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Disclosery

Central Securities Corp: COHR position timeline

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

Central Securities Corp held 0 COHR shares at 2026-03-31 per its 13F-HR filed 2026-05-08.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -150,000 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 150,000 shares
    Change vs previous 13F -50,000 shares

    2.23% of the 13F portfolio, value $27,685,500.

    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).

  3. period ended2025-09-30
    13F 200,000 shares
    Change vs previous 13F 0 shares

    1.77% of the 13F portfolio, value $21,544,000.

    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).

  4. period ended2025-06-30
    13F 200,000 shares
    Change vs previous 13F 0 shares

    1.57% of the 13F portfolio, value $17,842,000.

    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).

  5. period ended2025-03-31
    13F 200,000 shares
    Change vs previous 13F 0 shares

    1.24% of the 13F portfolio, value $12,988,000.

    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).

  6. period ended2024-12-31
    13F 200,000 shares
    Change vs previous 13F 0 shares

    1.81% of the 13F portfolio, value $18,946,000.

    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).

  7. period ended2024-09-30
    13F 200,000 shares
    Change vs previous 13F not available

    1.73% of the 13F portfolio, value $17,782,000.

    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).