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Mainstream Capital Management LLC: SPY position timeline

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

Mainstream Capital Management LLC held 3,473 SPY 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 3,473 shares
    Change vs previous 13F 0 shares

    1.56% of the 13F portfolio, value $2,593,532.

    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 3,473 shares
    Change vs previous 13F 0 shares

    1.52% of the 13F portfolio, value $2,258,631.

    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 3,473 shares
    Change vs previous 13F -8 shares

    1.55% of the 13F portfolio, value $2,368,308.

    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 3,481 shares
    Change vs previous 13F +10 shares

    1.54% of the 13F portfolio, value $2,318,973.

    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 3,471 shares
    Change vs previous 13F +90 shares

    1.56% of the 13F portfolio, value $2,144,557.

    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 3,381 shares
    Change vs previous 13F +130 shares

    1.5% of the 13F portfolio, value $1,891,298.

    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 3,251 shares
    Change vs previous 13F -220 shares

    1.34% of the 13F portfolio, value $1,905,346.

    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).

  8. period ended2024-09-30
    13F 3,471 shares
    Change vs previous 13F not available

    1.69% of the 13F portfolio, value $1,991,521.

    13F-HR 0002043084-24-000002 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).