MSI shares at 2026-06-30 per its 13F-HR filed 2026-08-10.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 140,000 shares
    Change vs previous 13F 0 shares

    4.34% of the 13F portfolio, value $58,140,600.

    13F-HR 0001209992-26-000048 filed by Central Securities 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 140,000 shares
    Change vs previous 13F 0 shares

    5.01% of the 13F portfolio, value $60,755,800.

    13F-HR 0001209992-26-000035 filed by Central Securities 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 140,000 shares
    Change vs previous 13F 0 shares

    4.31% of the 13F portfolio, value $53,664,800.

    13F-HR 0001209992-26-000018 filed by Central Securities 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 140,000 shares
    Change vs previous 13F 0 shares

    5.27% of the 13F portfolio, value $64,020,600.

    13F-HR 0001209992-25-000010 filed by Central Securities 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 140,000 shares
    Change vs previous 13F -5,000 shares

    5.19% of the 13F portfolio, value $58,864,400.

    13F-HR 0000018748-25-000009 filed by Central Securities 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 145,000 shares
    Change vs previous 13F 0 shares

    6.04% of the 13F portfolio, value $63,482,450.

    13F-HR 0000018748-25-000002 filed by Central Securities 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 145,000 shares
    Change vs previous 13F 0 shares

    6.4% of the 13F portfolio, value $67,023,350.

    13F-HR 0001006975-25-000005 filed by Central Securities 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 145,000 shares
    Change vs previous 13F not available

    6.33% of the 13F portfolio, value $65,196,350.

    13F-HR 0000018748-24-000014 filed by Central Securities Corp
    Filed (acceptance time not in the bulk data set), ingested

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