Rock Springs Capital Management LP: CYTK position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Rock Springs Capital Management LP on CYTK, newest first. How the timeline and the estimate are built.
Rock Springs Capital Management LP held 187,980 CYTK shares at 2026-06-30 per its 13F-HR filed 2026-08-14.
the latest 13F is the newest step
- period ended2026-06-3013F 187,980 sharesChange vs previous 13F +142,616 shares
0.78% of the 13F portfolio, value $16,014,016.
13F-HR 0001172661-26-003527 filed by Rock Springs Capital Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F 45,364 sharesChange vs previous 13F +9,511 shares
0.18% of the 13F portfolio, value $2,989,941.
13F-HR 0001172661-26-002225 filed by Rock Springs Capital Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 35,853 sharesChange vs previous 13F +35,853 shares
0.12% of the 13F portfolio, value $2,278,100.
13F-HR 0001172661-26-000917 filed by Rock Springs Capital Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-12-3113F 0 sharesChange vs previous 13F -206,108 shares
13F-HR 0001172661-25-000867 filed by Rock Springs Capital Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
- period ended2024-09-3013F 206,108 sharesChange vs previous 13F not available
0.35% of the 13F portfolio, value $10,882,502.
13F-HR 0001172661-24-004721 filed by Rock Springs Capital Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).