Wellington Management Group
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Wellington Management Group’s Cytek Biosciences CTKB Stock Holding History

Wellington Management 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
2026
Q1 		– Sell
-764,279
Closed -$3.86M – 1901
2025
Q4 		$3.86M Sell
764,279
-1,776,767
-70% -$8.25M ﹤0.01% 1460
2025
Q3 		$8.82M Buy
+2,541,046
New +$9.54M ﹤0.01% 1295
2025
Q1 		– Sell
-1,517,214
Closed -$9.85M – 1963
2024
Q4 		$9.85M Sell
1,517,214
-489,925
-24% -$2.92M ﹤0.01% 1198
2024
Q3 		$11.1M Sell
2,007,139
-128,568
-6% -$729K ﹤0.01% 1141
2024
Q2 		$11.9M Buy
2,135,707
+780,737
+58% +$4.69M ﹤0.01% 1116
2024
Q1 		$9.09M Buy
1,354,970
+63,712
+5% +$504K ﹤0.01% 1166
2023
Q4 		$11.8M Sell
1,291,258
-154,280
-11% -$971K ﹤0.01% 1066
2023
Q3 		$7.98M Buy
1,445,538
+99,170
+7% +$795K ﹤0.01% 1160
2023
Q2 		$11.5M Buy
1,346,368
+111,162
+9% +$997K ﹤0.01% 1072
2023
Q1 		$11.4M Buy
+1,235,206
New +$13.3M ﹤0.01% 1068
2022
Q4 		– Sell
-31,981
Closed -$471K – 2015
2022
Q3 		$471K Buy
+31,981
New +$415K ﹤0.01% 1814
2022
Q2 		– Sell
-41,617
Closed -$449K – 2094
2022
Q1 		$449K Buy
+41,617
New +$562K ﹤0.01% 1943

Other funds holding CTKB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
Topline Capital Management Santa Monica, California $386M AUM 2.37% 1-Year Est. Return
HA
HHLR Advisors Grand Cayman, Cayman Islands $832M AUM 32.38% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Wellington Management Group's CTKB Position: Q1 2026 in Review

Wellington Management Group sold out of Cytek Biosciences (CTKB) in Q1 2026, closing a stake of 764,279 shares — an estimated $3.86M sold.

Wellington Management Group first reported a position in CTKB in Q1 2022 and held it in 12 quarters. The position peaked at $11.9M in Q2 2024. 165 funds tracked by Wall St. Rank hold CTKB as of Q1 2026.

  • Wellington Management Group reported no remaining Cytek Biosciences position as of Q1 2026 after selling out during the quarter.
  • Wellington Management Group sold 764,279 Cytek Biosciences shares in Q1 2026, an estimated $3.86M.
  • Wellington Management Group first reported a position in Cytek Biosciences in Q1 2022 and held it in 12 quarters.
  • Wellington Management Group's Cytek Biosciences position peaked at $11.9M in Q2 2024.
  • 165 funds tracked by Wall St. Rank held Cytek Biosciences as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.