Cytek Biosciences, Inc.
US ˙ NasdaqGS ˙ US23285D1090

SecurityCTKB / Cytek Biosciences, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Trexquant Investment LP closes position in CTKB / Cytek Biosciences, Inc.

On November 14, 2025 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 0 shares of Cytek Biosciences, Inc. (US:CTKB) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 12, 2025 disclosing 45,131 shares of Cytek Biosciences, Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-14 2025-09-30 13F CYTEK BIOSCIENCES COM 23285D109 0 -100.00 0
2025-08-12 2025-06-30 13F CYTEK BIOSCIENCES COM 23285D109 45,131 -503,873 -91.78 153 -93.05 0.0017
2025-05-14 2025-03-31 13F CYTEK BIOSCIENCES COM 23285D109 549,004 306,405 126.30 2,202 39.83 0.0256
2025-02-12 2024-12-31 13F CYTEK BIOSCIENCES COM 23285D109 242,599 80,909 50.04 1,574 75.87 0.0184
2024-11-12 2024-09-30 13F CYTEK BIOSCIENCES COM 23285D109 161,690 23,296 16.83 896 15.93 0.0113
2024-08-13 2024-06-30 13F CYTEK BIOSCIENCES COM 23285D109 138,394 138,394 772 0.0118
2023-05-15 2023-03-31 13F CYTEK BIOSCIENCES COM 23285D109 0 -72,179 -100.00 0 -100.00
2023-02-13 2022-12-31 13F CYTEK BIOSCIENCES COM 23285D109 72,179 72,179 737 0.0209
2022-11-14 2022-09-30 13F CYTEK BIOSCIENCES COM 23285D109 0 -74,678 -100.00 0 -100.00
2022-08-11 2022-06-30 13F CYTEK BIOSCIENCES COM 23285D109 74,678 19,082 34.32 801 33.72 0.0359
2022-05-13 2022-03-31 13F CYTEK BIOSCIENCES COM 23285D109 55,596 55,596 599 0.0281
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.