Simplex Trading
CYTK icon

Simplex Trading’s Cytokinetics CYTK Stock Holding History

Simplex Trading’s Portfolio CYTK Stock Details CYTK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.67M Sell
25,300
-18,400
-42% -$1.17M ﹤0.01% 1995
2025
Q4 		$2.78M Sell
43,700
-75,600
-63% -$4.7M ﹤0.01% 1715
2025
Q3 		$6.56M Buy
119,300
+92,500
+345% +$3.81M ﹤0.01% 1238
2025
Q2 		$885K Sell
26,800
-14,500
-35% -$504K ﹤0.01% 2901
2025
Q1 		$1.66M Sell
41,300
-103,600
-71% -$4.76M ﹤0.01% 2218
2024
Q4 		$6.82M Sell
144,900
-22,400
-13% -$1.16M ﹤0.01% 1258
2024
Q3 		$8.83M Buy
167,300
+62,800
+60% +$3.5M 0.01% 1117
2024
Q2 		$5.66M Sell
104,500
-522,500
-83% -$31.5M ﹤0.01% 1364
2024
Q1 		$44M Buy
627,000
+167,000
+36% +$12.9M 0.03% 373
2023
Q4 		$38.4M Buy
460,000
+409,900
+818% +$14.8M 0.02% 431
2023
Q3 		$1.48M Buy
50,100
+19,900
+66% +$663K ﹤0.01% 2331
2023
Q2 		$985K Buy
30,200
+29,700
+5,940% +$1.1M ﹤0.01% 2614
2023
Q1 		$17K Sell
500
-2,700
-84% -$110K ﹤0.01% 7052
2022
Q4 		$146K Buy
3,200
+1,000
+45% +$43K ﹤0.01% 4619
2022
Q3 		$106K Sell
2,200
-800
-27% -$38.5K ﹤0.01% 5437
2022
Q2 		$117K Sell
3,000
-1,700
-36% -$68.4K ﹤0.01% 5355
2022
Q1 		$173K Buy
4,700
+2,900
+161% +$103K ﹤0.01% 5358
2021
Q4 		$82K Buy
1,800
+1,200
+200% +$46.3K ﹤0.01% 6541
2021
Q3 		$12K Hold
600
– – ﹤0.01% 8807
2021
Q2 		$11K Buy
+600
New +$14.1K ﹤0.01% 9027
2021
Q1 		– Sell
-52
Closed -$108K – 9015
2020
Q4 		$108K Sell
52
-473
-90% -$8.64K ﹤0.01% 5374
2020
Q3 		$1.14M Buy
525
+128
+32% +$2.99K ﹤0.01% 2095
2020
Q2 		$935K Sell
397
-218
-35% -$4.09K ﹤0.01% 2208
2020
Q1 		$725K Buy
615
+442
+255% +$5.64K ﹤0.01% 2206
2019
Q4 		$183K Buy
173
+132
+322% +$1.36K ﹤0.01% 3870
2019
Q3 		$46K Buy
41
+40
+4,000% +$502 ﹤0.01% 5088
2019
Q2 		$1K Sell
1
-11
-92% -$106 ﹤0.01% 6858
2019
Q1 		$9K Buy
12
+7
+140% +$51 ﹤0.01% 6201
2018
Q4 		$3K Sell
5
-10
-67% -$73 ﹤0.01% 6408
2018
Q3 		$14K Sell
15
-15
-50% -$120 ﹤0.01% 6220
2018
Q2 		$24K Buy
30
+17
+131% +$141 ﹤0.01% 5714
2018
Q1 		$5K Sell
13
-56
-81% -$480 ﹤0.01% 4619
2017
Q4 		$10K Sell
69
-314
-82% -$3.56K ﹤0.01% 3882
2017
Q3 		$44K Buy
383
+258
+206% +$3.52K ﹤0.01% 2410
2017
Q2 		$30K Buy
125
+4
+3% +$56 ﹤0.01% 2881
2017
Q1 		$24K Buy
+121
New +$1.41K ﹤0.01% 3059
2016
Q4 		– Sell
-125
Closed -$23K – 5928
2016
Q3 		$23K Buy
+125
New +$1.3K ﹤0.01% 2836
2016
Q2 		– Sell
-65
Closed -$2K – 5895
2016
Q1 		$2K Buy
65
+55
+550% +$402 ﹤0.01% 4686
2015
Q4 		$1K Sell
10
-13
-57% -$128 ﹤0.01% 4813
2015
Q3 		$2K Buy
23
+4
+21% +$27 ﹤0.01% 4607
2015
Q2 		$1K Buy
+19
New +$125 ﹤0.01% 4605

Other funds holding CYTK

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Simplex Trading's CYTK Position: Q4 2025 in Review

Simplex Trading sold out of Cytokinetics (CYTK) in Q4 2025, closing a stake of 41,004 shares — an estimated $2.55M sold.

Simplex Trading first reported a position in CYTK in Q1 2015 and held it in 28 quarters. The position peaked at $12.5M in Q1 2024. 430 funds tracked by Wall St. Rank hold CYTK as of Q4 2025.

  • Simplex Trading reported no remaining Cytokinetics position as of Q4 2025 after selling out during the quarter.
  • Simplex Trading sold 41,004 Cytokinetics shares in Q4 2025, an estimated $2.55M.
  • Simplex Trading first reported a position in Cytokinetics in Q1 2015 and held it in 28 quarters.
  • Simplex Trading's Cytokinetics position peaked at $12.5M in Q1 2024.
  • 430 funds tracked by Wall St. Rank held Cytokinetics as of Q4 2025.

Based on Simplex Trading's 13F filing for Q4 2025, filed 11 Feb 2026.