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Disclosery

Port Capital LLC: COST position timeline

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

Port Capital LLC held 356 COST 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 356 shares
    Change vs previous 13F +75 shares

    0.01% of the 13F portfolio, value $333,027.

    13F-HR 0001104659-26-097336 filed by Port 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 281 shares
    Change vs previous 13F -95 shares

    0.01% of the 13F portfolio, value $279,997.

    13F-HR 0001104659-26-062522 filed by Port 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 376 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $324,240.

    13F-HR 0001104659-26-016441 filed by Port 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 376 shares
    Change vs previous 13F -12 shares

    0.01% of the 13F portfolio, value $348,000.

    13F-HR 0001104659-25-112411 filed by Port 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 388 shares
    Change vs previous 13F -83 shares

    0.02% of the 13F portfolio, value $384,000.

    13F-HR 0001104659-25-078671 filed by Port 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 471 shares
    Change vs previous 13F -56 shares

    0.02% of the 13F portfolio, value $445,000.

    13F-HR 0001104659-25-049491 filed by Port 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 527 shares
    Change vs previous 13F -2 shares

    0.02% of the 13F portfolio, value $483,000.

    13F-HR 0001104659-25-014092 filed by Port 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 529 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $469,000.

    13F-HR 0001104659-24-118811 filed by Port Capital LLC
    Filed (acceptance time not in the bulk data set), ingested

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