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Disclosery

GAMMA Investing LLC: AMT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMMA Investing LLC on AMT, newest first. How the timeline and the estimate are built.

GAMMA Investing LLC held 9,732 AMT shares at 2026-09-30 per its 13F-HR filed 2026-10-08.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 9,732 shares
    Change vs previous 13F +509 shares

    0.05% of the 13F portfolio, value $1,593,112.

    13F-HR 0002010235-26-000007 filed by GAMMA Investing LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 9,223 shares
    Change vs previous 13F +595 shares

    0.06% of the 13F portfolio, value $1,508,687.

    13F-HR 0002010235-26-000005 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 8,628 shares
    Change vs previous 13F +2,030 shares

    0.07% of the 13F portfolio, value $1,489,105.

    13F-HR 0002010235-26-000003 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 6,598 shares
    Change vs previous 13F -2,421 shares

    0.06% of the 13F portfolio, value $1,158,498.

    13F-HR 0002010235-26-000001 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 9,019 shares
    Change vs previous 13F -1,560 shares

    0.1% of the 13F portfolio, value $1,734,629.

    13F-HR 0002010235-25-000009 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 10,579 shares
    Change vs previous 13F +2,758 shares

    0.15% of the 13F portfolio, value $2,338,280.

    13F-HR 0002010235-25-000007 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F/A 7,821 shares
    Change vs previous 13F +648 shares

    0.13% of the 13F portfolio, value $1,701,957.

    13F-HR/A 0002010235-25-000006 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 7,173 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $1,315,691.

    13F-HR 0002010235-25-000001 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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