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Disclosery

Summa Corp.: AMZN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Summa Corp. on AMZN, newest first. How the timeline and the estimate are built.

Summa Corp. held 22,339 AMZN shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 22,339 shares
    Change vs previous 13F +1,007 shares

    1.67% of the 13F portfolio, value $5,324,277.

    13F-HR 0001214659-26-009701 filed by Summa Corp.
    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 21,332 shares
    Change vs previous 13F +240 shares

    1.84% of the 13F portfolio, value $4,442,816.

    13F-HR 0001214659-26-005326 filed by Summa Corp.
    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 21,092 shares
    Change vs previous 13F -342 shares

    2.09% of the 13F portfolio, value $4,868,455.

    13F-HR 0001214659-26-000679 filed by Summa Corp.
    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 21,434 shares
    Change vs previous 13F -366 shares

    2.07% of the 13F portfolio, value $4,706,263.

    13F-HR 0001214659-25-015365 filed by Summa Corp.
    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 21,800 shares
    Change vs previous 13F +13,688 shares

    2.49% of the 13F portfolio, value $4,782,702.

    13F-HR 0001214659-25-010906 filed by Summa Corp.
    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 8,112 shares
    Change vs previous 13F 0 shares

    0.89% of the 13F portfolio, value $1,543,389.

    13F-HR 0001214659-25-006133 filed by Summa Corp.
    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 8,112 shares
    Change vs previous 13F -953 shares

    0.87% of the 13F portfolio, value $1,779,692.

    13F-HR 0001214659-25-001191 filed by Summa Corp.
    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 9,065 shares
    Change vs previous 13F not available

    0.81% of the 13F portfolio, value $1,689,081.

    13F-HR 0001214659-24-017623 filed by Summa Corp.
    Filed (acceptance time not in the bulk data set), ingested

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