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GAMCO Investors (Gabelli): AAOI position timeline

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

GAMCO Investors (Gabelli) held 0 AAOI shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -9,200 shares

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

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 9,200 shares
    Change vs previous 13F -19,800 shares

    <0.01% of the 13F portfolio, value $320,712.

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

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

  3. period ended2025-09-30
    13F 29,000 shares
    Change vs previous 13F -12,500 shares

    0.01% of the 13F portfolio, value $751,970.

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

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

  4. period ended2025-06-30
    13F 41,500 shares
    Change vs previous 13F -6,000 shares

    0.01% of the 13F portfolio, value $1,066,135.

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

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

  5. period ended2025-03-31
    13F 47,500 shares
    Change vs previous 13F -30,700 shares

    0.01% of the 13F portfolio, value $729,125.

    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: 47,500 shares
    • GABELLI FUNDS LLC: 0 shares

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

  6. period ended2024-12-31
    13F 78,200 shares
    Change vs previous 13F -24,700 shares

    0.01% of the 13F portfolio, value $2,882,452.

    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: 63,000 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 0 shares
    • GABELLI FUNDS LLC: 15,200 shares

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

  7. period ended2024-09-30
    13F 102,900 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,472,499.

    13F-HR 0001140361-24-046738 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 67,800 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 11,000 shares
    • GABELLI FUNDS LLC: 24,100 shares

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