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Disclosery

East Coast Asset Management, LLC.: CMCSA position timeline

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

East Coast Asset Management, LLC. held 15,100 CMCSA 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 15,100 shares
    Change vs previous 13F -182 shares

    0.11% of the 13F portfolio, value $370,707.

    13F-HR 0001579254-26-000004 filed by East Coast Asset 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 15,282 shares
    Change vs previous 13F -235 shares

    0.14% of the 13F portfolio, value $438,746.

    13F-HR 0001579254-26-000003 filed by East Coast Asset 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 15,517 shares
    Change vs previous 13F -3,056 shares

    0.14% of the 13F portfolio, value $463,803.

    13F-HR 0001579254-26-000002 filed by East Coast Asset 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 18,573 shares
    Change vs previous 13F +10 shares

    0.18% of the 13F portfolio, value $583,560.

    13F-HR 0001579254-25-000004 filed by East Coast Asset 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 18,563 shares
    Change vs previous 13F +10 shares

    0.22% of the 13F portfolio, value $662,509.

    13F-HR 0001085146-25-005068 filed by East Coast Asset 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 18,553 shares
    Change vs previous 13F -1,581 shares

    0.24% of the 13F portfolio, value $684,596.

    13F-HR 0001085146-25-003192 filed by East Coast Asset 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 20,134 shares
    Change vs previous 13F +8 shares

    0.25% of the 13F portfolio, value $755,627.

    13F-HR 0001085146-25-001516 filed by East Coast Asset 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 20,126 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $840,666.

    13F-HR 0001085146-24-005781 filed by East Coast Asset Management, LLC.
    Filed (acceptance time not in the bulk data set), ingested

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