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Disclosery

Central Securities Corp: MDT position timeline

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

Central Securities Corp held 250,000 MDT 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 250,000 shares
    Change vs previous 13F 0 shares

    1.46% of the 13F portfolio, value $19,557,500.

    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 250,000 shares
    Change vs previous 13F 0 shares

    1.79% of the 13F portfolio, value $21,662,500.

    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 250,000 shares
    Change vs previous 13F 0 shares

    1.93% of the 13F portfolio, value $24,015,000.

    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 250,000 shares
    Change vs previous 13F +75,000 shares

    1.96% of the 13F portfolio, value $23,810,000.

    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 175,000 shares
    Change vs previous 13F 0 shares

    1.35% of the 13F portfolio, value $15,254,750.

    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 175,000 shares
    Change vs previous 13F -10,000 shares

    1.5% of the 13F portfolio, value $15,725,500.

    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 185,000 shares
    Change vs previous 13F 0 shares

    1.41% of the 13F portfolio, value $14,777,800.

    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 185,000 shares
    Change vs previous 13F not available

    1.62% of the 13F portfolio, value $16,655,550.

    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).