CYTEK BIOSCIENCES INC (CTKB) Institutional Ownership Changes & 13F Activity

CYTEK BIOSCIENCES INC (CTKB). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy1,700676,700$2,957,179
Q4 2025Renaissance Technologies LLCSell-120,544675,000$3,408,750
Q3 2025Renaissance Technologies LLCSell-267,595795,544$2,760,538
Q2 2025Renaissance Technologies LLCBuy375,5391,063,139$3,614,673
Q1 2025Renaissance Technologies LLCBuy225,000687,600$2,757,276
Q4 2024Renaissance Technologies LLCBuy251,000462,600$3,002,274
Q3 2024Renaissance Technologies LLCSell-22,300211,600$1,172,264
Q2 2024Renaissance Technologies LLCSell-63,000233,900$1,305,162
Q3 2023Renaissance Technologies LLCSell-56,600296,900$1,639
Q1 2023Renaissance Technologies LLCSell-38,300353,500$3,249
Q4 2022Renaissance Technologies LLCBuy179,900391,800$4,000
Q3 2022Renaissance Technologies LLCBuy49,000211,900$3,119
Q2 2022Renaissance Technologies LLCBuy108,600162,900$1,748
Q1 2022Renaissance Technologies LLCSell-54,70054,300$585
Q4 2021Renaissance Technologies LLCBuy109,000109,000$1,779

Frequently asked questions about CTKB activity

  • Which institutional owners are buying CTKB?

    Institutional owners buying CTKB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CTKB activity?

    "Buy" means an investor increased their reported position in CTKB compared to the prior reporting period. This reflects growing exposure to CYTEK BIOSCIENCES INC (CTKB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CTKB increasing?

    Institutional interest in CTKB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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