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Disclosery

GAMMA Investing LLC: ATI position timeline

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

GAMMA Investing LLC held 6,192 ATI 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 6,192 shares
    Change vs previous 13F +1,399 shares

    0.04% of the 13F portfolio, value $1,172,765.

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

  2. period ended2026-06-30
    13F 4,793 shares
    Change vs previous 13F +895 shares

    0.04% of the 13F portfolio, value $944,700.

    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 3,898 shares
    Change vs previous 13F +521 shares

    0.03% of the 13F portfolio, value $567,003.

    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 3,377 shares
    Change vs previous 13F +597 shares

    0.02% of the 13F portfolio, value $387,545.

    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 2,780 shares
    Change vs previous 13F -219 shares

    0.01% of the 13F portfolio, value $226,125.

    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 2,999 shares
    Change vs previous 13F -479 shares

    0.02% of the 13F portfolio, value $258,934.

    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 3,478 shares
    Change vs previous 13F +979 shares

    0.01% of the 13F portfolio, value $180,960.

    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 2,499 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $137,545.

    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).