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Steamboat Capital Partners, LLC: CENX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Steamboat Capital Partners, LLC on CENX, newest first. How the timeline and the estimate are built.

Steamboat Capital Partners, LLC held 296,666 CENX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 296,666 shares
    Change vs previous 13F +20,418 shares

    2.92% of the 13F portfolio, value $13,649,603.

    13F-HR 0001635663-26-000007 filed by Steamboat Capital Partners, 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 276,248 shares
    Change vs previous 13F -147,560 shares

    4.03% of the 13F portfolio, value $16,212,995.

    13F-HR 0001635663-26-000005 filed by Steamboat Capital Partners, 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 423,808 shares
    Change vs previous 13F -48,121 shares

    4.56% of the 13F portfolio, value $16,604,797.

    13F-HR 0001635663-26-000003 filed by Steamboat Capital Partners, 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 471,929 shares
    Change vs previous 13F +280,548 shares

    3.61% of the 13F portfolio, value $13,855,835.

    13F-HR 0001635663-25-000008 filed by Steamboat Capital Partners, 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 191,381 shares
    Change vs previous 13F -3,597 shares

    0.98% of the 13F portfolio, value $3,448,686.

    13F-HR 0001635663-25-000006 filed by Steamboat Capital Partners, 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 194,978 shares
    Change vs previous 13F +146,962 shares

    1.09% of the 13F portfolio, value $3,618,792.

    13F-HR 0001635663-25-000003 filed by Steamboat Capital Partners, 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 48,016 shares
    Change vs previous 13F -971 shares

    0.27% of the 13F portfolio, value $874,852.

    13F-HR 0001635663-25-000002 filed by Steamboat Capital Partners, 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 48,987 shares
    Change vs previous 13F not available

    0.25% of the 13F portfolio, value $795,059.

    13F-HR 0001635663-24-000007 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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