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Disclosery

Main Street Research LLC: SPY position timeline

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

Main Street Research LLC held 3,485 SPY shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 3,485 shares
    Change vs previous 13F +222 shares

    0.12% of the 13F portfolio, value $2,602,493.

    13F-HR 0001420506-26-001335 filed by Main Street Research 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 3,263 shares
    Change vs previous 13F +600 shares

    0.12% of the 13F portfolio, value $2,121,831.

    13F-HR 0001420506-26-000773 filed by Main Street Research 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 2,663 shares
    Change vs previous 13F +9 shares

    0.1% of the 13F portfolio, value $1,820,969.

    13F-HR 0001420506-26-000210 filed by Main Street Research 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 2,654 shares
    Change vs previous 13F -17 shares

    0.1% of the 13F portfolio, value $1,768,343.

    13F-HR 0001420506-25-003188 filed by Main Street Research 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 2,671 shares
    Change vs previous 13F +499 shares

    0.1% of the 13F portfolio, value $1,655,334.

    13F-HR 0001420506-25-001710 filed by Main Street Research 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 2,172 shares
    Change vs previous 13F -159 shares

    0.08% of the 13F portfolio, value $1,218,773.

    13F-HR 0001420506-25-000840 filed by Main Street Research 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 2,331 shares
    Change vs previous 13F +206 shares

    0.09% of the 13F portfolio, value $1,370,644.

    13F-HR 0001420506-25-000201 filed by Main Street Research 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 2,125 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $1,223,002.

    13F-HR 0001941040-24-000499 filed by Main Street Research LLC
    Filed (acceptance time not in the bulk data set), ingested

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