Janus Henderson Group
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Janus Henderson Group’s Cytek Biosciences CTKB Stock Holding History

Janus Henderson Group’s Portfolio CTKB Stock Details CTKB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-64,873
Closed -$221K – 2417
2025
Q2 		$221K Hold
64,873
– – ﹤0.01% 2288
2025
Q1 		$260K Hold
64,873
– – ﹤0.01% 2262
2024
Q4 		$421K Hold
64,873
– – ﹤0.01% 2116
2024
Q3 		$359K Hold
64,873
– – ﹤0.01% 2181
2024
Q2 		$361K Sell
64,873
-601
-0.9% -$3.61K ﹤0.01% 2123
2024
Q1 		$438K Buy
65,474
+11
+0% +$87 ﹤0.01% 2070
2023
Q4 		$597K Buy
65,463
+32,344
+98% +$204K ﹤0.01% 1905
2023
Q3 		$182K Buy
33,119
+1
+0% +$8 ﹤0.01% 2409
2023
Q2 		$282K Buy
33,118
+120
+0.4% +$1.08K ﹤0.01% 2281
2023
Q1 		$303K Buy
32,998
+16,353
+98% +$176K ﹤0.01% 2280
2022
Q4 		$170K Sell
16,645
-16,647
-50% -$224K ﹤0.01% 2225
2022
Q3 		$490K Buy
33,292
+16,338
+96% +$212K ﹤0.01% 1965
2022
Q2 		$182K Sell
16,954
-118,244
-87% -$1.18M ﹤0.01% 2338
2022
Q1 		$1.46M Buy
+135,198
New +$1.83M ﹤0.01% 1356

Other funds holding CTKB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Focus Partners Wealth
Focus Partners Wealth Boston, Massachusetts $89.9B AUM 20.5% 1-Year Est. Return
TCM
Topline Capital Management Santa Monica, California $605M AUM 26.24% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
HA
HHLR Advisors Grand Cayman, Cayman Islands $1.67B AUM 7.53% 1-Year Est. Return
BCM
Brown Capital Management Baltimore, Maryland $704M AUM 6.25% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Janus Henderson Group's CTKB Position: Q3 2025 in Review

Janus Henderson Group sold out of Cytek Biosciences (CTKB) in Q3 2025, closing a stake of 64,873 shares — an estimated $221K sold.

Janus Henderson Group first reported a position in CTKB in Q1 2022 and held it in 14 quarters. The position peaked at $1.46M in Q1 2022. 153 funds tracked by Wall St. Rank hold CTKB as of Q3 2025.

  • Janus Henderson Group reported no remaining Cytek Biosciences position as of Q3 2025 after selling out during the quarter.
  • Janus Henderson Group sold 64,873 Cytek Biosciences shares in Q3 2025, an estimated $221K.
  • Janus Henderson Group first reported a position in Cytek Biosciences in Q1 2022 and held it in 14 quarters.
  • Janus Henderson Group's Cytek Biosciences position peaked at $1.46M in Q1 2022.
  • 153 funds tracked by Wall St. Rank held Cytek Biosciences as of Q3 2025.

Based on Janus Henderson Group's 13F filing for Q3 2025, filed 14 Nov 2025.