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# Who owns Cytek Biosciences, Inc. (CTK)? Elite investor 13F holders

2 tracked elite investors reported holding Cytek Biosciences, Inc as of 2026-06-30, including D.E. Shaw, Renaissance Technologies LLC. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

2 tracked investors currently reported holding · Latest report period: 2026-06-30 · Health Care · Pharmaceuticals, Biotechnology & Life Sciences

Cytek Biosciences, Inc., a cell analysis solutions company, provides cell analysis tools that facilitate scientific advances in biomedical research and clinical applications. The company offers Cytek aurora, northern lights systems, and Cytek aurora evo systems delivers cell analysis; Cytek Aurora CS System, a cellular complexity to perform additional downstream genomic and proteomic studies…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [D.E. Shaw](https://ownershiptrace.com/13f/investors/98) | CYTEK BIOSCIENCES INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 2964476.00 USD | 669182.000000 | Shares | add | [Original filing](https://www.sec.gov/Archives/edgar/data/1009207/0001104659-26-097217-index.html) |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | CYTEK BIOSCIENCES INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 2929559.00 USD | 661300.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [Tudor Investment](https://ownershiptrace.com/13f/investors/94675) | CYTEK BIOSCIENCES INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/923093/0000902664-26-003485-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

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