A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Cytek Biosciences, Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 61,600 shares of CTKB stock, worth $338,800. This represents 0.0% of its overall portfolio holdings.

Number of Shares
61,600
Holding current value
$338,800
% of portfolio
0.0%

Shares

3 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025

BUY
$3.1 - $4.17 $190,960 - $256,872
61,600 New
61,600 $213,000
Q2 2022

Aug 15, 2022

SELL
$7.41 - $11.56 $703,950 - $1.1 Million
-95,000 Closed
0 $0
Q1 2022

May 16, 2022

BUY
$9.89 - $17.25 $939,550 - $1.64 Million
95,000 New
95,000 $1.02 Million

Others Institutions Holding CTKB

About Cytek Biosciences, Inc.


  • Ticker CTKB
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Medical Devices
  • Shares Outstandng 134,627,008
  • Market Cap $740M
  • Description
  • Cytek Biosciences, Inc., a cell analysis solutions company, provides cell analysis tools that facilitates scientific advances in biomedical research and clinical applications. It offers aurora and northern lights systems, which are spectrum flow cytometers that delivers cell analysis by utilizing the fluorescence signatures from multiple lasers ...
More about CTKB
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