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Disclosery

GAMMA Investing LLC: MAT position timeline

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

GAMMA Investing LLC held 4,311 MAT 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 4,311 shares
    Change vs previous 13F +1,297 shares

    <0.01% of the 13F portfolio, value $54,577.

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

  2. period ended2026-06-30
    13F 3,014 shares
    Change vs previous 13F -3,845 shares

    <0.01% of the 13F portfolio, value $41,834.

    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 6,859 shares
    Change vs previous 13F -2,485 shares

    <0.01% of the 13F portfolio, value $99,661.

    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 9,344 shares
    Change vs previous 13F +693 shares

    0.01% of the 13F portfolio, value $185,385.

    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 8,651 shares
    Change vs previous 13F -1,555 shares

    0.01% of the 13F portfolio, value $145,596.

    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 10,206 shares
    Change vs previous 13F +5,148 shares

    0.01% of the 13F portfolio, value $201,262.

    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 5,058 shares
    Change vs previous 13F +1,517 shares

    0.01% of the 13F portfolio, value $98,277.

    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 3,541 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $62,782.

    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).