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RTW INVESTMENTS, LP: ARGX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of RTW INVESTMENTS, LP on ARGX, newest first. How the timeline and the estimate are built.

RTW INVESTMENTS, LP held 709,446 ARGX 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 709,446 shares
    Change vs previous 13F 0 shares

    5.62% of the 13F portfolio, value $658,202,715.

    13F-HR 0001493215-26-000164 filed by RTW INVESTMENTS, 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 709,446 shares
    Change vs previous 13F +35,949 shares

    5.16% of the 13F portfolio, value $518,072,942.

    13F-HR 0001493215-26-000130 filed by RTW INVESTMENTS, 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 673,497 shares
    Change vs previous 13F 0 shares

    5.67% of the 13F portfolio, value $566,377,302.

    13F-HR 0001493215-26-000060 filed by RTW INVESTMENTS, 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 673,497 shares
    Change vs previous 13F 0 shares

    6.12% of the 13F portfolio, value $496,744,447.

    13F-HR 0001493215-25-000054 filed by RTW INVESTMENTS, 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 673,497 shares
    Change vs previous 13F 0 shares

    5.29% of the 13F portfolio, value $371,245,016.

    13F-HR 0001493215-25-000007 filed by RTW INVESTMENTS, 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 673,497 shares
    Change vs previous 13F 0 shares

    6.1% of the 13F portfolio, value $398,619,302.

    13F-HR 0001493215-25-000003 filed by RTW INVESTMENTS, 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 673,497 shares
    Change vs previous 13F +19,067 shares

    6.26% of the 13F portfolio, value $414,200,655.

    13F-HR 0001493152-25-006608 filed by RTW INVESTMENTS, 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 654,430 shares
    Change vs previous 13F not available

    5.13% of the 13F portfolio, value $354,753,414.

    13F-HR 0001493152-24-045409 filed by RTW INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

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