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Disclosery

GAMCO Investors (Gabelli): AMBA position timeline

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

GAMCO Investors (Gabelli) held 22,479 AMBA 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 22,479 shares
    Change vs previous 13F +12,625 shares

    0.01% of the 13F portfolio, value $1,928,698.

    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: 11,879 shares
    • GABELLI FUNDS LLC: 10,600 shares

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

  2. period ended2026-03-31
    13F 9,854 shares
    Change vs previous 13F +1,707 shares

    <0.01% of the 13F portfolio, value $507,235.

    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).

  3. period ended2025-12-31
    13F 8,147 shares
    Change vs previous 13F -7,052 shares

    0.01% of the 13F portfolio, value $577,133.

    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).

  4. period ended2025-09-30
    13F 15,199 shares
    Change vs previous 13F -977 shares

    0.01% of the 13F portfolio, value $1,254,221.

    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).

  5. period ended2025-06-30
    13F 16,176 shares
    Change vs previous 13F -2,172 shares

    0.01% of the 13F portfolio, value $1,068,667.

    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).

  6. period ended2025-03-31
    13F 18,348 shares
    Change vs previous 13F -153 shares

    0.01% of the 13F portfolio, value $923,455.

    13F-HR 0001140361-25-018975 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).

  7. period ended2024-12-31
    13F 18,501 shares
    Change vs previous 13F -377 shares

    0.01% of the 13F portfolio, value $1,345,763.

    13F-HR 0001140361-25-004330 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).

  8. period ended2024-09-30
    13F 18,878 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,064,814.

    13F-HR 0001140361-24-046738 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).