Cytokinetics CYTK Institutional Ownership

NASDAQ CYTK

$65.91 +0.27 (+0.41%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

483 Institutions

Increased 333 68.9%

Unchanged 52 10.8%

Reduced 98 20.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

122.57%

▲+4.02 pp QoQ

Shares Held by Institutions

161.89Mn

of 132.09Mn outstanding

▲+14.88% QoQ

Shares Outstanding

132.09Mn

-29.81Mn held outside 13F filers

Institutional Investors

483

filed 13F for Jun 2026

▲+45 vs prior quarter

Net Shares Added (QoQ)

+20.97Mn

accumulated since last quarter

Value of Holdings

$10.67Bn

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) showed up in the 13F filings of 482 institutional investors as of June 2026.

These investors held 122.6% of outstanding shares in June 2026, up from 118.5% in March 2026.
They increased total shares held in Cytokinetics by 14.88% from the prior quarter, while the number of investors in CYTK increased 55.99% year over year.
Among the 482 funds, 332 bought more Cytokinetics shares, 98 sold down, and 52 held their ground.
In total, institutional investors held 161.89Mn shares in Cytokinetics as of June 2026, up by 20.97Mn shares quarter on quarter, and up 26.44Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Cytokinetics with 20.09Mn shares, accounting for 15.21% of total shares outstanding.
The most significant purchases of CYTK for the quarter ending June 2026 came from 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).
Leading sellers of Cytokinetics shares for the quarter ending June 2026 were 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).
Business Quant data shows the 10 biggest positions in Cytokinetics as of June 2026 are held by 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).

Form 13F Holdings

483 Institutional Holders

Report period 30 Jun, 2026

Total shares held 161.89Mn

Of outstanding 122.57%

#	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 483 holders