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Harbor Advisors LLC: ACGL position timeline

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

Harbor Advisors LLC held 11,500 ACGL shares at 2026-06-30 per its 13F-HR filed 2026-07-28.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 11,500 shares
    Change vs previous 13F 0 shares

    0.14% of the 13F portfolio, value $1,116,190.

    13F-HR 0001214659-26-009081 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.16% of the 13F portfolio, value $1,103,885.

    13F-HR 0001214659-26-005743 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $1,103,080.

    13F-HR 0001214659-26-000986 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.16% of the 13F portfolio, value $1,043,395.

    13F-HR 0001214659-25-016246 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $1,047,075.

    13F-HR 0001214659-25-011966 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.19% of the 13F portfolio, value $1,106,070.

    13F-HR 0001214659-25-007679 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $1,062,025.

    13F-HR 0001214659-25-002356 filed by Harbor Advisors 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 11,500 shares
    Change vs previous 13F not available

    0.22% of the 13F portfolio, value $1,286,620.

    13F-HR 0001214659-24-019061 filed by Harbor Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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