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Disclosery

GAMCO Investors (Gabelli): ATO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMCO Investors (Gabelli) on ATO, newest first. How the timeline and the estimate are built.

GAMCO Investors (Gabelli) held 92,950 ATO shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 92,950 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $16,012,497.

    13F-HR 0001140361-26-032509 filed by GABELLI FUNDS LLC
    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 92,950 shares
    Change vs previous 13F 0 shares

    0.12% of the 13F portfolio, value $17,169,724.

    13F-HR 0001140361-26-021337 filed by GABELLI FUNDS LLC
    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 92,950 shares
    Change vs previous 13F -1,600 shares

    0.11% of the 13F portfolio, value $15,581,209.

    13F-HR 0001140361-26-003893 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 94,550 shares
    Change vs previous 13F -750 shares

    0.11% of the 13F portfolio, value $16,144,413.

    13F-HR 0001140361-25-041671 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 95,300 shares
    Change vs previous 13F -200 shares

    0.1% of the 13F portfolio, value $14,686,683.

    13F-HR 0001140361-25-030816 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 95,500 shares
    Change vs previous 13F -1,300 shares

    0.11% of the 13F portfolio, value $14,762,390.

    13F-HR 0001140361-25-018974 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 96,800 shares
    Change vs previous 13F -1,300 shares

    0.1% of the 13F portfolio, value $13,481,336.

    13F-HR 0001140361-25-004328 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 98,100 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $13,607,451.

    13F-HR 0001140361-24-046503 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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