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GAMCO Investors (Gabelli): ATEX position timeline

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

GAMCO Investors (Gabelli) held 694,020 ATEX 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 694,020 shares
    Change vs previous 13F +2,400 shares

    0.27% of the 13F portfolio, value $71,442,419.

    13F-HR 0001140361-26-032508 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 415,520 shares
    • GABELLI FUNDS LLC: 278,500 shares

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

  2. period ended2026-03-31
    13F 691,620 shares
    Change vs previous 13F -66,407 shares

    0.11% of the 13F portfolio, value $26,412,968.

    13F-HR 0001140361-26-021334 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 425,820 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 0 shares
    • GABELLI FUNDS LLC: 265,800 shares

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

  3. period ended2025-12-31
    13F 758,027 shares
    Change vs previous 13F +99,475 shares

    0.06% of the 13F portfolio, value $16,547,730.

    13F-HR 0001140361-26-003895 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 422,470 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 30,650 shares
    • GABELLI FUNDS LLC: 304,907 shares

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

  4. period ended2025-09-30
    13F 658,552 shares
    Change vs previous 13F +180,625 shares

    0.06% of the 13F portfolio, value $14,139,112.

    13F-HR 0001140361-25-041670 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 320,070 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 52,200 shares
    • GABELLI FUNDS LLC: 286,282 shares

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

  5. period ended2025-06-30
    13F 477,927 shares
    Change vs previous 13F +129,957 shares

    0.05% of the 13F portfolio, value $12,258,828.

    13F-HR 0001140361-25-030814 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 273,425 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 16,350 shares
    • GABELLI FUNDS LLC: 188,152 shares

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

  6. period ended2025-03-31
    13F 347,970 shares
    Change vs previous 13F +62,900 shares

    0.06% of the 13F portfolio, value $12,735,702.

    13F-HR 0001140361-25-018975 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 202,570 shares
    • GABELLI FUNDS LLC: 145,400 shares

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

  7. period ended2024-12-31
    13F 285,070 shares
    Change vs previous 13F +42,878 shares

    0.04% of the 13F portfolio, value $8,743,097.

    13F-HR 0001140361-25-004330 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 148,270 shares
    • GABELLI FUNDS LLC: 136,800 shares

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

  8. period ended2024-09-30
    13F 242,192 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $9,120,951.

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

    • GAMCO INVESTORS, INC. ET AL: 101,770 shares
    • GABELLI FUNDS LLC: 140,422 shares

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