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Graham Holdings Co Master Retirement Trust: MKL position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Graham Holdings Co Master Retirement Trust on MKL, newest first. How the timeline and the estimate are built.

Graham Holdings Co Master Retirement Trust held 58,008 MKL 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 58,008 shares
    Change vs previous 13F 0 shares

    15.43% of the 13F portfolio, value $113,290,000.

    13F-HR 0001628280-26-057134 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    15.72% of the 13F portfolio, value $111,031,000.

    13F-HR 0001628280-26-035588 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    16.62% of the 13F portfolio, value $124,697,000.

    13F-HR 0001628280-26-008124 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    15.06% of the 13F portfolio, value $110,874,000.

    13F-HR 0001628280-25-052373 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    16.09% of the 13F portfolio, value $115,863,000.

    13F-HR 0001912699-25-000009 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    14.08% of the 13F portfolio, value $108,452,000.

    13F-HR 0001912699-25-000006 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F 0 shares

    15.07% of the 13F portfolio, value $100,135,000.

    13F-HR 0001912699-25-000003 filed by Graham Holdings Co Master Retirement Trust
    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 58,008 shares
    Change vs previous 13F not available

    13.7% of the 13F portfolio, value $90,990,000.

    13F-HR 0001912699-24-000010 filed by Graham Holdings Co Master Retirement Trust
    Filed (acceptance time not in the bulk data set), ingested

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