Cytokinetics Inc

CYTK

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001061983

SEC filings (opens in a new tab)

In the last 90 days, Cytokinetics Inc insiders filed 0 open-market purchases and 15 sales; 482 institutions reported holding it in 13F filings for Q2 2026, worth $13.7B in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in Cytokinetics Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 441; +17 vs. Q4 2025
Shares held: 146.2M; +19.5M (+15.4%) vs. Q4 2025
Total value: $9.63B; +$1.58B (+19.7%) vs. Q4 2025
New holders: 80; 176 more added
Sold out: 63; 135 more reduced

7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CYTK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 441 institutions

Value heldQ1 2026: $9.63B

Institutions holding CYTK and their total value by quarter
Quarter	Holders	Value
Q2 2026	482	$13.7B
Q1 2026	441	$9.63B
Q4 2025	431	$8.87B
Q3 2025	381	$7.75B
Q2 2025	312	$4.55B
Q1 2025	356	$5.48B
Q4 2024	347	$6.18B
Q3 2024	348	$7.20B
Q2 2024	344	$7.34B
Q1 2024	390	$8.26B
Q4 2023	347	$9.54B
Q3 2023	251	$3.22B
Q2 2023	253	$3.55B
Q1 2023	263	$3.83B
Q4 2022	278	$4.88B
Q3 2022	276	$5.08B
Q2 2022	263	$4.16B
Q1 2022	240	$3.52B
Q4 2021	250	$4.16B
Q3 2021	211	$3.22B
Q2 2021	191	$1.50B
Q1 2021	193	$1.74B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Cytokinetics Inc; share changes are against Q4 2025.

