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DIMENSIONAL FUND ADVISORS LP: KOP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DIMENSIONAL FUND ADVISORS LP on KOP, newest first. How the timeline and the estimate are built.

DIMENSIONAL FUND ADVISORS LP held 1,237,249 KOP shares at 2026-06-30 per its 13F-HR filed 2026-08-11, and reported 1,265,529 shares, 6.7%, in a 13G/A filed 2026-10-08.

Estimated current stake: 1,265,529 shares, 6.7% of the class

Estimated from 13G/A of 2026-10-08. As of 2026-09-30, 13G/A 0000354204-26-001043.

Shares are the reporting group's aggregate and may include entities that do not file a 13F.

Percent of portfolio stays on the 13F for 2026-06-30.

  1. event date2026-09-30
    13G/A 1,265,529 shares
    Share basis changed not comparable

    6.7% of the class. Different basis (group aggregate from 13G/A).

    13G/A 0000354204-26-001043 filed by DIMENSIONAL FUND ADVISORS LP
    Accepted , ingested

    A 13D/G states the aggregate of its reporting persons, which may include entities that do not file a 13F.

  2. period ended2026-06-30
    13F 1,237,249 shares
    Change vs previous 13F +45,891 shares

    0.01% of the 13F portfolio, value $55,553,509.

    13F-HR 0000354204-26-000866 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 1,191,358 shares
    Change vs previous 13F +17,833 shares

    0.01% of the 13F portfolio, value $46,081,563.

    13F-HR 0000354204-26-000581 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 1,173,525 shares
    Change vs previous 13F -4,889 shares

    0.01% of the 13F portfolio, value $31,779,388.

    13F-HR 0000354204-26-000347 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 1,178,414 shares
    Change vs previous 13F +58 shares

    0.01% of the 13F portfolio, value $32,995,064.

    13F-HR 0000354204-25-001337 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 1,178,356 shares
    Change vs previous 13F -29,468 shares

    0.01% of the 13F portfolio, value $37,885,410.

    13F-HR 0000354204-25-001097 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 1,207,824 shares
    Change vs previous 13F -29,662 shares

    0.01% of the 13F portfolio, value $33,818,506.

    13F-HR 0000354204-25-000866 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 1,237,486 shares
    Change vs previous 13F +8,111 shares

    0.01% of the 13F portfolio, value $40,094,010.

    13F-HR 0000354204-25-000528 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  9. period ended2024-09-30
    13F 1,229,375 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $44,909,758.

    13F-HR 0000354204-24-004773 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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