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Disclosery

GAMMA Investing LLC: ATKR position timeline

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

GAMMA Investing LLC held 435 ATKR 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 435 shares
    Change vs previous 13F +119 shares

    <0.01% of the 13F portfolio, value $41,216.

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

  2. period ended2026-06-30
    13F 316 shares
    Change vs previous 13F +32 shares

    <0.01% of the 13F portfolio, value $24,029.

    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 284 shares
    Change vs previous 13F -57 shares

    <0.01% of the 13F portfolio, value $16,730.

    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 341 shares
    Change vs previous 13F +69 shares

    <0.01% of the 13F portfolio, value $21,568.

    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 272 shares
    Change vs previous 13F -363 shares

    <0.01% of the 13F portfolio, value $17,065.

    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 635 shares
    Change vs previous 13F +86 shares

    <0.01% of the 13F portfolio, value $44,799.

    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 549 shares
    Change vs previous 13F +515 shares

    <0.01% of the 13F portfolio, value $32,935.

    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 34 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $2,837.

    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).