Tudor Investment Corp
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Tudor Investment Corp’s Cytek Biosciences CTKB Stock Holding History

Tudor Investment Corp’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 		$1.4M Buy
+320,715
New +$1.51M ﹤0.01% 2125
2025
Q4 		– Sell
-249,812
Closed -$867K – 3576
2025
Q3 		$867K Buy
+249,812
New +$938K ﹤0.01% 2374
2023
Q2 		– Sell
-123,997
Closed -$1.14M – 2515
2023
Q1 		$1.14M Buy
+123,997
New +$1.33M 0.02% 1118

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

Tudor Investment Corp's CTKB Position: Q1 2026 in Review

Tudor Investment Corp opened a new position in Cytek Biosciences (CTKB) in Q1 2026: 320,715 shares worth $1.4M. The stake represents ﹤0.01% of the portfolio and ranks #2125 among its holdings. This is a return to the name: Tudor Investment Corp previously reported a position in CTKB as recently as Q3 2025.

Tudor Investment Corp first reported a position in CTKB in Q1 2023 and has held it in 3 quarters since. 165 funds tracked by Wall St. Rank hold CTKB as of Q1 2026.

  • Tudor Investment Corp held 320,715 shares of Cytek Biosciences worth $1.4M as of Q1 2026.
  • Cytek Biosciences was a new Tudor Investment Corp position in Q1 2026.
  • Cytek Biosciences made up ﹤0.01% of Tudor Investment Corp's portfolio in Q1 2026, its #2125 holding.
  • Tudor Investment Corp first reported a position in Cytek Biosciences in Q1 2023 and has held it in 3 quarters since.
  • 165 funds tracked by Wall St. Rank held Cytek Biosciences as of Q1 2026.

Based on Tudor Investment Corp's 13F filing for Q1 2026, filed 15 May 2026.