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Disclosery

CTKB CYTEK BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1831915

157 managers (159 13F filers) reported a position in CTKB shares at 2025-06-30, 79,392,728 shares in all. 23 filers opened a position and 27 filers sold out during the quarter.

Managers
157
13F filers
159
New
23
Added
66
Reduced
47
Sold out
27
Shares held by filers
79,392,728

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, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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.17,035,535$57.9M<0.01%-1,033,74713F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding7,777,533$26.4M-1,844,475Timeline
BROWN CAPITAL MANAGEMENT LLC7,109,995$24.2M0.7%-353,97213F-HRTimeline
HHLR ADVISORS, LTD.in group HHLR ADVISORS, LTD.6,657,030$22.6M0.73%013F-HRTimelineGroup
Topline Capital Management, LLC5,231,260$17.8M3.05%+3,760,48513F-HRTimeline
STATE STREET CORPin group STATE STREET CORP4,173,763$14.2M<0.01%-208,41113F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP3,454,806$11.7M<0.01%+600,99713F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,729,593$9.28M<0.01%+42,91613F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND2,088,390$7.1M0.01%013F-HR/ATimeline
ROYCE & ASSOCIATES LP1,389,806$4.73M0.05%+823,98713F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,238,393$4.21M<0.01%+585,11613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,150,121$3.91M<0.01%+404,64413F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,095,994$3.73M<0.01%-55,57313F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC1,063,139$3.61M<0.01%+375,53913F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,016,557$3.46M<0.01%-141,44413F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC924,772$3.14M<0.01%+429,33513F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding916,402$3.12M+113,250Timeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co909,590$3.09M<0.01%-195,29913F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC888,339$3.02M0.01%+179,85713F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp699,913$2.38M<0.01%+7,51113F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC617,085$2.1M<0.01%+14,56813F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC572,387$1.95M<0.01%+51,64413F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO430,108$1.46M<0.01%-241,20513F-HRTimelineGroup
Numerai GP LLC422,318$1.44M0.21%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC412,311$1.4M<0.01%+134,96313F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC387,908$1.32M<0.01%+235,04513F-HR/ATimelineGroup
ALGERT GLOBAL LLC372,238$1.27M0.03%-39,18713F-HR/ATimeline
Public Sector Pension Investment Board349,736$1.19M0.01%+18,82213F-HRTimeline
Invesco Ltd.in group Invesco Ltd.343,659$1.17M<0.01%+6,70613F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…319,066$1.08M<0.01%-40,51113F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD316,676$1.08M<0.01%+5,35113F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC313,644$1.06M<0.01%+272,97713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc310,291$1.05M<0.01%+13,46213F-HRTimelineGroup
GLOBEFLEX CAPITAL L P290,511$988K0.08%013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC288,262$980K<0.01%-120,66413F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC284,838$968K<0.01%-59,33113F-HRTimelineGroup
RHUMBLINE ADVISERS282,651$961K<0.01%-13,63313F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP261,352$889K<0.01%new13F-HRTimelineGroup
Nuveen, LLCin group TIAA253,808$863K<0.01%-51,17713F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC251,273$854K<0.01%+19,09813F-HRTimelineGroup
ExodusPoint Capital Management, LP234,697$798K0.01%new13F-HRTimeline
Swiss National Bank212,100$721K<0.01%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…211,600$719K<0.01%-3,68813F-HRTimelineGroup
FMR LLCin group FMR LLC205,741$700K<0.01%-511,41913F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.151,848$516K<0.01%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC145,051$493K<0.01%+102,04713F-HR/ATimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …144,252$490K<0.01%+96,09813F-HRTimelineGroup
IEQ CAPITAL, LLC138,761$472K<0.01%+81,07913F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd115,401$392K0.02%-54,87813F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC112,667$383K<0.01%+6,28513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC109,643$373K<0.01%-46,50113F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…105,185$358K<0.01%013F-HRTimeline
CAXTON ASSOCIATES LLP103,465$352K0.01%+1,57113F-HRTimeline
Cubist Systematic Strategies, LLC96,844$329K<0.01%+39,43113F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS92,638$315K<0.01%+1,46613F-HRTimeline
PDT Partners, LLC91,869$312K0.02%-42,19613F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/91,612$311K<0.01%-240,50913F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\77,048$262K<0.01%-16,90613F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources76,588$260K<0.01%+44413F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN75,451$257K<0.01%+3,96313F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…75,439$256K<0.01%-1,19913F-HR/ATimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…73,298$249K<0.01%+5,56713F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…68,906$234K<0.01%+56,33313F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson64,873$221K<0.01%013F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…64,390$219K<0.01%-6,22413F-HRTimelineGroup
State of Alaska, Department of Revenue60,953$206K<0.01%+3,14113F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/56,821$194K<0.01%+3,48413F-HRTimeline
HRT FINANCIAL LP56,620$192K<0.01%-108,68513F-HRTimeline
