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Disclosery

GAMCO Investors (Gabelli): OTTR position timeline

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

GAMCO Investors (Gabelli) held 726,998 OTTR 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 726,998 shares
    Change vs previous 13F -5,002 shares

    0.24% of the 13F portfolio, value $65,415,280.

    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: 264,798 shares
    • GABELLI FUNDS LLC: 462,200 shares

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

  2. period ended2026-03-31
    13F 732,000 shares
    Change vs previous 13F -9,450 shares

    0.26% of the 13F portfolio, value $64,247,640.

    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: 264,800 shares
    • GABELLI FUNDS LLC: 467,200 shares

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

  3. period ended2025-12-31
    13F 741,450 shares
    Change vs previous 13F 0 shares

    0.24% of the 13F portfolio, value $59,916,575.

    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: 272,350 shares
    • GABELLI FUNDS LLC: 469,100 shares

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

  4. period ended2025-09-30
    13F 741,450 shares
    Change vs previous 13F -1,542 shares

    0.24% of the 13F portfolio, value $60,776,657.

    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: 272,350 shares
    • GABELLI FUNDS LLC: 469,100 shares

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

  5. period ended2025-06-30
    13F 742,992 shares
    Change vs previous 13F -900 shares

    0.24% of the 13F portfolio, value $57,277,253.

    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: 273,392 shares
    • GABELLI FUNDS LLC: 469,600 shares

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

  6. period ended2025-03-31
    13F 743,892 shares
    Change vs previous 13F -2,300 shares

    0.27% of the 13F portfolio, value $59,786,600.

    13F-HR 0001140361-25-018974 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 273,192 shares
    • GABELLI FUNDS LLC: 470,700 shares

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

  7. period ended2024-12-31
    13F 746,192 shares
    Change vs previous 13F +8,250 shares

    0.24% of the 13F portfolio, value $55,098,817.

    13F-HR 0001140361-25-004328 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 273,692 shares
    • GABELLI FUNDS LLC: 472,500 shares

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

  8. period ended2024-09-30
    13F 737,942 shares
    Change vs previous 13F not available

    0.24% of the 13F portfolio, value $57,677,547.

    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: 263,442 shares
    • GABELLI FUNDS LLC: 474,500 shares

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