Skip to content
Disclosery

CTKB CYTEK BIOSCIENCES INC

Follow

COMMON STOCK (common), issuer CIK 1831915

160 managers (165 13F filers) reported a position in CTKB shares at 2026-03-31, 85,067,769 shares in all. 20 filers opened a position and 11 filers sold out during the quarter.

Managers
160
13F filers
165
New
20
Added
68
Reduced
51
Sold out
11
Shares held by filers
85,067,769

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.17,007,269$74.3M<0.01%-165,75913F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding7,856,051$34.3M+7,843,806Timeline
Topline Capital Management, LLC7,064,481$30.9M5.1%-377,98513F-HRTimeline
HHLR ADVISORS, LTD.in group HHLR ADVISORS, LTD.6,657,030$29.1M1.74%013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC6,291,798$27.5M0.02%+1,539,35113F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp5,802,773$25.4M0.03%+794,46413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP4,123,748$18M<0.01%-23,21613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,833,955$12.4M<0.01%+43,38113F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,663,329$11.6M<0.01%+16,43813F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,344,735$10.2M<0.01%+554,82113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,718,875$7.51M<0.01%+17,89013F-HRTimelineGroup
ROYCE & ASSOCIATES LP1,642,368$7.18M0.07%-50,28913F-HRTimeline
BROWN CAPITAL MANAGEMENT LLC1,480,506$6.47M0.92%-592,40913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…1,359,900$5.94M0.01%+358,77313F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,104,601$4.83M<0.01%+10,06213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,009,054$4.41M<0.01%+152,89313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,005,193$4.39M<0.01%+47,59913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC912,342$3.99M<0.01%+168,88713F-HRTimelineGroup
Simcoe Capital LLC882,113$3.85M3.54%+583,65213F-HRTimeline
CenterBook Partners LP729,874$3.19M0.17%new13F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC676,700$2.96M<0.01%+1,70013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp608,647$2.66M<0.01%-29,28213F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC534,759$2.34M<0.01%-132,16813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC471,392$2.06M<0.01%+304,63813F-HRTimelineGroup
HRT FINANCIAL LP414,052$1.81M<0.01%-23,60113F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC398,988$1.74M<0.01%-275,48713F-HRTimelineGroup
Public Sector Pension Investment Board394,718$1.72M0.01%+15,44413F-HRTimeline
Invesco Ltd.in group Invesco Ltd.388,233$1.7M<0.01%-10,56413F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL320,715$1.4M0.01%new13F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …319,909$1.4M<0.01%-41,76813F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO299,090$1.29M<0.01%-29,76313F-HR/ATimelineGroup
FMR LLCin group FMR LLC283,386$1.24M<0.01%+49,31413F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC281,681$1.23M<0.01%-2,96313F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.260,125$1.14M<0.01%-3,00113F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC257,292$1.12M<0.01%-6,88513F-HRTimeline
RHUMBLINE ADVISERS254,589$1.11M<0.01%+4,64913F-HRTimeline
Nuveen, LLCin group TIAA245,521$1.07M<0.01%-8,28713F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…241,504$1.06M<0.01%-54,13213F-HRTimeline
UBS Group AGgroup of 2 filers holding187,463$819K-273,416Timeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC187,270$818K<0.01%-15,04613F-HR/ATimelineGroup
Legal & General Group Plcin group Legal & General Group Plc182,860$799K<0.01%-5,60813F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.141,048$712K<0.01%013F-HRTimeline
IEQ CAPITAL, LLC144,392$631K<0.01%+20,40113F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC141,385$618K<0.01%+43,55513F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC117,597$514K<0.01%+10,74013F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources113,973$498K<0.01%+103,61613F-HRTimelineGroup
