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MATTERN CAPITAL MANAGEMENT, LLC: COR position timeline

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

MATTERN CAPITAL MANAGEMENT, LLC held 46,831 COR shares at 2026-06-30 per its 13F-HR filed 2026-07-24.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 46,831 shares
    Change vs previous 13F +4,836 shares

    1.55% of the 13F portfolio, value $13,252,236.

    13F-HR 0001725547-26-000252 filed by MATTERN CAPITAL MANAGEMENT, 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 41,995 shares
    Change vs previous 13F -566 shares

    1.58% of the 13F portfolio, value $13,192,309.

    13F-HR 0001725547-26-000166 filed by MATTERN CAPITAL MANAGEMENT, 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 42,561 shares
    Change vs previous 13F -1,488 shares

    1.7% of the 13F portfolio, value $14,374,978.

    13F-HR 0001725547-26-000059 filed by MATTERN CAPITAL MANAGEMENT, 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 44,049 shares
    Change vs previous 13F -2,928 shares

    1.62% of the 13F portfolio, value $13,766,634.

    13F-HR 0001725547-25-004185 filed by MATTERN CAPITAL MANAGEMENT, 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 46,977 shares
    Change vs previous 13F -593 shares

    1.69% of the 13F portfolio, value $14,086,053.

    13F-HR 0001725547-25-003493 filed by MATTERN CAPITAL MANAGEMENT, 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 47,570 shares
    Change vs previous 13F -1,128 shares

    1.68% of the 13F portfolio, value $13,228,741.

    13F-HR 0001725547-25-001447 filed by MATTERN CAPITAL MANAGEMENT, 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 48,698 shares
    Change vs previous 13F -653 shares

    1.43% of the 13F portfolio, value $10,941,467.

    13F-HR 0001725547-25-000291 filed by MATTERN CAPITAL MANAGEMENT, 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 49,351 shares
    Change vs previous 13F not available

    1.4% of the 13F portfolio, value $11,107,923.

    13F-HR 0001725547-24-005983 filed by MATTERN CAPITAL MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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