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Disclosery

GAMCO Investors (Gabelli): OSK position timeline

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

GAMCO Investors (Gabelli) held 63,501 OSK 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 63,501 shares
    Change vs previous 13F +5,118 shares

    0.04% of the 13F portfolio, value $9,746,134.

    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: 15,054 shares
    • GABELLI FUNDS LLC: 48,447 shares

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

  2. period ended2026-03-31
    13F 58,383 shares
    Change vs previous 13F -3,354 shares

    0.03% of the 13F portfolio, value $8,594,562.

    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: 15,003 shares
    • GABELLI FUNDS LLC: 43,380 shares

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

  3. period ended2025-12-31
    13F 61,737 shares
    Change vs previous 13F +1,320 shares

    0.03% of the 13F portfolio, value $7,756,019.

    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: 15,030 shares
    • GABELLI FUNDS LLC: 46,707 shares

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

  4. period ended2025-09-30
    13F 60,417 shares
    Change vs previous 13F +1,320 shares

    0.03% of the 13F portfolio, value $7,836,085.

    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: 15,960 shares
    • GABELLI FUNDS LLC: 44,457 shares

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

  5. period ended2025-06-30
    13F 59,097 shares
    Change vs previous 13F +42,097 shares

    0.03% of the 13F portfolio, value $6,709,873.

    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: 16,911 shares
    • GABELLI FUNDS LLC: 42,186 shares

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

  6. period ended2025-03-31
    13F 17,000 shares
    Change vs previous 13F +1,000 shares

    0.01% of the 13F portfolio, value $1,599,360.

    13F-HR 0001140361-25-018974 filed by GABELLI FUNDS LLC
    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 16,000 shares
    Change vs previous 13F +4,000 shares

    0.01% of the 13F portfolio, value $1,521,120.

    13F-HR 0001140361-25-004328 filed by GABELLI FUNDS LLC
    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 12,000 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,202,520.

    13F-HR 0001140361-24-046503 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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