Institutions holding CYTK in Q1 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Cornerstone Financial Management LLC	47	$3.10K	0.00%	+8+20.5%	Added
Richardson Capital Management LLC	38	$2.50K	0.00%	+38	New
Rachor Investment Advisory Services, LLC	36	$2.37K	0.00%	−8−18.2%	Reduced
Bell Investment Advisors, Inc	36	$2.37K	0.00%	00.0%	Unchanged
Cullen/Frost Bankers, Inc.	35	$2.31K	0.00%	−317−90.1%	Reduced
Johnson Financial Group, Inc.	35	$2.31K	0.00%	00.0%	Unchanged
SRS Capital Advisors, Inc.	32	$2.11K	0.00%	−338−91.4%	Reduced
Bare Financial Services, Inc	32	$2.11K	0.00%	−23−41.8%	Reduced
Golden State Equity Partners	30	$1.98K	0.00%	+30	New
Hughes Financial Services, LLC	25	$1.65K	0.00%	−3−10.7%	Reduced
Keating Financial Advisory Services, Inc.	21	$1.38K	0.00%	−10−32.3%	Reduced
Arlington Trust Co LLC	21	$1.38K	0.00%	+21	New
Activest Wealth Management	20	$1.32K	0.00%	+1+5.3%	Added
CVA Family Office, LLC	19	$1.25K	0.00%	+19	New
Fortitude Family Office, LLC	18	$1.19K	0.00%	+13+260.0%	Added
True Wealth Design, LLC	18	$1.17K	0.00%	00.0%	Unchanged
Annis Gardner Whiting Capital Advisors, LLC	17	$1.12K	0.00%	−11−39.3%	Reduced
NBT Bank N A	17	$1.12K	0.00%	+17	New
Bogart Wealth, LLC	16	$1.05K	0.00%	+16	New
Avion Wealth	30	$1.00K	0.00%	00.0%	Unchanged
South State Corp.	15	$989	0.00%	00.0%	Unchanged
Dunhill Financial, LLC	12	$813	0.00%	+10+500.0%	Added
Harbour Investments, Inc.	12	$791	0.00%	+10+500.0%	Added
JFS Wealth Advisors, LLC	12	$791	0.00%	+12	New
Financial Management Professionals, Inc.	11	$725	0.00%	+6+120.0%	Added
SHP Wealth Management	11	$725	0.00%	+11	New
Trust Co	10	$659	0.00%	00.0%	Unchanged
Prestige Wealth Management Group LLC	9	$594	0.00%	00.0%	Unchanged
Transamerica Financial Advisors, Inc.	9	$593	0.00%	+8+800.0%	Added
Wealth Preservation Advisors, LLC	9	$593	0.00%	+9	New
Quaker Wealth Management, LLC	8	$528	0.00%	00.0%	Unchanged
LRI Investments, LLC	8	$527	0.00%	−4−33.3%	Reduced
Vermillion Wealth Management, Inc.	7	$461	0.00%	+7	New
Ronald Blue Trust, Inc.	3	$198	0.00%	+3	New
SJS Investment Consulting Inc.	2	$132	0.00%	−120−98.4%	Reduced
Stone House Investment Management, LLC	1	$66	0.00%	+1	New
DiNuzzo Private Wealth, Inc.	1	$66	0.00%	+1	New
Principia Wealth Advisory, LLC	1	$66	0.00%	+1	New
Rialto Wealth Management, LLC	1	$66	0.00%	+1	New
HFM Investment Advisors, LLC	1	$66	0.00%	+1	New
Bay Harbor Wealth Management, LLC	1	$65	0.00%	+1	New
Rosalind Advisors, Inc.	0	$0	0.00%	−195,045−100.0%	Sold out
Two Sigma Advisers, LP	0	$0	0.00%	−174,700−100.0%	Sold out
Renaissance Technologies LLC	0	$0	0.00%	−172,067−100.0%	Sold out
Hood River Capital Management LLC	0	$0	0.00%	−137,597−100.0%	Sold out
Readystate Asset Management LP	0	$0	0.00%	−122,711−100.0%	Sold out
Engineers Gate Manager LP	0	$0	0.00%	−111,544−100.0%	Sold out
Campbell & CO Investment Adviser LLC	0	$0	0.00%	−96,484−100.0%	Sold out
Skandinaviska Enskilda Banken AB (publ)	0	$0	0.00%	−88,684−100.0%	Sold out
Lisanti Capital Growth, LLC	0	$0	0.00%	−74,200−100.0%	Sold out
DekaBank Deutsche Girozentrale	0	$0	0.00%	−57,500−100.0%	Sold out
Resolute Capital Asset Partners LLC	0	$0	0.00%	−65,000−100.0%	Sold out
IMC-Chicago, LLC	0	$0	0.00%	−47,657−100.0%	Sold out
Rhenman & Partners Asset Management AB	0	$0	0.00%	−44,375−100.0%	Sold out
Mirae Asset Securities (USA) Inc.	0	$0	0.00%	−30,067−100.0%	Sold out
HRT Financial LP	0	$0	0.00%	−23,376−100.0%	Sold out
Walleye Trading LLC	0	$0	0.00%	−16,658−100.0%	Sold out
Walleye Capital LLC	0	$0	0.00%	−15,131−100.0%	Sold out
NEOS Investment Management LLC	0	$0	0.00%	−13,278−100.0%	Sold out
Fred Alger Management, LLC	0	$0	0.00%	−10,563−100.0%	Sold out
Lighthouse Investment Partners, LLC	0	$0	0.00%	−10,000−100.0%	Sold out
Polen Capital Management LLC	0	$0	0.00%	−9,584−100.0%	Sold out
Bridgefront Capital, LLC	0	$0	0.00%	−9,484−100.0%	Sold out
Polymer Capital Management (US) LLC	0	$0	0.00%	−8,014−100.0%	Sold out
Havemeyer Place LP	0	$0	0.00%	−7,923−100.0%	Sold out
Cynosure Management, LLC	0	$0	0.00%	−7,354−100.0%	Sold out
Quest Partners LLC	0	$0	0.00%	−7,224−100.0%	Sold out
Banque Pictet & Cie SA	0	$0	0.00%	−6,184−100.0%	Sold out
Alpine Global Management, LLC	0	$0	0.00%	−6,000−100.0%	Sold out
Y-Intercept (Hong Kong) Ltd	0	$0	0.00%	−5,790−100.0%	Sold out
Summit Trail Advisors, LLC	0	$0	0.00%	−5,388−100.0%	Sold out
Virginia Retirement Systems Et Al	0	$0	0.00%	−4,950−100.0%	Sold out
Empowered Funds, LLC	0	$0	0.00%	−4,237−100.0%	Sold out
Headlands Technologies LLC	0	$0	0.00%	−4,199−100.0%	Sold out
OP Asset Management Ltd	0	$0	0.00%	−3,767−100.0%	Sold out
Blueshift Asset Management, LLC	0	$0	0.00%	−3,679−100.0%	Sold out
Meridian Financial, LLC	0	$0	0.00%	−3,583−100.0%	Sold out
Bailard, Inc.	0	$0	0.00%	−3,425−100.0%	Sold out
Ellevest, Inc.	0	$0	0.00%	−3,324−100.0%	Sold out
Pennington Partners & Co., LLC	0	$0	0.00%	−3,278−100.0%	Sold out
Persistent Asset Partners Ltd	0	$0	0.00%	−3,214−100.0%	Sold out
Ascent Group, LLC	0	$0	0.00%	−3,149−100.0%	Sold out
Parallax Volatility Advisers, L.P.	0	$0	0.00%	−3,039−100.0%	Sold out
Acadian Asset Management LLC	0	$0	0.00%	−2,541−100.0%	Sold out
Canada Pension Plan Investment Board	0	$0	0.00%	−2,100−100.0%	Sold out
DV Trading LLC	0	$0	0.00%	−2,005−100.0%	Sold out
Alphadyne Asset Management LP	0	$0	0.00%	−1,233−100.0%	Sold out
TD Waterhouse Canada Inc.	0	$0	0.00%	−500−100.0%	Sold out
Migdal Insurance & Financial Holdings Ltd.	0	$0	0.00%	−284−100.0%	Sold out
Cygnus Capital Advisors, LLC	0	$0	0.00%	−229−100.0%	Sold out
Steward Partners Investment Advisory, LLC	0	$0	0.00%	−200−100.0%	Sold out
Kayne Anderson Rudnick Investment Management LLC	0	$0	0.00%	−180−100.0%	Sold out
Elyxium Wealth, LLC	0	$0	0.00%	−166−100.0%	Sold out
Torren Management, LLC	0	$0	0.00%	−159−100.0%	Sold out
SageView Advisory Group, LLC	0	$0	0.00%	−150−100.0%	Sold out
Quarry LP	0	$0	0.00%	−147−100.0%	Sold out
ZRC Wealth Management, LLC	0	$0	0.00%	−65−100.0%	Sold out
Whittier Trust Co	0	$0	0.00%	−59−100.0%	Sold out
Crewe Advisors LLC	0	$0	0.00%	−36−100.0%	Sold out
Bellevue Asset Management, LLC	0	$0	0.00%	−19−100.0%	Sold out