Numerai GP LLC112,460$491K0.05%-74,30413F-HRTimeline
GSA CAPITAL PARTNERS LLP109,116$477K0.03%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\104,437$456K<0.01%+11,29813F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD104,046$455K<0.01%-64,51713F-HRTimeline
Creative Planningin group Creative Planning89,937$393K<0.01%-31,27213F-HRTimelineGroup
PDT Partners, LLC86,869$380K0.02%-5,00013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/80,142$351K<0.01%+10,34913F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS78,044$341K<0.01%-28,23813F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…73,399$321K<0.01%-2,16113F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…64,517$282K<0.01%+6,75913F-HRTimelineGroup
State of Alaska, Department of Revenue61,269$267K<0.01%013F-HRTimeline
Illinois Municipal Retirement Fund60,877$266K<0.01%new13F-HRTimeline
CWM, LLCin group CWM, LLC60,724$265K<0.01%+8,11013F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…72,700$260K<0.01%+36,97513F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC58,123$254K<0.01%+8,59513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…56,010$245K<0.01%+7,90713F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…55,145$241K<0.01%+53413F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC51,593$225K<0.01%013F-HRTimeline
Quantinno Capital Management LP51,212$224K<0.01%+21,56413F-HRTimeline
Louisiana State Employees Retirement Sy…48,800$213K<0.01%-1,60013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN45,277$198K<0.01%-87,39813F-HR/ATimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…44,829$196K<0.01%-3,63413F-HRTimeline
ALGERT GLOBAL LLC42,560$186K<0.01%new13F-HR/ATimeline
CANADA PENSION PLAN INVESTMENT BOARD41,300$180K<0.01%new13F-HRTimeline
nVerses Capital, LLC38,319$167K0.15%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND34,922$153K<0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…34,670$152K<0.01%013F-HRTimeline
SG Americas Securities, LLC34,606$151K<0.01%-29,68113F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth33,677$147K<0.01%+18013F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …32,199$141K<0.01%-3,43313F-HRTimelineGroup
AMALGAMATED BANK31,901$139K<0.01%-53513F-HRTimeline
Police & Firemen's Retirement System of…29,469$129K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV29,115$127K<0.01%+7,38913F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC28,892$126K<0.01%new13F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…27,193$119K<0.01%-3013F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC27,078$118K<0.01%+46813F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC27,026$118K<0.01%new13F-HRTimelineGroup
STRS OHIO26,200$114K<0.01%013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC25,629$112K<0.01%-26,11113F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP25,600$112K<0.01%-4,43213F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC25,296$111K<0.01%new13F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND25,175$110K<0.01%013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…24,909$109K<0.01%+23,99713F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…24,338$107K<0.01%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC24,143$106K<0.01%-159,09613F-HRTimelineGroup
State of Tennessee, Department of Treas…22,900$100K<0.01%013F-HRTimeline
Caitong International Asset Management …20,794$90.9K0.02%+15,65013F-HRTimeline
BAILARD, INC.19,900$87K<0.01%-9,40013F-HRTimeline
AXQ CAPITAL, LP19,708$86.1K0.01%+58413F-HRTimeline
ProShare Advisors LLC18,216$79.6K<0.01%-4,51713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…17,927$78.3K<0.01%+1,59013F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC17,807$77.8K<0.01%-75813F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC17,621$77K<0.01%-713F-HRTimeline
CAPTRUST FINANCIAL ADVISORS16,434$71.8K<0.01%+2,38713F-HRTimeline
Merit Financial Group, LLC16,398$71.7K<0.01%new13F-HRTimeline
