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Mainstream Capital Management LLC: AS position timeline

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

Mainstream Capital Management LLC held 23,265 AS 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 23,265 shares
    Change vs previous 13F +132 shares

    0.47% of the 13F portfolio, value $787,288.

    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 23,133 shares
    Change vs previous 13F +162 shares

    0.51% of the 13F portfolio, value $761,538.

    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 22,971 shares
    Change vs previous 13F +3,685 shares

    0.56% of the 13F portfolio, value $857,967.

    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 19,286 shares
    Change vs previous 13F +2,436 shares

    0.45% of the 13F portfolio, value $670,189.

    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 16,850 shares
    Change vs previous 13F 0 shares

    0.47% of the 13F portfolio, value $653,106.

    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 16,850 shares
    Change vs previous 13F +10,072 shares

    0.36% of the 13F portfolio, value $450,401.

    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).

  7. period ended2024-12-31
    13F 6,778 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $189,513.

    13F-HR 0002043084-25-000001 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).