Who Owns Cytek Biosciences Inc (CTKB)? -- Institutional Holders (2026-06-30)
189 institutions reported holding $365.8M of Cytek Biosciences Inc (CTKB) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($42.4M), MILLENNIUM MANAGEMENT LLC ($41.4M), Boston Partners ($33.9M), VANGUARD GROUP INC ($30.4M), HHLR ADVISORS, LTD. ($29.5M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | BlackRock, Inc. | $42.4M | 9.6M | Trimmed |
| 2 | MILLENNIUM MANAGEMENT LLC | $41.4M | 9.3M | Added |
| 3 | Boston Partners | $33.9M | 7.7M | Added |
| 4 | VANGUARD GROUP INC | $30.4M | 6.9M | Trimmed |
| 5 | HHLR ADVISORS, LTD. | $29.5M | 6.7M | Hold |
| 6 | Topline Capital Management, LLC | $27.8M | 6.3M | Trimmed |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $13.6M | 3.1M | Added |
| 8 | DIMENSIONAL FUND ADVISORS LP | $11.6M | 2.6M | Trimmed |
| 9 | STATE STREET CORP | $11.4M | 2.6M | Trimmed |
| 10 | GOLDMAN SACHS GROUP INC | $9.6M | 2.2M | Trimmed |
| 11 | ROYCE & ASSOCIATES LP | $9.2M | 2.1M | Added |
| 12 | Russell Investments Group, Ltd. | $6.7M | 1.5M | Added |
| 13 | ACADIAN ASSET MANAGEMENT LLC | $6.1M | 1.4M | Added |
| 14 | BANK OF AMERICA CORP /DE/ | $5.8M | 1.3M | Added |
| 15 | Sixth Street Partners Management Company, L.P. | $4.8M | 1.1M | New |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $4.8M | 1.1M | Trimmed |
| 17 | NORTHERN TRUST CORP | $4.4M | 1.0M | Trimmed |
| 18 | HRT FINANCIAL LP | $4.4M | 997,769 | Added |
| 19 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $4.3M | 973,833 | Added |
| 20 | JANE STREET GROUP, LLC | $4.0M | 906,162 | New |
| 21 | TUDOR INVESTMENT CORP ET AL | $3.7M | 837,913 | Added |
| 22 | AQR CAPITAL MANAGEMENT LLC | $3.6M | 813,971 | Trimmed |
| 23 | CITADEL ADVISORS LLC | $3.2M | 721,470 | Added |
| 24 | MORGAN STANLEY | $3.1M | 701,792 | Trimmed |
| 25 | Qube Research & Technologies Ltd | $3.1M | 689,821 | New |
Source: SEC Form 13F filings · as of 2026-06-30