Cytokinetics, Incorporated
US ˙ NasdaqGS ˙ US23282W6057

SecurityCYTK / Cytokinetics, Incorporated
InstitutionWalleye Capital LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Walleye Capital LLC ownership in CYTK / Cytokinetics, Incorporated

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 0 shares of Cytokinetics, Incorporated (US:CYTK) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,131 shares of Cytokinetics, Incorporated. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (CYTK) in the form of stock options. The firm currently holds call options representing 25,900 of underlying shares valued at $1,707,069 USD and put options representing 10,200 of underlying shares valued at $672,282 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CYTK / Cytokinetics, Incorporated Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F/A-1 CYTOKINETICS COM NEW 23282W605 0 -15,131 -100.00 0 -100.00
2026-05-08 2026-03-31 13F CYTOKINETICS COM NEW 23282W605 0 -15,131 0
2026-02-13 2025-12-31 13F CYTOKINETICS COM NEW 23282W605 15,131 10,928 260.00 961 317.83 0.0029
2025-11-14 2025-09-30 13F CYTOKINETICS COM NEW 23282W605 4,203 4,203 231 0.0009
2025-08-13 2025-06-30 13F CYTOKINETICS COM NEW 23282W605 0 -14,130 -100.00 0 -100.00
2025-05-14 2025-03-31 13F CYTOKINETICS COM NEW 23282W605 14,130 14,130 568 0.0026
2024-08-14 2024-06-30 13F CYTOKINETICS COM NEW 23282W605 0 -105,662 -100.00 0 -100.00
2024-05-15 2024-03-31 13F CYTOKINETICS COM NEW 23282W605 105,662 67,999 180.55 7,408 135.59 0.0132
2024-02-14 2023-12-31 13F CYTOKINETICS COM NEW 23282W605 37,663 37,663 3,144 0.0067
2023-11-21 2023-09-30 13F/A-1 CYTOKINETICS COM NEW 23282W605 0 -25,323 -100.00 0 -100.00
2023-11-14 2023-09-30 13F CYTOKINETICS COM NEW 23282W605 0 -25,323 0
2023-08-14 2023-06-30 13F CYTOKINETICS COM NEW 23282W605 25,323 25,323 826 0.0030
2023-05-15 2023-03-31 13F CYTOKINETICS COM NEW 23282W605 0 -214,204 -100.00 0 -100.00
2023-02-14 2022-12-31 13F CYTOKINETICS COM NEW 23282W605 214,204 99,560 86.84 9,815 76.67 0.1790
2022-11-14 2022-09-30 13F CYTOKINETICS COM NEW 23282W605 114,644 29,784 35.10 5,555 66.62 0.1060
2022-08-19 2022-06-30 13F/A-1 CYTOKINETICS COM NEW 23282W605 84,860 6,580 8.41 3,334 15.72 0.0919
2022-08-08 2022-06-30 13F CYTOKINETICS COM NEW 23282W605 84,860 6,580 3,334 0.0919
2022-05-27 2022-03-31 13F/A-01 CYTOKINETICS COM NEW 23282W605 78,280 78,280 2,881 0.0770
2022-05-16 2022-03-31 13F CYTOKINETICS COM NEW 23282W605 78,280 78,280 2,881 0.0587
2020-08-14 2020-06-30 13F CYTOKINETICS COM NEW 23282W605 0 -31,515 -100.00 0 -100.00
2020-05-15 2020-03-31 13F CYTOKINETICS COM NEW 23282W605 31,515 65 0.21 372 11.71 0.0819
2020-02-14 2019-12-31 13F CYTOKINETICS COM NEW 23282W605 31,450 31,450 333 0.0216
2019-11-14 2019-09-30 13F CYTOKINETICS COM NEW 23282W605 0 -9,600 -100.00 0 -100.00
2019-08-14 2019-06-30 13F CYTOKINETICS COM NEW 23282W605 9,600 9,600 108 0.0119
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A CYTOKINETICS COM NEW Call 25,900 -4.07 1,707 -0.47 n/a n/a n/a
2026-05-08 2026-03-31 13F CYTOKINETICS COM NEW Call 25,900 1,707 n/a n/a n/a
