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Disclosery

Rock Springs Capital Management LP: ALKS position timeline

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

Rock Springs Capital Management LP held 199,811 ALKS 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 199,811 shares
    Change vs previous 13F +15,825 shares

    0.51% of the 13F portfolio, value $10,469,097.

    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 183,986 shares
    Change vs previous 13F +44,758 shares

    0.38% of the 13F portfolio, value $6,505,745.

    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 139,228 shares
    Change vs previous 13F +32,691 shares

    0.2% of the 13F portfolio, value $3,895,599.

    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 106,537 shares
    Change vs previous 13F not available

    0.19% of the 13F portfolio, value $3,196,110.

    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).