CTKB Cytek Biosciences, Inc.
Cytek Biosciences, Inc. (CTKB) Institutional Ownership
What the institutions did with CTKB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | 3.1M | 32.5% |
| DIMENSIONAL FUND ADVISORS LP | 2.6M | 27.2% |
| Russell Investments Group, Ltd. | 2.4M | 25.8% |
| Bank of New York Mellon Corp | 370.9K | 3.9% |
| MACKENZIE FINANCIAL CORP | 305.1K | 3.2% |
| CenterBook Partners LP | 173.0K | 1.8% |
| DEUTSCHE BANK AG\ | 97.9K | 1.0% |
| Creative Planning | 62.4K | 0.7% |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 62.3K | 0.7% |
| BARCLAYS PLC | 61.7K | 0.7% |
| STRS OHIO | 44.9K | 0.5% |
| CITIGROUP INC | 38.1K | 0.4% |
| Savant Capital, LLC | 30.9K | 0.3% |
| BAILARD, INC. | 19.9K | 0.2% |
| ProShare Advisors LLC | 15.3K | 0.2% |
| NorthCrest Asset Manangement, LLC | 13.6K | 0.1% |
| Everhart Financial Group, Inc. | 13.0K | 0.1% |
| R Squared Ltd | 13.0K | 0.1% |
| XPONANCE LLC | 11.4K | 0.1% |
| State of Alaska, Department of Revenue | 6.5K | 0.1% |
| Caitong International Asset Management Co., Ltd | 2.8K | 0.0% |
| Sterling Capital Management LLC | 2.4K | 0.0% |
| Private Wealth Management Group, LLC | 1.7K | 0.0% |
| Essential Partners LLC | 1.5K | 0.0% |
| PNC Financial Services Group, Inc. | 1.4K | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Russell Investments Group, Ltd. | Increased | 1.5M | 2.4M | +917.4K |
| MACKENZIE FINANCIAL CORP | New | 0 | 305.1K | +305.1K |
| Y-Intercept (Hong Kong) Ltd | Sold Out | 193.1K | 0 | -193.1K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 2.6M | 2.6M | -48.8K |
| BARCLAYS PLC | Increased | 19.6K | 61.7K | +42.1K |
| Savant Capital, LLC | New | 0 | 30.9K | +30.9K |
| CenterBook Partners LP | Increased | 149.2K | 173.0K | +23.8K |
| R Squared Ltd | Reduced | 35.4K | 13.0K | -22.5K |
| Laurion Capital Management LP | Sold Out | 22.3K | 0 | -22.3K |
| CITIGROUP INC | Reduced | 56.1K | 38.1K | -18.0K |
| DEUTSCHE BANK AG\ | Reduced | 111.9K | 97.9K | -14.1K |
| STRS OHIO | Increased | 32.0K | 44.9K | +12.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3.1M | 3.1M | +7.3K |
| SBI Securities Co., Ltd. | Sold Out | 3.0K | 0 | -3.0K |
| SJS Investment Consulting Inc. | New | 0 | 1.1K | +1.1K |
| ProShare Advisors LLC | Reduced | 15.9K | 15.3K | -656 |
| PNC Financial Services Group, Inc. | Reduced | 2.0K | 1.4K | -595 |
| Caitong International Asset Management Co., Ltd | Reduced | 3.3K | 2.8K | -556 |
| Bank of New York Mellon Corp | Reduced | 371.4K | 370.9K | -535 |
| FIFTH THIRD BANCORP | Reduced | 1.5K | 930 | -522 |
| US BANCORP \DE\ | Increased | 536 | 1.1K | +521 |
| IFP Advisors, Inc | Reduced | 597 | 121 | -476 |
| Larson Financial Group LLC | Reduced | 435 | 14 | -421 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Increased | 61.9K | 62.3K | +402 |
| NorthCrest Asset Manangement, LLC | Reduced | 13.9K | 13.6K | -304 |
| Farther Finance Advisors, LLC | Increased | 145 | 448 | +303 |
| GAMMA Investing LLC | Increased | 989 | 1.2K | +250 |
| NISA INVESTMENT ADVISORS, LLC | Increased | 558 | 808 | +250 |
| XPONANCE LLC | Reduced | 11.6K | 11.4K | -200 |
| Creative Planning | Reduced | 62.6K | 62.4K | -177 |
| Provenance Wealth Advisors, LLC | New | 0 | 149 | +149 |
| EverSource Wealth Advisors, LLC | Increased | 1.2K | 1.4K | +148 |
| UMB Bank, n.a. | Reduced | 833 | 738 | -95 |
| Sterling Capital Management LLC | Reduced | 2.5K | 2.4K | -90 |
| Ascentis Wealth Management, LLC | New | 0 | 78 | +78 |
| Plante Moran Financial Advisors, LLC | Sold Out | 73 | 0 | -73 |
| Fortitude Family Office, LLC | Reduced | 115 | 43 | -72 |
| Versant Capital Management, Inc | Reduced | 515 | 473 | -42 |
| Covestor Ltd | Reduced | 71 | 44 | -27 |
| Salomon & Ludwin, LLC | Reduced | 279 | 254 | -25 |
| Essential Partners LLC | Reduced | 1.5K | 1.5K | -16 |
| Clearstead Advisors, LLC | Increased | 47 | 60 | +13 |
| True Wealth Design, LLC | Increased | 569 | 576 | +7 |
| GILPIN WEALTH MANAGEMENT, LLC | Reduced | 9 | 6 | -3 |
| Davis Capital Management | Reduced | 12 | 11 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.