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GENERAL AMERICAN INVESTORS CO INC: NN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GENERAL AMERICAN INVESTORS CO INC on NN, newest first. How the timeline and the estimate are built.

GENERAL AMERICAN INVESTORS CO INC held 649,814 NN shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 649,814 shares
    Change vs previous 13F +29,604 shares

    0.7% of the 13F portfolio, value $11,586,184.

    13F-HR 0000040417-26-000045 filed by GENERAL AMERICAN INVESTORS CO INC
    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 620,210 shares
    Change vs previous 13F -180,000 shares

    0.66% of the 13F portfolio, value $9,935,764.

    13F-HR 0000040417-26-000043 filed by GENERAL AMERICAN INVESTORS CO INC
    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 800,210 shares
    Change vs previous 13F -176,765 shares

    0.83% of the 13F portfolio, value $13,315,494.

    13F-HR 0000040417-26-000031 filed by GENERAL AMERICAN INVESTORS CO INC
    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 976,975 shares
    Change vs previous 13F -143,252 shares

    0.87% of the 13F portfolio, value $13,970,743.

    13F-HR 0000040417-25-000050 filed by GENERAL AMERICAN INVESTORS CO INC
    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 1,120,227 shares
    Change vs previous 13F 0 shares

    1.14% of the 13F portfolio, value $17,027,450.

    13F-HR 0000040417-25-000041 filed by GENERAL AMERICAN INVESTORS CO INC
    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 1,120,227 shares
    Change vs previous 13F +265,227 shares

    1.01% of the 13F portfolio, value $13,633,163.

    13F-HR 0000040417-25-000034 filed by GENERAL AMERICAN INVESTORS CO INC
    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 855,000 shares
    Change vs previous 13F -811,948 shares

    0.95% of the 13F portfolio, value $13,303,800.

    13F-HR 0000040417-25-000021 filed by GENERAL AMERICAN INVESTORS CO INC
    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 1,666,948 shares
    Change vs previous 13F not available

    0.87% of the 13F portfolio, value $12,485,441.

    13F-HR 0000040417-24-000041 filed by GENERAL AMERICAN INVESTORS CO INC
    Filed (acceptance time not in the bulk data set), ingested

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