Cytek Biosciences, Inc.
DE ˙ DB ˙ US23285D1090
3,48 € ↑0,12 (3,57%)
2026-05-29
DEL PRIS
SecurityDE:8EQ / Cytek Biosciences, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership4,123,748 shares
Latest Disclosed Value $ 18,020,779
State Street Corp reports 0.56% decrease in ownership of 8EQ / Cytek Biosciences, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 4,123,748 shares of Cytek Biosciences, Inc. (DE:8EQ) valued at $15,257,868 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 4,146,964 shares of Cytek Biosciences, Inc.. This represents a change in shares of -0.56% during the quarter. The current value of the position is $14,350,643 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F CYTEK BIOSCIENCES COM 23285D109 4,123,748 -23,216 -0.56 18,021 -13.95 0.0006
2026-02-13 2025-12-31 13F CYTEK BIOSCIENCES COM 23285D109 4,146,964 62,596 1.53 20,942 47.77 0.0007
2025-11-14 2025-09-30 13F CYTEK BIOSCIENCES COM 23285D109 4,084,368 -89,395 -2.14 14,173 -0.13 0.0005
2025-08-14 2025-06-30 13F CYTEK BIOSCIENCES COM 23285D109 4,173,763 -208,411 -4.76 14,191 -19.25 0.0005
2025-05-15 2025-03-31 13F CYTEK BIOSCIENCES COM 23285D109 4,382,174 -128,204 -2.84 17,573 -39.97 0.0007
2025-02-14 2024-12-31 13F CYTEK BIOSCIENCES COM 23285D109 4,510,378 342,877 8.23 29,272 26.79 0.0012
2024-11-14 2024-09-30 13F CYTEK BIOSCIENCES COM 23285D109 4,167,501 194,369 4.89 23,088 4.14 0.0009
2024-08-14 2024-06-30 13F CYTEK BIOSCIENCES COM 23285D109 3,973,132 -142,727 -3.47 22,170 -19.72 0.0010
2024-05-15 2024-03-31 13F CYTEK BIOSCIENCES COM 23285D109 4,115,859 118,090 2.95 27,617 -24.25 0.0012
2024-02-14 2023-12-31 13F CYTEK BIOSCIENCES COM 23285D109 3,997,769 220,226 5.83 36,460 74.85 0.0018
2023-11-14 2023-09-30 13F CYTEK BIOSCIENCES COM 23285D109 3,777,543 370,108 10.86 20,852 -28.34 0.0012
2023-08-14 2023-06-30 13F CYTEK BIOSCIENCES COM 23285D109 3,407,435 1,348,163 65.47 29,099 53.77 0.0015
2023-05-15 2023-03-31 13F CYTEK BIOSCIENCES COM 23285D109 2,059,272 20,927 1.03 18,925 -9.07 0.0011
2023-05-15 2022-12-31 13F/A-99 CYTEK BIOSCIENCES COM 23285D109 2,038,345 8,092 0.40 20,812 -30.36 0.0012
2023-05-15 2022-12-31 13F CYTEK BIOSCIENCES COM 23285D109 2,038,345 8,092 20,812 0.0012
2022-11-15 2022-09-30 13F CYTEK BIOSCIENCES COM 23285D109 2,030,253 304,433 17.64 29,885 61.38 0.0019
2022-08-15 2022-06-30 13F CYTEK BIOSCIENCES COM 23285D109 1,725,820 405,162 30.68 18,518 30.07 0.0011
2022-05-16 2022-03-31 13F CYTEK BIOSCIENCES COM 23285D109 1,320,658 1,048,629 385.48 14,237 220.65 0.0007
2022-02-14 2021-12-31 13F CYTEK BIOSCIENCES COM 23285D109 272,029 64,590 31.14 4,440 -0.02 0.0002
2021-11-15 2021-09-30 13F CYTEK BIOSCIENCES COM 23285D109 207,439 207,439 4,441 0.0002
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.