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Disclosery

GAMCO Investors (Gabelli): RIO position timeline

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

GAMCO Investors (Gabelli) held 293,100 RIO 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 293,100 shares
    Change vs previous 13F +16,800 shares

    0.18% of the 13F portfolio, value $27,823,983.

    13F-HR 0001140361-26-032509 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).

  2. period ended2026-03-31
    13F 276,300 shares
    Change vs previous 13F -90,600 shares

    0.17% of the 13F portfolio, value $25,776,027.

    13F-HR 0001140361-26-021337 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).

  3. period ended2025-12-31
    13F 366,900 shares
    Change vs previous 13F -3,400 shares

    0.2% of the 13F portfolio, value $29,363,007.

    13F-HR 0001140361-26-003893 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).

  4. period ended2025-09-30
    13F 370,300 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $24,443,503.

    13F-HR 0001140361-25-041671 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).

  5. period ended2025-06-30
    13F 370,300 shares
    Change vs previous 13F 0 shares

    0.15% of the 13F portfolio, value $21,599,599.

    13F-HR 0001140361-25-030816 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).

  6. period ended2025-03-31
    13F 370,300 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $22,247,624.

    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 370,300 shares
    Change vs previous 13F +29,800 shares

    0.16% of the 13F portfolio, value $21,777,343.

    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 340,500 shares
    Change vs previous 13F not available

    0.17% of the 13F portfolio, value $24,233,385.

    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).