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RA CAPITAL MANAGEMENT, L.P.: JANX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of RA CAPITAL MANAGEMENT, L.P. on JANX, newest first. How the timeline and the estimate are built.

RA CAPITAL MANAGEMENT, L.P. held 11,189,693 JANX 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 11,189,693 shares
    Change vs previous 13F 0 shares

    1.49% of the 13F portfolio, value $171,873,684.

    13F-HR 0001104659-26-097251 filed by RA CAPITAL MANAGEMENT, L.P.
    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 11,189,693 shares
    Change vs previous 13F 0 shares

    1.65% of the 13F portfolio, value $155,536,733.

    13F-HR 0001104659-26-062637 filed by RA CAPITAL MANAGEMENT, L.P.
    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 11,189,693 shares
    Change vs previous 13F 0 shares

    1.58% of the 13F portfolio, value $154,417,763.

    13F-HR 0001104659-26-016482 filed by RA CAPITAL MANAGEMENT, L.P.
    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 11,189,693 shares
    Change vs previous 13F 0 shares

    3.37% of the 13F portfolio, value $273,476,097.

    13F-HR 0001104659-25-112469 filed by RA CAPITAL MANAGEMENT, L.P.
    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 11,189,693 shares
    Change vs previous 13F 0 shares

    4.35% of the 13F portfolio, value $258,481,908.

    13F-HR 0001104659-25-078691 filed by RA CAPITAL MANAGEMENT, L.P.
    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 11,189,693 shares
    Change vs previous 13F +824,041 shares

    5.05% of the 13F portfolio, value $302,121,711.

    13F-HR 0001104659-25-049549 filed by RA CAPITAL MANAGEMENT, L.P.
    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 10,365,652 shares
    Change vs previous 13F +1,200,000 shares

    7.39% of the 13F portfolio, value $554,977,008.

    13F-HR 0001104659-25-014181 filed by RA CAPITAL MANAGEMENT, L.P.
    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 9,165,652 shares
    Change vs previous 13F not available

    4.8% of the 13F portfolio, value $416,395,570.

    13F-HR 0001104659-24-119034 filed by RA CAPITAL MANAGEMENT, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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