Simplex Trading
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Simplex Trading’s Cytek Biosciences CTKB Stock Holding History

Simplex Trading’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
2026
Q1 		$14.1K Buy
3,226
+1,223
+61% +$5.77K ﹤0.01% 7046
2025
Q4 		$10.1K Buy
2,003
+1,318
+192% +$6.12K ﹤0.01% 6978
2025
Q3 		$2K Buy
685
+470
+219% +$1.76K ﹤0.01% 8619
2025
Q2 		$0 Buy
215
+84
+64% +$280 ﹤0.01% 8800
2025
Q1 		$0 Buy
+131
New +$679 ﹤0.01% 8674
2024
Q4 		– Sell
-1,440
Closed -$8.58K – 8667
2024
Q3 		$7K Sell
1,440
-50
-3% -$284 ﹤0.01% 7407
2024
Q2 		$8K Buy
1,490
+1,351
+972% +$8.12K ﹤0.01% 7562
2024
Q1 		$0 Buy
139
+128
+1,164% +$1.01K ﹤0.01% 8988
2023
Q4 		$0 Buy
+11
New +$69 ﹤0.01% 8929

Other funds holding CTKB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
TCM
Topline Capital Management Santa Monica, California $605M AUM 26.24% 1-Year Est. Return
HA
HHLR Advisors Grand Cayman, Cayman Islands $1.67B AUM 7.53% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Simplex Trading's CTKB Position: Q1 2026 in Review

Simplex Trading increased its Cytek Biosciences (CTKB) stake by 61% in Q1 2026, buying an estimated $5.77K and bringing the position to 3,226 shares worth $14.1K. The position accounts for ﹤0.01% of the portfolio, ranked #7046.

Simplex Trading first reported a position in CTKB in Q4 2023 and has held it in 9 quarters since. 165 funds tracked by Wall St. Rank hold CTKB as of Q1 2026.

  • Simplex Trading held 3,226 shares of Cytek Biosciences worth $14.1K as of Q1 2026.
  • Simplex Trading bought 1,223 Cytek Biosciences shares in Q1 2026, an estimated $5.77K.
  • Cytek Biosciences made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #7046 holding.
  • Simplex Trading first reported a position in Cytek Biosciences in Q4 2023 and has held it in 9 quarters since.
  • 165 funds tracked by Wall St. Rank held Cytek Biosciences as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.