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GENERAL AMERICAN INVESTORS CO INC: MRVI position timeline

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

GENERAL AMERICAN INVESTORS CO INC held 1,716,193 MRVI 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 1,716,193 shares
    Change vs previous 13F 0 shares

    0.65% of the 13F portfolio, value $10,709,044.

    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 1,716,193 shares
    Change vs previous 13F +130,877 shares

    0.32% of the 13F portfolio, value $4,856,826.

    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 1,585,316 shares
    Change vs previous 13F +1,448,907 shares

    0.32% of the 13F portfolio, value $5,152,277.

    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 136,409 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $391,494.

    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).