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GAMCO Investors (Gabelli): MLAB position timeline

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

GAMCO Investors (Gabelli) held 70,839 MLAB 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 70,839 shares
    Change vs previous 13F +506 shares

    0.03% of the 13F portfolio, value $7,052,022.

    13F-HR 0001140361-26-032509 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 8,340 shares
    • GABELLI FUNDS LLC: 62,499 shares

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

  2. period ended2026-03-31
    13F 70,333 shares
    Change vs previous 13F +1,855 shares

    0.02% of the 13F portfolio, value $6,218,844.

    13F-HR 0001140361-26-021337 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 7,834 shares
    • GABELLI FUNDS LLC: 62,499 shares

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

  3. period ended2025-12-31
    13F 68,478 shares
    Change vs previous 13F +6,292 shares

    0.02% of the 13F portfolio, value $5,375,523.

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

    • GAMCO INVESTORS, INC. ET AL: 7,754 shares
    • GABELLI FUNDS LLC: 60,724 shares

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

  4. period ended2025-09-30
    13F 62,186 shares
    Change vs previous 13F +33,100 shares

    0.02% of the 13F portfolio, value $4,167,084.

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

    • GAMCO INVESTORS, INC. ET AL: 8,212 shares
    • GABELLI FUNDS LLC: 53,974 shares

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

  5. period ended2025-06-30
    13F 29,086 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $2,740,483.

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

    • GAMCO INVESTORS, INC. ET AL: 3,930 shares
    • GABELLI FUNDS LLC: 25,156 shares

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