Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
CYTK
CYTOKINETICS INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
CYTOKINETICS INC (CYTK) is held by 5 tracked hedge-fund managers, a combined reported value of ~$183.86M; the largest are Ken Griffin, Steven Cohen, Ken Griffin. This quarter: 1 new, 2 trimmed, 1 closed. 3 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Cooling
Gurus holding5
Congress trades3
Price$70.15vs quarter-end+6.43%
Sectors0
This quarter's moves
Top holderKen GriffinNew1
Added0
Trimmed / sold3
Value $20.35M— of portfolio308,8002026 Q1
Value $9.60M— of portfolio145,7002026 Q1
Value $7.98M— of portfolio121,0002026 Q1
Value $7.11M— of portfolio107,9002026 Q1
Zhang LeiHold
Value $5.37M0.1% of portfolio230,7182021 Q1
Value $1.85M— of portfolio28,0002026 Q1
Value $454.8K— of portfolio6,9002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinPUT | $20.35M | — | — |
| Ken GriffinCALL | $9.60M | — | — |
| Izzy EnglanderCALL | $7.98M | — | — |
| Izzy EnglanderPUT | $7.11M | — | — |
| Zhang Lei | $5.37M | 0.1% | Hold |
| Steven CohenCALL | $1.85M | — | — |
| Steven CohenPUT | $454.8K | — | — |