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PARTHENON LLC: IBM position timeline

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

PARTHENON LLC held 6,033 IBM shares at 2026-06-30 per its 13F-HR filed 2026-07-23.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,033 shares
    Change vs previous 13F -77 shares

    0.18% of the 13F portfolio, value $1,696,540.

    13F-HR 0001088859-26-000004 filed by PARTHENON 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 6,110 shares
    Change vs previous 13F -164 shares

    0.17% of the 13F portfolio, value $1,481,003.

    13F-HR 0001088859-26-000002 filed by PARTHENON 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 6,274 shares
    Change vs previous 13F -1,134 shares

    0.2% of the 13F portfolio, value $1,858,422.

    13F-HR 0001088859-26-000001 filed by PARTHENON 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 7,408 shares
    Change vs previous 13F -1,011 shares

    0.23% of the 13F portfolio, value $2,090,241.

    13F-HR 0001088859-25-000003 filed by PARTHENON 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 8,419 shares
    Change vs previous 13F -923 shares

    0.28% of the 13F portfolio, value $2,481,753.

    13F-HR 0001085146-25-004248 filed by PARTHENON 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 9,342 shares
    Change vs previous 13F -500 shares

    0.29% of the 13F portfolio, value $2,322,982.

    13F-HR 0001085146-25-002554 filed by PARTHENON 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 9,842 shares
    Change vs previous 13F 0 shares

    0.26% of the 13F portfolio, value $2,163,567.

    13F-HR 0001085146-25-000674 filed by PARTHENON 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 9,842 shares
    Change vs previous 13F not available

    0.26% of the 13F portfolio, value $2,175,869.

    13F-HR 0001085146-24-005366 filed by PARTHENON LLC
    Filed (acceptance time not in the bulk data set), ingested

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