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QUADRANT CAPITAL GROUP LLC: AMKR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of QUADRANT CAPITAL GROUP LLC on AMKR, newest first. How the timeline and the estimate are built.

QUADRANT CAPITAL GROUP LLC held 34,638 AMKR 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 34,638 shares
    Change vs previous 13F -1,213 shares

    0.08% of the 13F portfolio, value $2,986,835.

    13F-HR 0001650717-26-000005 filed by QUADRANT CAPITAL GROUP 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/A 35,851 shares
    Change vs previous 13F -298 shares

    0.05% of the 13F portfolio, value $1,614,371.

    13F-HR/A 0001650717-26-000003 filed by QUADRANT CAPITAL GROUP 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 36,149 shares
    Change vs previous 13F +5,050 shares

    0.04% of the 13F portfolio, value $1,427,163.

    13F-HR 0001650717-26-000001 filed by QUADRANT CAPITAL GROUP 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 31,099 shares
    Change vs previous 13F -385 shares

    0.03% of the 13F portfolio, value $883,212.

    13F-HR 0001650717-25-000006 filed by QUADRANT CAPITAL GROUP 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 31,484 shares
    Change vs previous 13F +30,605 shares

    0.02% of the 13F portfolio, value $660,850.

    13F-HR 0001085146-25-004949 filed by QUADRANT CAPITAL GROUP 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 879 shares
    Change vs previous 13F -275 shares

    <0.01% of the 13F portfolio, value $15,875.

    13F-HR 0001650717-25-000002 filed by QUADRANT CAPITAL GROUP 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 1,154 shares
    Change vs previous 13F -558 shares

    <0.01% of the 13F portfolio, value $29,647.

    13F-HR 0001650717-25-000001 filed by QUADRANT CAPITAL GROUP 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 1,712 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $52,388.

    13F-HR 0001650717-24-000007 filed by QUADRANT CAPITAL GROUP LLC
    Filed (acceptance time not in the bulk data set), ingested

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