Cytokinetics CYTK Institutional Ownership

NASDAQ CYTK

$72.72 -1.23 (-1.66%)

As of: Sep 4, 2026 · 3:59 PM EDT

Institutions by Trading Activity

481 Institutions

Increased 332 69.0%

Unchanged 51 10.6%

Reduced 98 20.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

122.56%

▲+3.86 pp QoQ

Shares Held by Institutions

161.89Mn

of 132.09Mn outstanding

▲+14.88% QoQ

Shares Outstanding

132.09Mn

-29.80Mn held outside 13F filers

Institutional Investors

481

filed 13F for Jun 2026

▲+44 vs prior quarter

Net Shares Added (QoQ)

+20.97Mn

accumulated since last quarter

Value of Holdings

$11.97Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Cytokinetics Inc (NASDAQ:CYTK) is held by 481 institutional investors per 13F filings through June 2026.

These investors collectively held 122.6% of Cytokinetics's outstanding shares in June 2026, up from 118.7% in March 2026.
They increased total shares held in CYTK by 14.88% quarter over quarter, and investors in Cytokinetics increased 55.66% from a year ago.
Among the 481 funds, 332 bought more Cytokinetics shares, 98 sold down, and 51 held their ground.
Institutional investors collectively held 161.89Mn shares in Cytokinetics as of June 2026, up by 20.97Mn shares quarter on quarter, and up 24.83Mn shares year over year.
BlackRock, Inc. is the top holder of Cytokinetics as of June 30, 2026, with 20.09Mn shares representing 15.21% of outstanding stock.
Leading buyers of Cytokinetics shares for the quarter ending June 2026 were BlackRock, Inc. (3.55Mn), Avoro Capital Advisors LLC (1.67Mn), Sixth Street Partners Management Company, L.P. (1.57Mn), Bank Of America Corp /De/ (1.51Mn), T. Rowe Price Investment Management, Inc. (1.19Mn).
The biggest sellers of Cytokinetics for the quarter ending June 2026 included FMR LLC (5.69Mn), WELLINGTON MANAGEMENT GROUP LLP (1.08Mn), UBS Group AG (905.99K), Deep Track Capital, LP (674.32K), CITADEL ADVISORS LLC (458.91K).
Cytokinetics's 10 largest shareholders as of June 2026 include BlackRock, Inc. (20.09Mn), T. Rowe Price Investment Management, Inc. (18.72Mn), WELLINGTON MANAGEMENT GROUP LLP (6.93Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (6.71Mn), State Street Corp (6.49Mn), VANGUARD CAPITAL MANAGEMENT LLC (6.12Mn), FMR LLC (5.03Mn), Avoro Capital Advisors LLC (5.0Mn), Bank Of America Corp /De/ (4.64Mn), GEODE CAPITAL MANAGEMENT, LLC (3.71Mn) per Business Quant data.

Form 13F Holdings

481 Institutional Holders

Report period 30 Jun, 2026

Total shares held 161.89Mn

Of outstanding 122.56%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	20,094,362	15.21%	▲3,546,351	+21.43%	$1.71Bn
2	T. Rowe Price Investment Management, Inc.	0001897612	18,718,498	14.17%	▲1,194,658	+6.82%	$1.59Mn
3	WELLINGTON MANAGEMENT GROUP LLP	0000902219	6,931,770	5.25%	▼1,077,719	-13.46%	$590.52Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	6,711,799	5.08%	▲868,017	+14.85%	$571.78Mn
5	State Street Corp	0000093751	6,494,233	4.92%	▲749,040	+13.04%	$553.24Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	6,117,515	4.63%	▲628,881	+11.46%	$521.15Mn
7	FMR LLC	0000315066	5,031,782	3.81%	▼5,691,358	-53.08%	$428.66Mn
8	Avoro Capital Advisors LLC	0001633313	4,999,999	3.79%	▲1,666,666	+50.00%	$425.95Mn
9	Bank Of America Corp /De/	0000070858	4,635,709	3.51%	▲1,510,273	+48.32%	$394.92Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,712,501	2.81%	▲497,086	+15.46%	$316.33Mn
11	RTW INVESTMENTS, LP	0001493215	2,862,003	2.17%	▲140,845	+5.18%	$243.81Mn
12	Polar Capital Holdings Plc	0001837309	2,253,649	1.71%	▲592,401	+35.66%	$191.99Mn
13	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,958,946	1.48%	▲374,625	+23.65%	$166.88K
14	Goldman Sachs Group Inc	0000886982	1,761,588	1.33%	▼444,170	-20.14%	$150.07Mn
15	Capital Research Global Investors	0001422848	1,686,625	1.28%	▲915,626	+118.76%	$143.68Mn
16	Northern Trust Corp	0000073124	1,647,345	1.25%	▲205,711	+14.27%	$140.34Mn
17	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	0001644956	1,603,442	1.21%	▲515,851	+47.43%	$136.60Mn
18	Integral Health Asset Management, LLC	0001773206	1,600,000	1.21%	0	0.00%	$136.30Mn
19	Jpmorgan Chase & Co	0000019617	1,588,895	1.20%	▲685,090	+75.80%	$139.15Mn
20	Point72 Asset Management, L.P.	0001603466	1,587,712	1.20%	▲961,610	+153.59%	$135.26Mn

Showing 1 to 20 of 481 holders