Cytek Biosciences Inc (CTKB)
Healthcare
Medical Devices
—
4.20 $
-2.1%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Cytek Biosciences Inc (CTKB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 74.8% of the shares are freely tradable; institutional investors hold 67.6%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
67.6%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
8.4%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
74.8%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
6.9%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
129Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 13.17 | 17,007,269 | -1.0 | 03/31/2026 |
| Vanguard Group Inc | 5.79 | 7,475,477 | +7.8 | 12/31/2025 |
| Topline Capital Management LLC | 5.47 | 7,064,481 | -5.1 | 03/31/2026 |
| Hillhouse Capital Advisors, Ltd. | 5.15 | 6,657,030 | +0.0 | 12/31/2025 |
| Millennium Management LLC | 4.87 | 6,291,798 | +32.4 | 03/31/2026 |
| Boston Partners Global Investors, Inc | 4.49 | 5,802,773 | +15.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.69 | 4,762,904 | +0.0 | 03/31/2026 |
| State Street Corp | 3.19 | 4,123,748 | -0.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.21 | 6,726,314 | +0.0 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 2.64 | 3,411,248 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.