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CYTK in the 13F filings

Cytokinetics Inc · CUSIP 23282W605

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
28
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 7 listed it in both
Shares listed
29,966,106
combined, among listed positions
Reported value
$2.0bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 15 buyers (opened or added shares) and 16 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +121,345.

Managers listing CYTK in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

28 of 28 holders

ActionFiling
Fidelity (FMR LLC)10,723,140$707munder 0.1%Trimmed-2,084,61215 May 2026 (the filing on sec.gov)
Wellington Management Group LLP8,009,489$528m0.10%Added+72,42615 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,584,321$104munder 0.1%Trimmed-345,79815 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,099,858$72munder 0.1%Trimmed-63,07915 May 2026 (the filing on sec.gov)
Woodline Partners LP1,000,428$66m0.25%Trimmed-648,00015 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC992,545$65m0.08%Newnew15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP898,951$59munder 0.1%Added+145,33415 May 2026 (the filing on sec.gov)
Capital Research Global Investors770,999$51munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.706,631$47munder 0.1%Added+587,41015 May 2026 (the filing on sec.gov)
Marshall Wace LLP656,608$43munder 0.1%Added+319,57715 May 2026 (the filing on sec.gov)
Point72 Asset Management LP626,102$41m0.05%Newnew15 May 2026 (the filing on sec.gov)
Invesco Ltd484,980$32munder 0.1%Added+280,10212 May 2026 (the filing on sec.gov)
AllianceBernstein LP459,087$29munder 0.1%Added+46,12115 May 2026 (the filing on sec.gov)
MFS Investment Management311,649$21munder 0.1%Trimmed-15,55314 May 2026 (the filing on sec.gov)
Two Sigma Investments LP285,008$19munder 0.1%Added+10,99115 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd282,121$19munder 0.1%Added+25,90918 May 2026 (the filing on sec.gov)
Capital World Investors242,041$16munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP216,769$14m0.10%Newnew15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC156,544$10munder 0.1%Trimmed-80,38115 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC101,565$6.7munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Millennium Management LLC97,959$6.5munder 0.1%Trimmed-127,49715 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC77,093$5.1munder 0.1%Added+5,71527 Oct 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP52,227$3.4munder 0.1%Trimmed-290,91714 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP48,961$3.2munder 0.1%Trimmed-52,06915 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP39,470$2.6munder 0.1%Trimmed-135,88013 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
15 in Q3 2024 to 12 in Q2 2026

Tracked managers listing it, at least.

051015202016201720192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
CYTK by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20141$128kn.a.n.a.
Q4 20152$14mn.a.n.a.
Q1 20161$8.6mn.a.n.a.
Q2 20161$3.2mn.a.n.a.
Q3 20161$184kn.a.n.a.
Q1 20171$4.3mn.a.n.a.
Q2 20172$9.9mn.a.n.a.
Q3 20172$18mn.a.n.a.
Q2 20181$374kn.a.n.a.
Q3 20181$349kn.a.n.a.
Q4 20181$224kn.a.n.a.
Q1 20191$513kn.a.n.a.
Q2 20192$7.5mn.a.n.a.
Q3 20192$5.5mn.a.n.a.
Q4 20193$35mn.a.n.a.
Q1 20206$20mn.a.n.a.
Q2 20206$75mn.a.n.a.
Q3 20205$114mn.a.n.a.
Q4 20203$90mn.a.n.a.
Q1 20213$90mn.a.n.a.
Q2 20212$74mn.a.n.a.
Q3 20217$643mn.a.n.a.
Q4 202110$794mn.a.n.a.
Q1 20226$624mn.a.n.a.
Q2 202210$1.0bnn.a.n.a.
Q3 20229$1.0bnn.a.n.a.
Q4 202212$1.1bnn.a.n.a.
Q1 202311$895mn.a.n.a.
Q2 20238$781mn.a.n.a.
Q3 202310$753mn.a.n.a.
Q4 202312$2.4bn84
Q1 202415$1.8bn105
Q2 202416$1.5bn104
Q3 202415$1.5bn103
Q4 202411$1.1bn56
Q1 20259$544m71
Q2 20254$268m12
Q3 20256$1.3bn42
Q4 20258$1.5bn1711
Q1 202611$1.5bn1516
Q2 202612$1.3bn2312

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

CYTK and LLY →CYTK and JNJ →CYTK and VRTX →Choose a stock to compare with CYTK →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own CYTK, latest filings →Back to the 13F Explorer →