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Mainstream Capital Management LLC: RIOT position timeline

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

Mainstream Capital Management LLC held 16,666 RIOT shares at 2026-06-30 per its 13F-HR filed 2026-07-15.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 16,666 shares
    Change vs previous 13F 0 shares

    0.27% of the 13F portfolio, value $456,315.

    13F-HR 0002043084-26-000003 filed by Mainstream Capital Management 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 16,666 shares
    Change vs previous 13F 0 shares

    0.14% of the 13F portfolio, value $205,992.

    13F-HR 0002043084-26-000002 filed by Mainstream Capital Management 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 16,666 shares
    Change vs previous 13F -1,866 shares

    0.14% of the 13F portfolio, value $211,158.

    13F-HR 0002043084-26-000001 filed by Mainstream Capital Management 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 18,532 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $352,664.

    13F-HR 0002043084-25-000006 filed by Mainstream Capital Management 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 18,532 shares
    Change vs previous 13F 0 shares

    0.15% of the 13F portfolio, value $209,412.

    13F-HR 0002043084-25-000004 filed by Mainstream Capital Management 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 18,532 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $131,948.

    13F-HR 0002043084-25-000002 filed by Mainstream Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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