Cytek BiosciencesCTKB
13F holders, Q1 2026 (March 31)165holders +10
20new positions
11sold out
6famous investors
$4.37avg. 13F price*
At the end of Q1 2026, 165 institutions reported holding Cytek Biosciences Inc. (CTKB) in their 13F filings, up 10 from Q4 2025. 20 opened new positions and 11 sold out. The largest holders were BlackRock, Inc. ($74.3M), Topline Capital Management, LLC ($30.9M) and HHLR Advisors, LTD. ($29.1M). 6 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Cytek Biosciences Inc.
- CUSIP
- 23285D109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 20 | $6.4M |
| Exits | 11 | $5.5M |
All 13F filers, Q4 2025 → Q1 2026: 6,509,458 shares bought and 3,810,387 shares sold, net +2,699,071 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 165 holders
| BlackRock, Inc. | 0.00% | Reduce -1.0% | 17,007,269 | $74.3M |
| Topline Capital Management, LLC | 5.10% | Reduce -5.1% | 7,064,481 | $30.9M |
| HHLR Advisors, LTD. | 1.74% | No change | 6,657,030 | $29.1M |
| Millennium Management | 0.02% | Add +32.4% | 6,291,798 | $27.5M |
| Boston Partners | 0.03% | Add +15.9% | 5,802,773 | $25.4M |
| Vanguard Capital Management LLC | 0.00% | — | 4,762,904 | $20.8M |
| State Street Corp. | 0.00% | Reduce -0.6% | 4,123,748 | $18.0M |
| Geode Capital Management, LLC | 0.00% | Add +1.6% | 2,833,955 | $12.4M |
| Dimensional Fund Advisors LP | 0.00% | Add +0.6% | 2,663,329 | $11.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +31.0% | 2,344,735 | $10.2M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,311,858 | $10.1M |
| Morgan Stanley | 0.00% | Add +1.1% | 1,718,875 | $7.5M |
| Royce & Associates LP | 0.07% | Reduce -3.0% | 1,642,368 | $7.2M |
| Brown Capital Management LLC | 0.92% | Reduce -28.6% | 1,480,506 | $6.5M |
| Russell Investments Group, Ltd. | 0.01% | Add +35.8% | 1,359,900 | $5.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.9% | 1,104,601 | $4.8M |
| Bank of America Corp. | 0.00% | Add +17.9% | 1,009,054 | $4.4M |
| Northern Trust Corp. | 0.00% | Add +5.0% | 1,005,193 | $4.4M |
| AQR Capital Management | 0.00% | Add +22.7% | 912,342 | $4.0M |
| Simcoe Capital LLC | 3.54% | Add +195.6% | 882,113 | $3.9M |
| CenterBook Partners LP | 0.17% | New | 729,874 | $3.2M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 717,011 | $3.1M |
| Renaissance Technologies | 0.00% | Add +0.3% | 676,700 | $3.0M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.6% | 608,647 | $2.7M |
| Principal Financial Group Inc. | 0.00% | Reduce -19.8% | 534,759 | $2.3M |
| Citadel Advisors | 0.00% | Add +182.7% | 471,392 | $2.1M |
| HRT Financial LP | 0.00% | Reduce -5.4% | 414,052 | $1.8M |
| Acadian Asset Management LLC | 0.00% | Reduce -40.8% | 398,988 | $1.7M |
| Public Sector Pension Investment Board | 0.01% | Add +4.1% | 394,718 | $1.7M |
| Invesco Ltd. | 0.00% | Reduce -2.6% | 388,233 | $1.7M |
| Tudor Investment Corporation | 0.01% | New | 320,715 | $1.4M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -11.6% | 319,909 | $1.4M |
| JPMorgan Chase & Co. | 0.00% | Reduce -9.1% | 299,090 | $1.3M |
| FMR LLC | 0.00% | Add +21.1% | 283,386 | $1.2M |
| American Century Companies Inc. | 0.00% | Reduce -1.0% | 281,681 | $1.2M |
| D. E. Shaw & Co. | 0.00% | Reduce -1.1% | 260,125 | $1.1M |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -2.6% | 257,292 | $1.1M |
| Rhumbline Advisers | 0.00% | Add +1.9% | 254,589 | $1.1M |
| Nuveen, LLC | 0.00% | Reduce -3.3% | 245,521 | $1.1M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -18.3% | 241,504 | $1.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -7.4% | 187,270 | $818K |
| UBS Group AG | 0.00% | Reduce -59.4% | 186,881 | $817K |
| Legal & General Group Plc | 0.00% | Reduce -3.0% | 182,860 | $799K |
| Alliancebernstein L.P. | 0.00% | No change | 141,048 | $712K |
| Ieq Capital, LLC | 0.00% | Add +16.4% | 144,392 | $631K |
