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Disclosery

Harbor Island Capital LLC: CMCSA position timeline

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

Harbor Island Capital LLC held 549,531 CMCSA shares at 2026-06-30 per its 13F-HR filed 2026-07-30.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 549,531 shares
    Change vs previous 13F +69,130 shares

    3.59% of the 13F portfolio, value $13,490,986.

    13F-HR 0001172661-26-002936 filed by Harbor Island Capital 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 480,401 shares
    Change vs previous 13F 0 shares

    5.12% of the 13F portfolio, value $13,792,313.

    13F-HR 0001172661-26-001706 filed by Harbor Island Capital 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 480,401 shares
    Change vs previous 13F +170,000 shares

    5.51% of the 13F portfolio, value $14,359,186.

    13F-HR 0001172661-26-000293 filed by Harbor Island Capital 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 310,401 shares
    Change vs previous 13F +93,608 shares

    4.17% of the 13F portfolio, value $9,752,799.

    13F-HR 0001172661-25-004359 filed by Harbor Island Capital 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 216,793 shares
    Change vs previous 13F -21,380 shares

    3.63% of the 13F portfolio, value $7,737,342.

    13F-HR 0001172661-25-002945 filed by Harbor Island Capital 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 238,173 shares
    Change vs previous 13F +66,280 shares

    4.35% of the 13F portfolio, value $8,788,584.

    13F-HR 0001172661-25-001627 filed by Harbor Island Capital 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 171,893 shares
    Change vs previous 13F 0 shares

    3.09% of the 13F portfolio, value $6,451,144.

    13F-HR 0001172661-25-000369 filed by Harbor Island Capital 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 171,893 shares
    Change vs previous 13F not available

    3.4% of the 13F portfolio, value $7,179,971.

    13F-HR 0001172661-24-004296 filed by Harbor Island Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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