Ticker · CUSIP 23282W605

CYTK

CYTOKINETICS INC

Healthcare·Biotechnology

···Share

Holders (tracked)

Combined shares

14,234,260

Combined value

$904.17M

Last close

$66.71

Quarter

2025Q4

Price is +5.0% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$66.71+27.23 (+68.97%)H $70.10 · L $29.84 · Avg Vol 1.9M

Insider sellCongress buyCongress sell

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 8.

SEC event timeline

26 events

Blum Robert I · President & CEO
2026-04-15
Sold $490.3K @ $65.38
Insider sell
Callos Andrew · EVP, Chief Commercial Officer
2026-04-15
Sold $491.8K @ $66.02
Insider sell
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−223,128 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+105,618 shares · 2025Q4
Position
Two Sigma Investments opened position2026-02-17
+274,017 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−117,077 shares · 2025Q4
Position
Steve Cohen (Point72) exited2026-02-17
−471,482 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−436,729 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+17,100 shares · 2025Q4
Position
Wellington Management added2026-02-17
+528,502 shares · 2025Q4
Position
Ron Baron (Baron Capital / BAMCO) exited2026-02-17
−24,500 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−276,365 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−117,900 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+807,070 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) added2026-02-09
+61,298 shares · 2025Q4
Position
Wellington Management trimmed2025-11-14
−419,118 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+165,551 shares · 2025Q3
Position
Steve Cohen (Point72) opened position2025-11-14
+471,482 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−5,481 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−116,144 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+500,871 shares · 2025Q3
Position
Ron Baron (Baron Capital / BAMCO) opened position2025-11-14
+24,500 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+279,800 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−1,184,072 shares · 2025Q3
Position
Ken Fisher (Fisher Asset Mgmt) added2025-11-12
+27,907 shares · 2025Q3
Position
Norges Bank (Norway SWF) added2025-11-12
+192,973 shares · 2024Q3
Position

Insider activity

Last 30 days

Net (open-market)

−$982.1K

Buys

0 · $0

Sells

2 · $982.1K

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-15	HENDERSON JOHN T Director	A	325	$65.37	$21.2K
04-15	WIERENGA WENDELL Director	A	95	$65.37	$6.2K
04-15	Blum Robert I President & CEO · Officer, Director	S	7,500	$65.38	$490.3K
04-15	Wysenski Nancy Director	A	95	$65.37	$6.2K
04-15	Kaye Edward M. MD Director	A	191	$65.37	$12.5K
04-15	Daly James M Director	A	191	$65.37	$12.5K
04-15	Callos Andrew EVP, Chief Commercial Officer · Officer	S	7,449	$66.02	$491.8K
04-15	Harrington Robert Arthur Director	A	191	$65.37	$12.5K

View full insider history for CYTK →

Follow-the-investor returns

If you'd copied each holder of CYTK…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Izzy Englander (Millennium Mgmt)	2016Q1	$38.03	+75.4%	$15.0M
AQR Capital Management	2016Q1	$40.47	+64.9%	$15.8M
Wellington Management	2016Q1	$46.95	+42.1%	$529.5M
Renaissance Technologies	2016Q1	$55.26	+20.7%	$11.5M
D.E. Shaw & Co.	2016Q1	$56.05	+19.0%	$5.4M
D.E. Shaw & Co.	2016Q1	$56.05	+19.0%	$5.4M
Paul Tudor Jones (Tudor Investment)	2016Q1	$56.89	+17.3%	$307K
Paul Tudor Jones (Tudor Investment)	2016Q1	$56.89	+17.3%	$307K
Steve Cohen (Point72)	2019Q2	$59.20	+12.7%	$1.7M
Steve Cohen (Point72)	2019Q2	$59.20	+12.7%	$1.7M
Two Sigma Investments	2016Q1	$62.64	+6.5%	$18.3M
Ken Griffin (Citadel Advisors)	2016Q1	$63.08	+5.8%	$23.6M
Ken Griffin (Citadel Advisors)	2016Q1	$63.08	+5.8%	$23.6M
Ken Griffin (Citadel Advisors)	2016Q1	$63.08	+5.8%	$23.6M
T. Rowe Price	2017Q3	$63.92	+4.4%	$128.8M
Ken Fisher (Fisher Asset Mgmt)	2023Q4	$69.08	-3.4%	$54.9M
Norges Bank (Norway SWF)	2016Q4	$10771.22	-99.4%	$53.8M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions3

Norges Bank (Norway SWF)
+807,070
$51.3M
Two Sigma Investments
+274,017
$17.4M
Paul Tudor Jones (Tudor Investment)
+17,100
$1.1M

