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GAMCO Investors (Gabelli): SIMO position timeline

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

GAMCO Investors (Gabelli) held 0 SIMO 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 -18,560 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 18,560 shares
    Change vs previous 13F -4,029 shares

    0.02% of the 13F portfolio, value $1,720,512.

    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 22,589 shares
    Change vs previous 13F -36,810 shares

    0.02% of the 13F portfolio, value $2,141,663.

    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: 22,589 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 0 shares
    • GABELLI FUNDS LLC: 0 shares

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

  4. period ended2025-06-30
    13F 59,399 shares
    Change vs previous 13F -5,160 shares

    0.02% of the 13F portfolio, value $4,465,024.

    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: 26,228 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 16,709 shares
    • GABELLI FUNDS LLC: 16,462 shares

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

  5. period ended2025-03-31
    13F 64,559 shares
    Change vs previous 13F +3,850 shares

    0.02% of the 13F portfolio, value $3,264,103.

    13F-HR 0001140361-25-018982 filed by GABELLI & Co INVESTMENT ADVISERS, INC.
    Filed (acceptance time not in the bulk data set), ingested

    • GABELLI & Co INVESTMENT ADVISERS, INC.: 34,559 shares
    • GABELLI FUNDS LLC: 30,000 shares

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

  6. period ended2024-12-31
    13F 60,709 shares
    Change vs previous 13F +3,800 shares

    0.02% of the 13F portfolio, value $3,281,321.

    13F-HR 0001140361-25-004332 filed by GABELLI & Co INVESTMENT ADVISERS, INC.
    Filed (acceptance time not in the bulk data set), ingested

    • GABELLI & Co INVESTMENT ADVISERS, INC.: 32,309 shares
    • GABELLI FUNDS LLC: 28,400 shares

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

  7. period ended2024-09-30
    13F 56,909 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $3,456,653.

    13F-HR 0001140361-24-046504 filed by GABELLI & Co INVESTMENT ADVISERS, INC.
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 0 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 30,209 shares
    • GABELLI FUNDS LLC: 26,700 shares

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