| Voya Investment Management LLC | 0.00% | Add +44.5% | 141,385 | $618K |
| Prudential Financial Inc. | 0.00% | Add +10.1% | 117,597 | $514K |
| Franklin Resources Inc. | 0.00% | Add +1000.4% | 113,973 | $498K |
| Numerai GP LLC | 0.05% | Reduce -39.8% | 112,460 | $491K |
| Gsa Capital Partners LLP | 0.03% | New | 109,116 | $477K |
| Deutsche Bank AG | 0.00% | Add +12.1% | 104,437 | $456K |
| State of Wisconsin Investment Board | 0.00% | Reduce -38.3% | 104,046 | $455K |
| Creative Planning | 0.00% | Reduce -25.8% | 89,937 | $393K |
| PDT Partners, LLC | 0.02% | Reduce -5.4% | 86,869 | $380K |
| T. Rowe Price Associates Inc. | 0.00% | Add +14.8% | 80,142 | $351K |
| BNP Paribas Financial Markets | 0.00% | Reduce -26.6% | 78,044 | $341K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -2.9% | 73,399 | $321K |
| MetLife Investment Management, LLC | 0.00% | Add +11.7% | 64,517 | $282K |
| State of Alaska, Department of Revenue | 0.00% | No change | 61,269 | $267K |
| Illinois Municipal Retirement Fund | 0.00% | New | 60,877 | $266K |
| Cwm, LLC | 0.00% | Add +15.4% | 60,724 | $265K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +103.5% | 72,700 | $260K |
| Cerity Partners LLC | 0.00% | Add +17.4% | 58,123 | $254K |
| Susquehanna International Group, LLP | 0.00% | Add +16.4% | 56,010 | $245K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +1.0% | 55,145 | $241K |
| Panagora Asset Management Inc. | 0.00% | No change | 51,593 | $225K |
| Quantinno Capital Management LP | 0.00% | Add +72.7% | 51,212 | $224K |
| Louisiana State Employees Retirement System | 0.00% | Reduce -3.2% | 48,800 | $213K |
| Wells Fargo & Company | 0.00% | Reduce -65.9% | 45,277 | $198K |
| Vanguard Global Advisers, LLC | 0.00% | — | 45,212 | $198K |
| New York State Teachers Retirement System | 0.00% | Reduce -7.5% | 44,829 | $196K |
| Algert Global LLC | 0.00% | New | 42,560 | $186K |
| Canada Pension Plan Investment Board | 0.00% | New | 41,300 | $180K |
| nVerses Capital, LLC | 0.15% | New | 38,319 | $167K |
| New York State Common Retirement Fund | 0.00% | No change | 34,922 | $153K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 34,670 | $152K |
| SG Americas Securities, LLC | 0.00% | Reduce -46.2% | 34,606 | $151K |
| Focus Partners Wealth | 0.00% | Add +0.5% | 33,677 | $147K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -9.6% | 32,199 | $141K |
| Amalgamated Bank | 0.00% | Reduce -1.6% | 31,901 | $139K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 29,469 | $129K |
| Mercer Global Advisors Inc. | 0.00% | Add +34.0% | 29,115 | $127K |
| Jump Financial, LLC | 0.00% | New | 28,892 | $126K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Reduce -0.1% | 27,193 | $119K |
| Yousif Capital Management, LLC | 0.00% | Add +1.8% | 27,078 | $118K |
| Virtu Financial LLC | 0.00% | New | 27,026 | $118K |
| STRS Ohio | 0.00% | No change | 26,200 | $114K |
| Intech Investment Management LLC | 0.00% | Reduce -50.5% | 25,629 | $112K |
| Two Sigma Investments, LP | 0.00% | Reduce -14.8% | 25,600 | $112K |
| Squarepoint Ops LLC | 0.00% | New | 25,296 | $111K |
| Oregon Public Employees Retirement Fund | 0.00% | No change | 25,175 | $110K |
| Fifth Third Bancorp | 0.00% | Add +2631.3% | 24,909 | $109K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 24,338 | $107K |
| Barclays PLC | 0.00% | Reduce -86.8% | 24,143 | $106K |
| State of Tennessee, Department of Treasury | 0.00% | No change | 22,900 | $100K |
| Caitong International Asset Management Co., Ltd | 0.02% | Add +304.2% | 20,794 | $91K |
| Bailard, Inc. | 0.00% | Reduce -32.1% | 19,900 | $87K |
| Axq Capital, LP | 0.01% | Add +3.0% | 19,708 | $86K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +55.7% | 19,066 | $83K |
| ProShare Advisors LLC | 0.00% | Reduce -19.9% | 18,216 | $80K |
"% of holder's portfolio" is CTKB's weight in each manager's 13F, not the share of Cytek Biosciences Inc. the manager owns.