Cytek Biosciences, Inc. Common Stock (CTKB)
LABORATORY ANALYTICAL INSTRUMENTS
Cytek Biosciences, Inc. Common Stock (CTKB) is listed on Nasdaq, where it has traded since July 23, 2021.
- Listed On
- Nasdaq
- Listed Since
- July 23, 2021
- Employees
- 702
- Market Cap
- $734M
About Cytek Biosciences, Inc. Common Stock
Cytek Biosciences Inc is a cell analysis solutions company advancing the next generation of research and clinical tools with its novel technical approach of leveraging the full spectrum of fluorescence signatures from multiple lasers to distinguish fluorescent tags on single cells. Its patented FSP technology optimizes sensitivity and accuracy through its optical and electronic designs that utilize an inventive method of light detection and distribution to a specifically selected number and type of detectors. Its FSP cell analyzers, the Cytek Aurora, Northern Lights, and Cytek Aurora Evo systems, deliver high-resolution, high-content and high-sensitivity cell analysis and address the inherent limitations of other technologies.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 152 institutions reported holding CTKB, with 81.6 million shares worth $361.3 million in aggregate. The largest reported holder was BlackRock, with 9.6 million shares worth $42.4 million. Of the 5 largest holders listed below, 2 added shares, 2 reduced their positions and 1 held its position unchanged during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| BlackRock | 9,578,643 | $42M | Reduced 43.68% |
| Millennium Management | 9,338,010 | $41M | Added 48.42% |
| Boston Partners | 7,660,943 | $34M | Added 32.02% |
| Vanguard | 6,867,063 | $30M | Reduced 12.38% |
| Hhlr Advisors, Ltd | 6,657,030 | $29M | Unchanged |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is CTKB?
Cytek Biosciences, Inc. Common Stock (CTKB) is listed on Nasdaq, where it has traded since July 23, 2021.
Who are the largest institutional holders of CTKB?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of CTKB were BlackRock, Millennium Management and Boston Partners.
How many institutions own CTKB?
152 institutions reported a position in CTKB for the quarter ended June 30, 2026, worth $361.3 million in total.
Did institutions buy or sell CTKB last quarter?
Of the 5 largest reported holders, 2 added shares, 2 reduced their positions and 1 held its position unchanged during the quarter. Every reported holder and its change is on the SentiSense ownership page for CTKB.
Every reported institutional holder, plus insider and congressional trades in CTKB, on SentiSense.