사이텍 바이오사이언스, Inc.
US ˙ NasdaqGS ˙ US23285D1090

SecurityCTKB / Cytek Biosciences, Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership183,239 shares
Latest Disclosed Value $ 925,357
Barclays Plc reports 10.67% increase in ownership of CTKB / Cytek Biosciences, Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 183,239 shares of Cytek Biosciences, Inc. (US:CTKB) valued at $925,357 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 165,572 shares of Cytek Biosciences, Inc.. This represents a change in shares of 10.67% during the quarter. The current value of the position is $793,425 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)
2026-02-13 2025-12-31 13F CYTEK BIOSCIENCES COM 23285D109 183,239 17,667 10.67 925 61.15 0.0002
2026-03-31 2025-09-30 13F/A-3 CYTEK BIOSCIENCES COM 23285D109 165,572 -222,336 -57.32 575 -56.45 0.0001
2026-03-19 2025-09-30 13F/A-2 CYTEK BIOSCIENCES COM 23285D109 201,359 -186,549 1,116 0.0003
2025-11-12 2025-09-30 13F CYTEK BIOSCIENCES COM 23285D109 165,572 -222,336 575 0.0001
2026-02-27 2025-06-30 13F/A-2 CYTEK BIOSCIENCES COM 23285D109 387,908 235,045 153.76 1,319 115.36 0.0003
2025-08-14 2025-06-30 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 387,908 235,045 1 0.0003
2025-08-13 2025-06-30 13F CYTEK BIOSCIENCES COM 23285D109 387,908 235,045 1 0.0001
2026-03-17 2025-03-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 152,863 -62,561 -29.04 613 -56.22 0.0002
2025-05-15 2025-03-31 13F CYTEK BIOSCIENCES COM 23285D109 152,863 -62,561 1 0.0002
2026-03-19 2024-12-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 215,424 14,065 6.99 1,398 25.38 0.0004
2025-02-13 2024-12-31 13F CYTEK BIOSCIENCES COM 23285D109 215,424 14,065 1 0.0004
2026-03-31 2024-09-30 13F/A-2 CYTEK BIOSCIENCES COM 23285D109 201,359 154,915 333.55 1,116 330.50 0.0003
2024-11-19 2024-09-30 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 201,359 154,915 1 0.0003
2024-11-15 2024-09-30 13F CYTEK BIOSCIENCES COM 23285D109 201,359 154,915 1 0.0001
2026-03-23 2024-06-30 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 46,444 -60,174 -56.44 259 -63.78 0.0001
2024-08-14 2024-06-30 13F CYTEK BIOSCIENCES COM 23285D109 46,444 -60,174 0 0.0001
2026-03-24 2024-03-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 106,618 -82,725 -43.69 715 -58.57 0.0002
2024-05-15 2024-03-31 13F CYTEK BIOSCIENCES COM 23285D109 106,618 -82,725 1 0.0002
2026-03-25 2023-12-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 189,343 140,164 285.01 1,727 536.90 0.0006
2024-02-15 2023-12-31 13F CYTEK BIOSCIENCES COM 23285D109 189,343 140,164 2 0.0006
2026-03-26 2023-09-30 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 49,179 411 0.84 271 -34.86 0.0002
2023-11-07 2023-09-30 13F CYTEK BIOSCIENCES COM 23285D109 49,179 411 0 0.0002
2026-03-30 2023-06-30 13F/A-2 CYTEK BIOSCIENCES COM 23285D109 48,768 -9,021 -15.61 416 -21.66 0.0003
2023-09-20 2023-06-30 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 48,768 -9,021 0 0.0003
2023-08-03 2023-06-30 13F CYTEK BIOSCIENCES COM 23285D109 48,768 -9,021 0 0.0003
2026-03-30 2023-03-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 57,789 27,130 88.49 531 69.65 0.0002
2023-05-04 2023-03-31 13F CYTEK BIOSCIENCES COM 23285D109 57,789 27,130 1 0.0002
2026-03-30 2022-12-31 13F/A-1 CYTEK BIOSCIENCES COM 23285D109 30,659 25,818 533.32 313 340.85 0.0001
2023-02-13 2022-12-31 13F CYTEK BIOSCIENCES COM 23285D109 30,659 25,818 0 0.0001
2022-11-03 2022-09-30 13F CYTEK BIOSCIENCES COM 23285D109 4,841 -12,810 -72.57 71 -62.43 0.0001
2022-08-12 2022-06-30 13F CYTEK BIOSCIENCES COM 23285D109 17,651 -15,005 -45.95 189 -46.15 0.0001
2022-05-16 2022-03-31 13F CYTEK BIOSCIENCES COM 23285D109 32,656 32,656 351 0.0003
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.