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Disclosery

Port Capital LLC: ACGL position timeline

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

Port Capital LLC held 496,956 ACGL 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 496,956 shares
    Change vs previous 13F -11,696 shares

    1.97% of the 13F portfolio, value $48,234,549.

    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 508,652 shares
    Change vs previous 13F -64,140 shares

    2.17% of the 13F portfolio, value $48,825,505.

    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 572,792 shares
    Change vs previous 13F -77,480 shares

    2.37% of the 13F portfolio, value $54,942,209.

    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 650,272 shares
    Change vs previous 13F -1,374 shares

    2.46% of the 13F portfolio, value $58,999,000.

    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 651,646 shares
    Change vs previous 13F +7,500 shares

    2.52% of the 13F portfolio, value $59,332,000.

    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 644,146 shares
    Change vs previous 13F -5,494 shares

    2.81% of the 13F portfolio, value $61,954,000.

    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 649,640 shares
    Change vs previous 13F +3,497 shares

    2.74% of the 13F portfolio, value $59,994,000.

    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 646,143 shares
    Change vs previous 13F not available

    3.24% of the 13F portfolio, value $72,290,000.

    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).