2026-02-13 2025-12-31 13F CYTOKINETICS COM NEW Call 27,000 31.71 1,716 52.31 n/a n/a n/a
2025-11-14 2025-09-30 13F CYTOKINETICS COM NEW Call 20,500 -75.91 1,127 -59.94 n/a n/a n/a
2025-08-13 2025-06-30 13F CYTOKINETICS COM NEW Call 85,100 319.21 2,812 244.91 n/a n/a n/a
2025-05-14 2025-03-31 13F CYTOKINETICS COM NEW Call 20,300 816 n/a n/a n/a
2024-11-14 2024-09-30 13F CYTOKINETICS COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F CYTOKINETICS COM NEW Call 11,400 -79.57 618 -84.23 n/a n/a n/a
2024-05-15 2024-03-31 13F CYTOKINETICS COM NEW Call 55,800 3,620.00 3,912 3,029.60 n/a n/a n/a
2024-02-14 2023-12-31 13F CYTOKINETICS COM NEW Call 1,500 -92.35 125 -78.34 n/a n/a n/a
2023-11-21 2023-09-30 13F/A CYTOKINETICS COM NEW Call 19,600 -0.51 577 -10.12 n/a n/a n/a
2023-11-14 2023-09-30 13F CYTOKINETICS COM NEW Call 19,600 577 n/a n/a n/a
2023-08-14 2023-06-30 13F CYTOKINETICS COM NEW Call 19,700 643 n/a n/a n/a
2023-05-15 2023-03-31 13F CYTOKINETICS COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F CYTOKINETICS COM NEW Call 1,600 166.67 73 151.72 n/a n/a n/a
2022-11-14 2022-09-30 13F CYTOKINETICS COM NEW Call 600 29 n/a n/a n/a
2020-08-14 2020-06-30 13F CYTOKINETICS COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F CYTOKINETICS COM NEW Call 2,200 29.41 26 44.44 n/a n/a n/a
2020-02-14 2019-12-31 13F CYTOKINETICS COM NEW Call 1,700 18 n/a n/a n/a
2019-11-14 2019-09-30 13F CYTOKINETICS COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F CYTOKINETICS COM NEW Call 9,800 110 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A CYTOKINETICS COM NEW Put 10,200 -42.05 672 -39.89 n/a n/a n/a
2026-05-08 2026-03-31 13F CYTOKINETICS COM NEW Put 10,200 672 n/a n/a n/a
2026-02-13 2025-12-31 13F CYTOKINETICS COM NEW Put 17,600 -61.15 1,118 -55.08 n/a n/a n/a
2025-11-14 2025-09-30 13F CYTOKINETICS COM NEW Put 45,300 -62.09 2,490 -36.96 n/a n/a n/a
2025-08-13 2025-06-30 13F CYTOKINETICS COM NEW Put 119,500 16,971.43 3,948 14,000.00 n/a n/a n/a
2025-05-14 2025-03-31 13F CYTOKINETICS COM NEW Put 700 28 n/a n/a n/a
2024-11-14 2024-09-30 13F CYTOKINETICS COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F CYTOKINETICS COM NEW Put 2,400 -90.24 130 -92.46 n/a n/a n/a
2024-05-15 2024-03-31 13F CYTOKINETICS COM NEW Put 24,600 34.43 1,725 12.90 n/a n/a n/a
2024-02-14 2023-12-31 13F CYTOKINETICS COM NEW Put 18,300 103.33 1,528 476.23 n/a n/a n/a
2023-11-21 2023-09-30 13F/A CYTOKINETICS COM NEW Put 9,000 -73.76 265 -76.30 n/a n/a n/a
2023-11-14 2023-09-30 13F CYTOKINETICS COM NEW Put 9,000 265 n/a n/a n/a
2023-08-14 2023-06-30 13F CYTOKINETICS COM NEW Put 34,300 1,119 n/a n/a n/a
2023-05-15 2023-03-31 13F CYTOKINETICS COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F CYTOKINETICS COM NEW Put 4,700 422.22 215 388.64 n/a n/a n/a
2022-11-14 2022-09-30 13F CYTOKINETICS COM NEW Put 900 44 n/a n/a n/a
2020-08-14 2020-06-30 13F CYTOKINETICS COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F CYTOKINETICS COM NEW Put 1,000 12 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.