NorthCrest Asset Manangement, LLC15,216$68.9K<0.01%+92713F-HRTimeline
Maryland State Retirement & Pension Sys…15,656$68.4K<0.01%013F-HRTimeline
Dynamic Technology Lab Private Ltd14,778$64.6K0.01%-29,49613F-HRTimeline
AE Wealth Management LLC14,193$62K<0.01%new13F-HRTimeline
Pallas Capital Advisors LLC13,464$58.8K<0.01%-48913F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC13,200$57.7K<0.01%-20013F-HRTimeline
Everhart Financial Group, Inc.12,962$56.6K<0.01%013F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…12,584$55K<0.01%+1613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC12,454$54.4K<0.01%-9,70913F-HRTimelineGroup
State of Wyoming12,253$53.5K0.01%-76913F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC11,229$49.1K<0.01%-1,17513F-HRTimelineGroup
XPONANCE LLC10,593$46.3K<0.01%new13F-HRTimeline
M&T Bank Corpin group M&T Bank Corp10,308$45K<0.01%+5113F-HR/ATimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…10,240$44.7K<0.01%+7,00213F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…9,823$42.9K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…6,362$27.8K<0.01%-87513F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.5,335$23.3K<0.01%+75613F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…5,199$22.7K<0.01%+4,17313F-HRTimelineGroup
SBI Securities Co., Ltd.5,010$21.9K<0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.4,313$18.8K<0.01%+82513F-HRTimeline
Sterling Capital Management LLC3,919$17.1K<0.01%-2,90313F-HRTimeline
NISA INVESTMENT ADVISORS, LLC3,754$16.4K<0.01%+10113F-HRTimeline
SIMPLEX TRADING, LLC3,226$14.1K<0.01%+1,22313F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.3,175$13.9K<0.01%new13F-HR/ATimelineGroup
Salomon & Ludwin, LLC2,701$12.2K<0.01%+2,24113F-HRTimeline
Versant Capital Management, Inc2,735$12K<0.01%+2,30013F-HRTimeline
Essential Partners LLC2,582$11.3K<0.01%+64813F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,299$10K<0.01%-3,22613F-HRTimelineGroup
GROUP ONE TRADING LLC2,200$9.61K<0.01%+70013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,821$7.96K<0.01%+24213F-HR/ATimelineGroup
SUMMIT SECURITIES GROUP LLC1,704$7.45K<0.01%new13F-HRTimeline
Private Wealth Management Group, LLC1,694$7.4K<0.01%013F-HRTimeline
GAMMA Investing LLC1,631$7.13K<0.01%+1,11413F-HRTimeline
UMB Bank, n.a.1,405$6.14K<0.01%+2313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Allworth Financial LP1,390$6.08K<0.01%+34113F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,142$4.99K<0.01%+1,02513F-HRTimelineGroup
IFP Advisors, Inc986$4.31K<0.01%+27613F-HRTimeline
True Wealth Design, LLC711$3.11K<0.01%+9813F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC593$3K<0.01%013F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.587$3K<0.01%+29813F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
US BANCORP \DE\in group US BANCORP \DE\557$2.43K<0.01%+10313F-HRTimelineGroup
Larson Financial Group LLC471$2.06K<0.01%+41713F-HRTimeline
SIGNATUREFD, LLC438$1.91K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC394$1.72K<0.01%+11813F-HRTimeline
Arax Advisory Partners221$1.67K<0.01%+20913F-HRTimeline
Stone House Investment Management, LLC318$1.39K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP254$1.1K<0.01%013F-HRTimelineGroup
Prestige Wealth Management Group LLC240$1.05K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC176$788<0.01%+8113F-HRTimeline
Wealth Preservation Advisors, LLC109$476<0.01%new13F-HRTimeline
Keating Financial Advisory Services, In…86$376<0.01%+8413F-HRTimeline
MAI Capital Management78$341<0.01%new13F-HRTimeline
Parkside Financial Bank & Trust66$289<0.01%-12713F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…60$262<0.01%013F-HRTimelineGroup
Ankerstar Wealth, LLC60$262<0.01%+4613F-HRTimeline
Root Financial Partners, LLC42$184<0.01%new13F-HRTimeline
GILPIN WEALTH MANAGEMENT, LLC13$57<0.01%+413F-HRTimeline
SJS Investment Consulting Inc.6$27<0.01%new13F-HRTimeline
Covestor Ltd21$00%013F-HRTimelineValue filed as zero, left out of ratios.