Cytokinetics Ownership | Who Owns Cytokinetics?

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Cytokinetics Ownership Summary

Cytokinetics is owned by 120.93% institutional investors, 0.64% insiders. T. rowe price investment management is the largest institutional shareholder, holding 15.97% of CYTK shares. Vanguard Health Care Inv is the top mutual fund, with 3.41% of its assets in Cytokinetics shares.

CYTK Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Cytokinetics	120.93%	0.64%	-21.57%
Sector	Healthcare Stocks	42.54%	10.82%	46.64%
Industry	Biotech Stocks	45.21%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
T. rowe price investment management	19.08M	15.97%	$1.05B
Blackrock	14.67M	14.40%	$794.97M
Blackrock funding, inc. /de	15.53M	13.00%	$853.30M
Fmr	13.09M	10.96%	$719.52M
Vanguard group	11.86M	9.93%	$651.65M
Wellington management group llp	7.41M	6.20%	$407.17M
Tudor investment corp et al	6.00M	5.02%	$6.86M
State street	5.62M	4.70%	$308.73M
Deep track capital, lp	4.30M	3.60%	$236.33M
Geode capital management	3.04M	2.54%	$167.11M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Rp management	980.39K	22.73%	$51.76M
Sarissa capital management lp	588.36K	17.93%	$32.34M
Foresite capital management iv	458.30K	13.79%	$25.19M
Rosalind advisors	400.00K	7.51%	$21.98M
Deep track capital, lp	4.30M	6.60%	$236.33M
Boxer capital	2.10M	5.99%	$113.78M
Melqart asset management (uk)	783.77K	5.75%	$43.08M
Dafna capital management	394.94K	5.36%	$21.71M
Integral health asset management	1.40M	5.21%	$76.94M
Nationale-nederlanden powszechne towarzystwo emerytalne	1.19M	5.06%	$65.54M

Top Buyers

Holder	Shares	% Assets	Change
Tudor investment corp et al	6.00M	0.01%	6.00M
Blackrock	14.67M	0.02%	2.26M
Fmr	13.09M	0.04%	1.82M
T. rowe price investment management	19.08M	0.64%	1.48M
Woodline partners lp	1.65M	0.43%	1.44M

Top Sellers

Holder	Shares	% Assets	Change
Darwin global management	-	-	-4.58M
Vestal point capital, lp	725.00K	1.80%	-2.25M
Pfm health sciences, lp	-	-	-1.76M
Westfield capital management co lp	-	-	-1.31M
Ubs group	1.80M	0.02%	-1.27M

New Positions

Holder	Shares	% Assets	Change	Value
Tudor investment corp et al	6.00M	0.01%	6.00M	$6.86M
Norges bank	989.72K	0.01%	989.72K	$46.56M
Foresite capital management iv	458.30K	13.79%	458.30K	$25.19M
Affinity asset advisors	350.00K	1.68%	350.00K	$19.24M
First turn management	254.79K	2.10%	254.79K	$14.00M

Sold Out

Holder	Change
New england capital financial advisors	-1.00
Financial gravity asset management	-2.00
Ameritas advisory services	-4.00
American capital advisory	-5.00
Institutional & family asset management	-7.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	403	16.47%	144,458,231	4.66%	120	0.91%	217	25.43%	105	-0.94%
Jun 30, 2025	344	-10.88%	137,969,518	1.88%	115	0.88%	171	-14.50%	106	-0.93%
Mar 31, 2025	25	-93.40%	16,158,180	-87.73%	13	0.11%	15	-91.28%	5	-96.09%
Dec 31, 2024	374	-5.32%	131,318,059	-2.91%	111	0.84%	166	-12.17%	128	29.29%
Sep 30, 2024	390	0.52%	135,010,879	-0.29%	114	0.65%	187	-6.50%	99	-2.94%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Health Care Inv	4.07M	3.41%	-
iShares Core S&P Mid-Cap ETF	3.89M	3.25%	-
Vanguard US Total Market Shares ETF	3.75M	3.15%	128.42K
Vanguard Total Stock Mkt Idx Inv	3.72M	3.11%	-77.64K
Vanguard Small Cap Index	2.90M	2.42%	-19.00K
iShares Russell 2000 ETF	2.81M	2.35%	-
T. Rowe Price Mid-Cap Growth	2.50M	2.09%	245.40K
T. Rowe Price Capital Appreciation	2.44M	2.04%	-556.00
T. Rowe Price US Mid-Cap Growth Equity	2.25M	1.88%	267.30K
T. Rowe Price Small-Cap Value	2.10M	1.75%	-4.81K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 22, 2025	WIERENGA WENDELL	-	Sell	$1.32M
Dec 16, 2025	Malik Fady Ibraham	EVP Research & Development	Sell	$134.73K
Dec 08, 2025	Callos Andrew	EVP, Chief Commercial Officer	Sell	$68.73K
Dec 05, 2025	Callos Andrew	EVP, Chief Commercial Officer	Sell	$3.46M
Dec 02, 2025	HENDERSON JOHN T	-	Sell	$559.13K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	19
2025 Q3	-	15
2025 Q2	-	19
2025 Q1	-	22
2024 Q4	-	20

CYTK Ownership FAQ

Who Owns Cytokinetics?

Cytokinetics shareholders are primarily institutional investors at 120.93%, followed by 0.64% insiders and -21.57% retail investors. The average institutional ownership in Cytokinetics's industry, Biotech Stocks , is 45.21%, which Cytokinetics exceeds.

Who owns the most shares of Cytokinetics?

Cytokinetics’s largest shareholders are T. rowe price investment management (19.08M shares, 15.97%), Blackrock (14.67M shares, 14.40%), and Blackrock funding, inc. /de (15.53M shares, 13.00%). Together, they hold 43.37% of Cytokinetics’s total shares outstanding.

Does Blackrock own Cytokinetics?

Yes, BlackRock owns 14.40% of Cytokinetics, totaling 14.67M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 794.97M$. In the last quarter, BlackRock increased its holdings by 2.26M shares, a 18.19% change.

Who is Cytokinetics’s biggest shareholder by percentage of total assets invested?

Rp management is Cytokinetics’s biggest shareholder by percentage of total assets invested, with 22.73% of its assets in 980.39K Cytokinetics shares, valued at 51.76M$.

Who is the top mutual fund holder of Cytokinetics shares?

Vanguard Health Care Inv is the top mutual fund holder of Cytokinetics shares, with 3.41% of its total shares outstanding invested in 4.07M Cytokinetics shares.

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