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Assenagon Asset Management S.A.: BSX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Assenagon Asset Management S.A. on BSX, newest first. How the timeline and the estimate are built.

Assenagon Asset Management S.A. held 4,173,559 BSX shares at 2026-06-30 per its 13F-HR/A filed 2026-08-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 4,173,559 shares
    Change vs previous 13F -5,884,377 shares

    0.23% of the 13F portfolio, value $178,127,498.

    13F-HR/A 0001546007-26-000007 filed by Assenagon Asset Management S.A.
    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 10,057,936 shares
    Change vs previous 13F +5,751,760 shares

    1.01% of the 13F portfolio, value $631,135,484.

    13F-HR 0001546007-26-000003 filed by Assenagon Asset Management S.A.
    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 4,306,176 shares
    Change vs previous 13F +1,391,559 shares

    0.62% of the 13F portfolio, value $410,593,882.

    13F-HR 0001546007-26-000002 filed by Assenagon Asset Management S.A.
    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 2,914,617 shares
    Change vs previous 13F +243,100 shares

    0.42% of the 13F portfolio, value $284,554,058.

    13F-HR 0001546007-25-000008 filed by Assenagon Asset Management S.A.
    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 2,671,517 shares
    Change vs previous 13F +185,821 shares

    0.46% of the 13F portfolio, value $286,947,641.

    13F-HR 0001546007-25-000005 filed by Assenagon Asset Management S.A.
    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 2,485,696 shares
    Change vs previous 13F +1,536,663 shares

    0.45% of the 13F portfolio, value $250,757,012.

    13F-HR 0001546007-25-000003 filed by Assenagon Asset Management S.A.
    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 949,033 shares
    Change vs previous 13F -2,948,084 shares

    0.15% of the 13F portfolio, value $84,767,628.

    13F-HR 0001546007-25-000002 filed by Assenagon Asset Management S.A.
    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 3,897,117 shares
    Change vs previous 13F not available

    0.67% of the 13F portfolio, value $326,578,405.

    13F-HR 0001546007-24-000010 filed by Assenagon Asset Management S.A.
    Filed (acceptance time not in the bulk data set), ingested

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