XT
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XTX Topco’s Cytek Biosciences CTKB Stock Holding History

XTX Topco’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 		– Sell
-34,565
Closed -$175K – 3916
2025
Q4 		$175K Sell
34,565
-37,981
-52% -$176K ﹤0.01% 2454
2025
Q3 		$252K Sell
72,546
-42,855
-37% -$161K 0.01% 1652
2025
Q2 		$392K Sell
115,401
-54,878
-32% -$183K 0.02% 1268
2025
Q1 		$683K Buy
170,279
+149,373
+714% +$774K 0.03% 796
2024
Q4 		$136K Sell
20,906
-5,244
-20% -$31.2K 0.01% 1697
2024
Q3 		$145K Buy
+26,150
New +$148K 0.01% 1537
2024
Q2 		– Sell
-19,844
Closed -$133K – 1974
2024
Q1 		$133K Buy
+19,844
New +$157K 0.02% 1290

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

XTX Topco's CTKB Position: Q1 2026 in Review

XTX Topco sold out of Cytek Biosciences (CTKB) in Q1 2026, closing a stake of 34,565 shares — an estimated $175K sold.

XTX Topco first reported a position in CTKB in Q1 2024 and held it in 7 quarters. The position peaked at $683K in Q1 2025. 165 funds tracked by Wall St. Rank hold CTKB as of Q1 2026.

  • XTX Topco reported no remaining Cytek Biosciences position as of Q1 2026 after selling out during the quarter.
  • XTX Topco sold 34,565 Cytek Biosciences shares in Q1 2026, an estimated $175K.
  • XTX Topco first reported a position in Cytek Biosciences in Q1 2024 and held it in 7 quarters.
  • XTX Topco's Cytek Biosciences position peaked at $683K in Q1 2025.
  • 165 funds tracked by Wall St. Rank held Cytek Biosciences as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.