Added to3

Wellington Management
+528,502
$33.6M
D.E. Shaw & Co.
+105,618
$6.7M
Ken Fisher (Fisher Asset Mgmt)
+61,298
$3.9M

Trimmed5

AQR Capital Management
−276,365
$17.2M
Ken Griffin (Citadel Advisors)
−223,128
$14.2M
Renaissance Technologies
−117,900
$7.5M
Izzy Englander (Millennium Mgmt)
−117,077
$7.4M
T. Rowe Price
−436,729
$28K

Exited2

Steve Cohen (Point72)
−471,482
$25.9M
Ron Baron (Baron Capital / BAMCO)
−24,500
$1.3M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	12	17,573,161	$22.58B	—
2022Q2	14	23,492,622	$30.47B	+2
2022Q3	15	22,316,039	$1.08B	+1
2022Q4	16	24,491,345	$1.12B	+1
2023Q1	12	24,682,748	$868.6M	-4
2023Q2	12	27,273,460	$889.7M	—
2023Q3	11	19,767,826	$582.4M	-1
2023Q4	19	24,923,873	$2.08B	+8
2024Q1	19	24,369,941	$1.71B	—
2024Q2	17	28,329,014	$1.53B	-2
2024Q3	17	15,087,173	$796.6M	—
2024Q4	14	6,726,368	$316.4M	-3
2025Q1	13	14,566,012	$585.4M	-1
2025Q2	14	14,308,584	$472.8M	+1
2025Q3	16	14,096,436	$774.7M	+2
2025Q4	17	14,234,260	$904.2M	+1

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-10-09	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-06-17	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-06-11	Lisa McClain	Buy	$1K – $15K	PDF ↗

Who owns CYTK

17 super-investors · 2025Q4

Tracked stake

14.23M

Combined value

$904M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New4Added4Trim7Sold2

#	Manager	Shares	Value	% of book	Last action
1	Wellington Management	7.94M	$504M	0.1%	Added+528.5K
2	T. Rowe Price	1.93M	$123M	0.0%	Trim−436.7K
3	Ken Griffin Citadel Advisors	1.16M	$74M	0.0%	Trim−223.1K
4	Ken Fisher Fisher Asset Mgmt	822.9K	$52M	0.0%	Added+61.3K
5	Norges Bank Norway SWF	807.1K	$51M	0.0%	New+807.1K
6	Ken Griffin Citadel Advisors	354.4K	$23M	0.0%	Trim−223.1K
7	Two Sigma Investments	274.0K	$17M	0.0%	New+274.0K
8	AQR Capital Management	236.9K	$15M	0.0%	Trim−276.4K
9	Izzy Englander Millennium Mgmt	225.5K	$14M	0.0%	Trim−117.1K
10	Renaissance Technologies	172.1K	$11M	0.0%	Trim−117.9K
11	D.E. Shaw & Co.	119.2K	$8M	0.0%	Added+105.6K
12	D.E. Shaw & Co.	81.5K	$5M	0.0%	Added+105.6K
13	Ken Griffin Citadel Advisors	56.3K	$4M	0.0%	Trim−223.1K
14	Steve Cohen Point72	26.1K	$2M	0.0%	Sold−471.5K
15	Paul Tudor Jones Tudor Investment	12.5K	$794K	0.0%	New+17.1K
16	Steve Cohen Point72	11.1K	$705K	0.0%	Sold−471.5K
17	Paul Tudor Jones Tudor Investment	4.6K	$292K	0.0%	New+17.1K

Recent moves

20 transactions

SOLDRon Baron (Baron Capital / BAMCO)
−24,500 · 2025Q4
ADDWellington Management
+528,502 · 2025Q4
ADDD.E. Shaw & Co.
+105,618 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−223,128 · 2025Q4
SOLDSteve Cohen (Point72)
−471,482 · 2025Q4
TRIMAQR Capital Management
−276,365 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−117,077 · 2025Q4
TRIMT. Rowe Price
−436,729 · 2025Q4
NEWTwo Sigma Investments
+274,017 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+17,100 · 2025Q4
TRIMRenaissance Technologies
−117,900 · 2025Q4
NEWNorges Bank (Norway SWF)
+807,070 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+61,298 · 2025Q4
TRIMWellington Management
−419,118 · 2025Q3
TRIMD.E. Shaw & Co.
−5,481 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−116,144 · 2025Q3
ADDT. Rowe Price
+500,871 · 2025Q3
NEWSteve Cohen (Point72)
+471,482 · 2025Q3
NEWRon Baron (Baron Capital / BAMCO)
+24,500 · 2025Q3
ADDAQR Capital Management
+165,551 · 2025Q3

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