CYTK Institutional Ownership & Shareholders
CYTOKINETICS INC (CYTK) is currently held by 473 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $13.48B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CYTK tracked by InsiderSet, reporting ownership valued at approximately $1.71B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.25B, representing an estimated loss of -27.19% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed CYTK value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., T. Rowe Price Investment Management, Inc., Wellington Management Group Llp, and several other long-term asset managers with concentrated positions in CYTOKINETICS INC (CYTK).
This page ranks the largest institutional CYTK shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
473
Total Reported Value
$13.48B
Largest Holder
Blackrock, Inc.
Largest Position
$1.71B
Insider Transactions (90d)
24
Latest Filing Quarter
Q2 2026
New Institutional Positions
63
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.03% | 20,094,362 | $1,711,838,738 | $1,246,453,275 | -$465,385,463 | -27.19% | |
| T. Rowe Price Investment Management, Inc. | 1.05% | 18,718,498 | $1,594,629,000 | $1,161,108,431 | -$433,520,569 | -27.19% | |
| Wellington Management Group Llp | 0.10% | 6,931,770 | $590,517,486 | $429,977,693 | -$160,539,793 | -27.19% | |
| Vanguard Portfolio Management Llc | 0.03% | 6,711,799 | $571,778,157 | $416,332,892 | -$155,445,265 | -27.19% | |
| State Street Corp | 0.02% | 6,494,233 | $553,243,709 | $402,837,273 | -$150,406,436 | -27.19% | |
| Vanguard Capital Management Llc | 0.01% | 6,117,515 | $521,151,103 | $379,469,455 | -$141,681,648 | -27.19% | |
| Fmr Llc | 0.02% | 5,031,782 | $428,657,534 | $312,121,437 | -$116,536,097 | -27.19% | |
| Avoro Capital Advisors Llc | 3.82% | 4,999,999 | $425,949,915 | $310,149,938 | -$115,799,977 | -27.19% | |
| Bank Of America Corp | 0.03% | 4,635,709 | $394,916,049 | $287,553,029 | -$107,363,020 | -27.19% | |
| Geode Capital Management, Llc | 0.02% | 3,712,501 | $316,325,896 | $230,286,437 | -$86,039,459 | -27.20% | |
| Rtw Investments, Lp | 2.08% | 2,862,003 | $243,814,036 | $177,530,046 | -$66,283,990 | -27.19% | |
| Polar Capital Holdings Plc | 0.54% | 2,253,649 | $191,988,358 | $139,793,847 | -$52,194,511 | -27.19% | |
| Price T Rowe Associates Inc | 0.02% | 1,958,946 | $166,884,000 | $121,513,420 | -$45,370,580 | -27.19% | |
| Goldman Sachs Group Inc | 0.02% | 1,761,588 | $150,069,725 | $109,271,304 | -$40,798,421 | -27.19% | |
| Capital Research Global Investors | 0.02% | 1,686,625 | $143,683,584 | $104,621,349 | -$39,062,235 | -27.19% | |
| Northern Trust Corp | 0.02% | 1,647,345 | $140,337,319 | $102,184,810 | -$38,152,509 | -27.19% | |
| Jpmorgan Chase & Co | 0.01% | 1,588,895 | $139,150,046 | $98,559,157 | -$40,590,889 | -29.17% | |
| William Blair Investment Management, Llc | 0.41% | 1,603,442 | $136,597,224 | $99,461,507 | -$37,135,717 | -27.19% | |
| Integral Health Asset Management, Llc | 5.59% | 1,600,000 | $136,304,000 | $99,248,000 | -$37,056,000 | -27.19% | |
| Point72 Asset Management, L.P. | 0.21% | 1,587,712 | $135,257,185 | $98,485,775 | -$36,771,410 | -27.19% | |
| Charles Schwab Investment Management Inc | 0.02% | 1,565,781 | $133,388,883 | $97,125,395 | -$36,263,488 | -27.19% | |
| Susquehanna International Group, Llp | 0.12% | 1,549,458 | $131,998,327 | $96,112,880 | -$35,885,447 | -27.19% | |
| Morgan Stanley | 0.01% | 1,510,318 | $128,664,004 | $93,685,026 | -$34,978,978 | -27.19% | |
| Principal Financial Group Inc | 0.05% | 1,311,664 | $111,740,656 | $81,362,518 | -$30,378,138 | -27.19% | |
| Capital International Investors | 0.02% | 1,305,848 | $111,245,191 | $81,001,751 | -$30,243,440 | -27.19% | |
| Invesco Ltd. | 0.01% | 1,235,323 | $105,237,167 | $76,627,086 | -$28,610,081 | -27.19% | |
| Armistice Capital, Llc | 2.83% | 1,201,342 | $102,342,325 | $74,519,244 | -$27,823,081 | -27.19% | |
