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GAMCO Investors (Gabelli): BLCO position timeline

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

GAMCO Investors (Gabelli) held 299,500 BLCO 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 299,500 shares
    Change vs previous 13F -23,700 shares

    0.02% of the 13F portfolio, value $4,959,720.

    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: 15,000 shares
    • GABELLI FUNDS LLC: 284,500 shares

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

  2. period ended2026-03-31
    13F 323,200 shares
    Change vs previous 13F -31,800 shares

    0.02% of the 13F portfolio, value $5,138,880.

    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: 15,000 shares
    • GABELLI FUNDS LLC: 308,200 shares

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

  3. period ended2025-12-31
    13F 355,000 shares
    Change vs previous 13F -169,000 shares

    0.02% of the 13F portfolio, value $6,063,400.

    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: 17,000 shares
    • GABELLI FUNDS LLC: 338,000 shares

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

  4. period ended2025-09-30
    13F 524,000 shares
    Change vs previous 13F -5,500 shares

    0.03% of the 13F portfolio, value $7,896,680.

    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: 85,000 shares
    • GABELLI FUNDS LLC: 439,000 shares

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

  5. period ended2025-06-30
    13F 529,500 shares
    Change vs previous 13F +14,400 shares

    0.03% of the 13F portfolio, value $6,888,795.

    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: 85,500 shares
    • GABELLI FUNDS LLC: 444,000 shares

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

  6. period ended2025-03-31
    13F 515,100 shares
    Change vs previous 13F +15,300 shares

    0.03% of the 13F portfolio, value $7,468,950.

    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: 73,100 shares
    • GABELLI FUNDS LLC: 442,000 shares

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

  7. period ended2024-12-31
    13F 499,800 shares
    Change vs previous 13F +38,400 shares

    0.04% of the 13F portfolio, value $9,026,388.

    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: 69,800 shares
    • GABELLI FUNDS LLC: 430,000 shares

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

  8. period ended2024-09-30
    13F 461,400 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $8,900,406.

    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: 71,400 shares
    • GABELLI FUNDS LLC: 390,000 shares

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