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Cormorant Asset Management, LP: JANX position timeline

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

Cormorant Asset Management, LP held 0 JANX shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -650,000 shares

    13F-HR 0001583977-26-000002 filed by Cormorant Asset Management, LP
    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 ended2025-12-31
    13F 650,000 shares
    Change vs previous 13F -200,000 shares

    0.51% of the 13F portfolio, value $8,970,000.

    13F-HR 0001583977-26-000001 filed by Cormorant Asset 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 ended2025-09-30
    13F 850,000 shares
    Change vs previous 13F -650,000 shares

    1.43% of the 13F portfolio, value $20,774,000.

    13F-HR 0001583977-25-000011 filed by Cormorant Asset 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 ended2025-06-30
    13F 1,500,000 shares
    Change vs previous 13F -500,000 shares

    2.58% of the 13F portfolio, value $34,650,000.

    13F-HR 0001583977-25-000007 filed by Cormorant Asset 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 ended2025-03-31
    13F 2,000,000 shares
    Change vs previous 13F -100,000 shares

    4.09% of the 13F portfolio, value $54,000,000.

    13F-HR 0001583977-25-000005 filed by Cormorant Asset 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 ended2024-12-31
    13F 2,100,000 shares
    Change vs previous 13F +1,050,000 shares

    6.17% of the 13F portfolio, value $112,434,000.

    13F-HR 0001583977-25-000001 filed by Cormorant Asset 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 ended2024-09-30
    13F 1,050,000 shares
    Change vs previous 13F not available

    2.53% of the 13F portfolio, value $47,701,500.

    13F-HR 0001583977-24-000006 filed by Cormorant Asset Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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