| Ubs Group Ag | 0.02% | 1,171,287 | $99,781,940 | $72,654,933 | -$27,127,007 | -27.19% | |
| Pictet Asset Management Holding Sa | 0.09% | 1,160,463 | $99,038,455 | $71,983,520 | -$27,054,935 | -27.32% | |
| Frazier Life Sciences Management, L.P. | 2.15% | 1,159,879 | $98,810,092 | $71,947,294 | -$26,862,798 | -27.19% | |
| Bank Of New York Mellon Corp | 0.02% | 1,150,697 | $98,027,901 | $71,377,735 | -$26,650,166 | -27.19% | |
| Holocene Advisors, Lp | 0.22% | 1,144,579 | $97,506,685 | $70,998,235 | -$26,508,450 | -27.19% | |
| Woodline Partners Lp | 0.29% | 1,100,708 | $93,769,315 | $68,276,917 | -$25,492,398 | -27.19% | |
| D. E. Shaw & Co., Inc. | 0.06% | 1,048,103 | $89,287,894 | $65,013,829 | -$24,274,065 | -27.19% | |
| Norges Bank | 0.01% | 1,015,522 | $86,512,319 | $62,992,830 | -$23,519,489 | -27.19% | |
| Royalty Pharma Sub-Manager, Llc | 34.52% | 980,392 | $83,519,594 | $60,813,716 | -$22,705,878 | -27.19% | |
| Nomura Asset Management International Inc. | 0.12% | 961,815 | $81,937,000 | $59,661,384 | -$22,275,616 | -27.19% | |
| Gw&K Investment Management, Llc | 0.61% | 916,107 | $78,044,000 | $56,826,117 | -$21,217,883 | -27.19% | |
| Vanguard Fiduciary Trust Co | 0.02% | 906,423 | $77,218,175 | $56,225,419 | -$20,992,756 | -27.19% | |
| Bnp Paribas Asset Management Holding S.A. | 0.07% | 827,810 | $70,521,134 | $51,349,054 | -$19,172,080 | -27.19% | |
| Melqart Asset Management (Uk) Ltd | 6.22% | 767,525 | $65,385,455 | $47,609,576 | -$17,775,879 | -27.19% | |
| Siren, L.L.C. | 1.31% | 758,952 | $64,655,121 | $47,077,793 | -$17,577,328 | -27.19% | |
| Fisher Asset Management, Llc | 0.02% | 743,697 | $63,355,547 | $46,131,525 | -$17,224,022 | -27.19% | |
| Foresite Capital Management Iv, Llc | 20.98% | 714,695 | $60,884,867 | $44,332,531 | -$16,552,336 | -27.19% | |
| Balyasny Asset Management L.P. | 0.11% | 711,676 | $60,627,678 | $44,145,262 | -$16,482,416 | -27.19% | |
| Deep Track Capital, Lp | 0.88% | 700,000 | $59,633,000 | $43,421,000 | -$16,212,000 | -27.19% | |
| Bnp Paribas Financial Markets | 0.03% | 689,077 | $58,702,470 | $42,743,446 | -$15,959,024 | -27.19% | |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 3.08% | 660,310 | $56,251,809 | $40,959,029 | -$15,292,780 | -27.19% | |
| Citadel Advisors Llc | 0.03% | 640,945 | $54,602,105 | $39,757,818 | -$14,844,287 | -27.19% | |
| Qube Research & Technologies Ltd | 0.05% | 572,535 | $48,774,257 | $35,514,346 | -$13,259,911 | -27.19% |
Frequently asked questions about CYTK
Who are the largest institutional holders of CYTK?
The largest institutional holders of CYTK reported in the latest SEC Form 13F filings include Blackrock, Inc., T. Rowe Price Investment Management, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported CYTK position.
What is CYTK institutional ownership?
This page tracks CYTK positions reported by institutional investment managers through SEC Form 13F. CYTOKINETICS INC (CYTK) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CYTK?
InsiderSet currently tracks 473 institutional managers reporting CYTK holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CYTK shareholders.
How much CYTK stock do institutions own?
Institutional investment managers disclosed approximately $13.48B in CYTK holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CYTK institutional ownership last updated?
The latest CYTK institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CYTK holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CYTK position after the reporting date.
Are institutions buying or selling CYTK?
Institutional buying and selling can be analyzed by comparing CYTK positions across consecutive 13F reporting periods. InsiderSet's CYTK Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CYTK ownership changes.
How has CYTK institutional ownership changed over time?
InsiderSet tracks CYTK institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.