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Disclosery

BERKLEY W R CORP: AMZN position timeline

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

BERKLEY W R CORP held 50,000 AMZN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 50,000 shares
    Change vs previous 13F +50,000 shares

    0.58% of the 13F portfolio, value $11,917,000.

    13F-HR 0000899140-26-000887 filed by BERKLEY W R 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 0 shares
    Change vs previous 13F -69,600 shares

    13F-HR 0000899140-26-000586 filed by BERKLEY W R CORP
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  3. period ended2025-12-31
    13F 69,600 shares
    Change vs previous 13F -308,300 shares

    0.9% of the 13F portfolio, value $16,065,072.

    13F-HR 0000899140-26-000194 filed by BERKLEY W R 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 377,900 shares
    Change vs previous 13F +134,200 shares

    5.36% of the 13F portfolio, value $82,975,503.

    13F-HR 0000899140-25-001317 filed by BERKLEY W R 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 243,700 shares
    Change vs previous 13F -50,700 shares

    3.32% of the 13F portfolio, value $53,465,343.

    13F-HR 0000899140-25-000995 filed by BERKLEY W R 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 294,400 shares
    Change vs previous 13F -103,100 shares

    4.09% of the 13F portfolio, value $56,012,544.

    13F-HR 0000899140-25-000708 filed by BERKLEY W R 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 397,500 shares
    Change vs previous 13F +187,900 shares

    4.93% of the 13F portfolio, value $87,207,525.

    13F-HR 0000899140-25-000325 filed by BERKLEY W R 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 209,600 shares
    Change vs previous 13F not available

    2.8% of the 13F portfolio, value $39,054,768.

    13F-HR 0000899140-24-001277 filed by BERKLEY W R CORP
    Filed (acceptance time not in the bulk data set), ingested

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