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Rock Springs Capital Management LP: ARDX position timeline

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

Rock Springs Capital Management LP held 2,241,769 ARDX 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 2,241,769 shares
    Change vs previous 13F -57,704 shares

    0.56% of the 13F portfolio, value $11,433,022.

    13F-HR 0001172661-26-003527 filed by Rock Springs 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 2,299,473 shares
    Change vs previous 13F 0 shares

    0.81% of the 13F portfolio, value $13,773,843.

    13F-HR 0001172661-26-002225 filed by Rock Springs 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 2,299,473 shares
    Change vs previous 13F +13,200 shares

    0.69% of the 13F portfolio, value $13,405,928.

    13F-HR 0001172661-26-000917 filed by Rock Springs 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 2,286,273 shares
    Change vs previous 13F 0 shares

    0.74% of the 13F portfolio, value $12,597,364.

    13F-HR 0001172661-25-004882 filed by Rock Springs 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 2,286,273 shares
    Change vs previous 13F +681,298 shares

    0.56% of the 13F portfolio, value $8,962,190.

    13F-HR 0001172661-25-003273 filed by Rock Springs 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 1,604,975 shares
    Change vs previous 13F +141,346 shares

    0.45% of the 13F portfolio, value $7,880,427.

    13F-HR 0001172661-25-001953 filed by Rock Springs 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 1,463,629 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $7,420,599.

    13F-HR 0001172661-25-000867 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

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