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Hudson Bay Capital Management LP: BMRN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Hudson Bay Capital Management LP on BMRN, newest first. How the timeline and the estimate are built.

Hudson Bay Capital Management LP held 825,002 BMRN 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 825,002 shares
    Change vs previous 13F -149,774 shares

    0.22% of the 13F portfolio, value $47,206,614.

    13F-HR 0001393825-26-000058 filed by Hudson Bay Capital Management LP
    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 974,776 shares
    Change vs previous 13F +304,774 shares

    0.33% of the 13F portfolio, value $55,065,096.

    13F-HR 0001393825-26-000041 filed by Hudson Bay Capital Management LP
    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 670,002 shares
    Change vs previous 13F -23,892 shares

    0.23% of the 13F portfolio, value $39,818,219.

    13F-HR 0001393825-26-000021 filed by Hudson Bay Capital Management LP
    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/A 693,894 shares
    Change vs previous 13F +167,474 shares

    0.23% of the 13F portfolio, value $37,581,299.

    13F-HR/A 0001393825-25-000093 filed by Hudson Bay Capital Management LP
    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/A 526,420 shares
    Change vs previous 13F -60,425 shares

    0.19% of the 13F portfolio, value $28,937,307.

    13F-HR/A 0001393825-25-000066 filed by Hudson Bay Capital Management LP
    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 586,845 shares
    Change vs previous 13F +126,845 shares

    0.26% of the 13F portfolio, value $41,484,073.

    13F-HR 0001393825-25-000010 filed by Hudson Bay Capital Management LP
    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 460,000 shares
    Change vs previous 13F +18,800 shares

    0.18% of the 13F portfolio, value $30,235,800.

    13F-HR 0002033916-25-000027 filed by Hudson Bay Capital Management LP
    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 441,200 shares
    Change vs previous 13F not available

    0.21% of the 13F portfolio, value $31,011,948.

    13F-HR 0002033916-24-000083 filed by Hudson Bay Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

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