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Disclosery

ADVENT CAPITAL MANAGEMENT /DE/: AMGN position timeline

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

ADVENT CAPITAL MANAGEMENT /DE/ held 0 AMGN shares at 2025-12-31 per its 13F-HR filed 2026-02-09.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -16,000 shares

    13F-HR 0001140361-26-004346 filed by ADVENT CAPITAL MANAGEMENT /DE/
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-09-30
    13F 16,000 shares
    Change vs previous 13F +1,000 shares

    0.1% of the 13F portfolio, value $4,515,200.

    13F-HR 0001140361-25-041917 filed by ADVENT CAPITAL MANAGEMENT /DE/
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-06-30
    13F 15,000 shares
    Change vs previous 13F +15,000 shares

    0.09% of the 13F portfolio, value $4,188,150.

    13F-HR 0001140361-25-030722 filed by ADVENT CAPITAL MANAGEMENT /DE/
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -10,000 shares

    13F-HR 0001140361-25-018377 filed by ADVENT CAPITAL MANAGEMENT /DE/
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  5. period ended2024-12-31
    13F 10,000 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $2,606,400.

    13F-HR 0001140361-25-004367 filed by ADVENT CAPITAL MANAGEMENT /DE/
    Filed (acceptance time not in the bulk data set), ingested

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