Creative Planningin group Creative Planning55,677$189K<0.01%+45,65213F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…55,122$187K<0.01%-24,83213F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC51,362$175K<0.01%new13F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…48,463$165K<0.01%013F-HRTimeline
Louisiana State Employees Retirement Sy…47,900$163K<0.01%-1,20013F-HRTimeline
EntryPoint Capital, LLC47,746$162K0.08%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC46,942$160K<0.01%-20,92313F-HRTimeline
Dynamic Technology Lab Private Ltd45,714$155K0.02%+32,42713F-HRTimeline
CWM, LLCin group CWM, LLC45,420$154K<0.01%+27,40013F-HRTimelineGroup
Trexquant Investment LP45,131$153K<0.01%-503,87313F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …44,441$151K<0.01%+37913F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC38,312$130K<0.01%-41,95413F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP35,166$120K0.01%-43,89613F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…34,670$118K<0.01%013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…31,067$117K<0.01%+15,35113F-HRTimeline
SUMMIT SECURITIES GROUP LLC33,276$113K0.04%new13F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/33,072$112K<0.01%+17,37913F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM31,721$108K<0.01%+34913F-HRTimeline
Point72 Asia (Singapore) Pte. Ltd.31,595$107K0.02%+15,82413F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC31,202$106K<0.01%013F-HRTimeline
Brooklyn Investment Group30,664$104K0.01%+20,74113F-HR/ATimeline
COMERICA BANK30,413$103K<0.01%+47213F-HRTimeline
AMALGAMATED BANK29,931$102K<0.01%+71513F-HRTimeline
Police & Firemen's Retirement System of…29,469$100K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…27,795$94.5K<0.01%-39,58913F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…26,340$89.6K<0.01%+1,37113F-HRTimeline
STRS OHIO26,200$89.1K<0.01%013F-HRTimeline
ProShare Advisors LLC25,970$88.3K<0.01%-1,79713F-HRTimeline
Quantbot Technologies LP24,731$84.1K<0.01%new13F-HRTimeline
State of Tennessee, Department of Treas…24,710$84K<0.01%-43,14513F-HRTimeline
DIVERSIFIED TRUST CO24,532$83.4K<0.01%013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…24,338$83K<0.01%013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND23,475$79.8K<0.01%-47513F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA22,448$76K<0.01%+2,99113F-HR/ATimelineGroup
VICTORY CAPITAL MANAGEMENT INC21,285$72.4K<0.01%-32913F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…20,701$70.4K<0.01%013F-HRTimeline
Aquatic Capital Management LLC20,250$68.8K<0.01%+19,98413F-HRTimeline
KLP KAPITALFORVALTNING AS20,200$68.7K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…19,760$67.2K<0.01%+15,25013F-HRTimelineGroup
Sanctuary Advisors, LLC18,225$62K<0.01%new13F-HRTimeline
SlateStone Wealth, LLC17,967$61K0.01%-1,16213F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\17,808$60.5K<0.01%+7,12813F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC17,239$58.6K<0.01%new13F-HRTimelineGroup
NorthCrest Asset Manangement, LLC15,258$57.4K<0.01%-15,51913F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…16,478$56K<0.01%+12,66213F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC15,332$52.1K<0.01%new13F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC15,006$52.1K<0.01%+1,24313F-HRTimelineGroup
Aigen Investment Management, LP14,730$50.1K0.01%new13F-HRTimeline
CIBC WORLD MARKETS CORP14,487$49.3K<0.01%-11,94213F-HRTimeline
Pallas Capital Advisors LLC14,069$47.8K<0.01%new13F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…13,179$44.8K<0.01%-2,01513F-HRTimelineGroup
Everhart Financial Group, Inc.12,962$44.1K0.01%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS12,704$43.2K<0.01%new13F-HRTimeline
OXFORD ASSET MANAGEMENT LLP12,673$43.1K0.01%-13,96713F-HRTimeline
SG Americas Securities, LLC12,648$43K<0.01%-13,62613F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…12,042$40.9K<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS11,978$40.7K<0.01%-81,85313F-HRTimelineGroup
Merit Financial Group, LLC11,103$37.8K<0.01%new13F-HRTimeline
CIBC Asset Management Inc11,100$37.7K<0.01%013F-HRTimeline
State of Wyoming9,538$32.4K<0.01%-10,65413F-HRTimeline
Point72 (DIFC) Ltd8,181$27.8K<0.01%+1,61113F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.7,221$24.6K<0.01%+4,34313F-HRTimelineGroup
Farther Finance Advisors, LLC4,871$16.6K<0.01%+1,62913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC4,553$15.5K<0.01%+2,99313F-HRTimeline
Sterling Capital Management LLC3,192$10.9K<0.01%+1,13713F-HR/ATimeline
SBI Securities Co., Ltd.2,520$8.57K<0.01%+2,50013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,780$6.05K<0.01%+1,24613F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …1,856$6K<0.01%new13F-HRTimelineGroup
Essential Partners LLC1,752$5.96K<0.01%13F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…1,696$5.77K<0.01%+85913F-HRTimelineGroup
Private Wealth Management Group, LLC1,694$5.76K<0.01%new13F-HRTimeline
UMB Bank, n.a.864$2.94K<0.01%+81413F-HR/ATimeline
True Wealth Design, LLC849$2.89K<0.01%-31413F-HRTimeline
IFP Advisors, Inc608$2.6K<0.01%+60813F-HRTimeline
Clearstead Advisors, LLC627$2.13K<0.01%new13F-HRTimeline
SIGNATUREFD, LLC404$1.37K<0.01%+36013F-HRTimeline
Allworth Financial LP317$1.08K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP254$902<0.01%new13F-HRTimelineGroup
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.154$524<0.01%013F-HRTimelineGroup
Versant Capital Management, Inc151$513<0.01%-78813F-HRTimeline
ROTHSCHILD INVESTMENT LLC150$510<0.01%-7513F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK81$275<0.01%new13F-HRTimelineGroup
Parkside Financial Bank & Trust66$225<0.01%new13F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…60$204<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.20$68<0.01%013F-HR/ATimelineGroup
Larson Financial Group LLC20$68<0.01%-413F-HRTimeline
SIMPLEX TRADING, LLC215$00%+8413F-HRTimelineValue filed as zero, left out of ratios.
Covestor Ltd21$00%+1113F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.