CYTEK BIOSCIENCES INC (CTKB) Institutional Ownership Changes & 13F Activity
CYTEK BIOSCIENCES INC (CTKB). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Topline Capital Management, Llc, Hhlr Advisors, Ltd., Millennium Management Llc, Brown Capital Management Llc, and Russell Investments Group, Ltd..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| State Of Tennessee, Department Of Treasury | Buy | +22,900 | — | 22,900 | $114.50K | Q4 2025 | Feb 18, 2026 |
| Mercer Global Advisors Inc | Buy | +21,726 | — | 21,726 | $109.72K | Q4 2025 | Feb 18, 2026 |
| Topline Capital Management, Llc | Buy | +7,442,466 | — | 7,442,466 | $37.58M | Q4 2025 | Feb 17, 2026 |
| Hhlr Advisors, Ltd. | Buy | +6,657,030 | — | 6,657,030 | $33.62M | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +4,752,447 | — | 4,752,447 | $24.00M | Q4 2025 | Feb 17, 2026 |
| Brown Capital Management Llc | Buy | +2,072,915 | — | 2,072,915 | $10.47M | Q4 2025 | Feb 17, 2026 |
| Russell Investments Group, Ltd. | Buy | +1,001,127 | — | 1,001,127 | $5.06M | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +957,594 | — | 957,594 | $4.84M | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +856,161 | — | 856,161 | $4.32M | Q4 2025 | Feb 17, 2026 |
| Wellington Management Group Llp | Buy | +764,279 | — | 764,279 | $3.86M | Q4 2025 | Feb 17, 2026 |
| Aqr Capital Management Llc | Buy | +743,455 | — | 743,455 | $3.75M | Q4 2025 | Feb 17, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +263,126 | — | 263,126 | $1.33M | Q4 2025 | Feb 17, 2026 |
| Fmr Llc | Buy | +234,072 | — | 234,072 | $1.18M | Q4 2025 | Feb 17, 2026 |
| Ameriprise Financial Inc | Buy | +202,316 | — | 202,316 | $1.02M | Q4 2025 | Feb 17, 2026 |
| Numerai Gp Llc | Buy | +186,764 | — | 186,764 | $943.16K | Q4 2025 | Feb 17, 2026 |
| State Of Wisconsin Investment Board | Buy | +168,563 | — | 168,563 | $851.24K | Q4 2025 | Feb 17, 2026 |
| Citadel Advisors Llc | Buy | +166,754 | — | 166,754 | $842.11K | Q4 2025 | Feb 17, 2026 |
| Alliancebernstein L.P. | Buy | +141,048 | — | 141,048 | $712.29K | Q4 2025 | Feb 17, 2026 |
| Creative Planning | Buy | +121,209 | — | 121,209 | $612.11K | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | Buy | +114,256 | — | 114,256 | $576.99K | Q4 2025 | Feb 17, 2026 |
| Pdt Partners, Llc | Buy | +91,869 | — | 91,869 | $463.94K | Q4 2025 | Feb 17, 2026 |
| Price T Rowe Associates Inc | Buy | +69,793 | — | 69,793 | $353.00K | Q4 2025 | Feb 17, 2026 |
| Mirae Asset Global Etfs Holdings Ltd. | Buy | +54,611 | — | 54,611 | $275.79K | Q4 2025 | Feb 17, 2026 |
| Susquehanna International Group, Llp | Buy | +48,103 | — | 48,103 | $242.92K | Q4 2025 | Feb 17, 2026 |
| Xtx Topco Ltd | Buy | +34,565 | — | 34,565 | $174.55K | Q4 2025 | Feb 17, 2026 |
| Two Sigma Investments, Lp | Buy | +30,032 | — | 30,032 | $151.66K | Q4 2025 | Feb 17, 2026 |
| Quantinno Capital Management Lp | Buy | +29,648 | — | 29,648 | $149.72K | Q4 2025 | Feb 17, 2026 |
| Maryland State Retirement & Pension System | Buy | +15,656 | — | 15,656 | $79.06K | Q4 2025 | Feb 17, 2026 |
| Captrust Financial Advisors | Buy | +14,047 | — | 14,047 | $70.94K | Q4 2025 | Feb 17, 2026 |
| Prelude Capital Management, Llc | Buy | +13,400 | — | 13,400 | $67.67K | Q4 2025 | Feb 17, 2026 |
Frequently asked questions about CTKB activity
Which institutional owners are buying CTKB?
Institutional owners buying CTKB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CTKB activity?
"Buy" means an investor increased their reported position in CTKB compared to the prior reporting period. This reflects growing exposure to CYTEK BIOSCIENCES INC (CTKB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CTKB increasing?
Institutional interest in CTKB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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