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Disclosery

CCOI COGENT COMM HOLDINGS INC

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COM NEW (common), issuer CIK 1158324

218 managers (225 13F filers) reported a position in CCOI shares at 2026-06-30, 47,277,219 shares in all. 41 filers opened a position and 46 filers sold out during the quarter.

Managers
218
13F filers
225
New
41
Added
77
Reduced
72
Sold out
46
Shares held by filers
47,277,219

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

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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.7,376,384$102M<0.01%+301,01213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding4,828,818$67M-434,519Timeline
TURTLE CREEK ASSET MANAGEMENT INC.4,203,527$58.3M2.28%-145,37013F-HRTimeline
Park West Asset Management LLC3,106,339$43.1M2.95%+1,171,13813F-HRTimeline
STATE STREET CORPin group STATE STREET CORP2,779,367$38.6M<0.01%+506,10213F-HRTimelineGroup
EdgePoint Investment Group Inc.2,283,378$31.7M0.24%013F-HRTimeline
Newtyn Management, LLC1,655,895$23M2.87%+55,89513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,245,445$17.3M<0.01%+39,81013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,172,541$16.3M0.01%+746,26113F-HRTimelineGroup
MAGNOLIA GROUP, LLC979,686$13.6M2.86%-310,51813F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC973,138$13.5M<0.01%+260,20413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co805,244$11.2M<0.01%+45,12713F-HRTimelineGroup
GILDER GAGNON HOWE & CO LLC783,783$10.9M0.11%+284,49313F-HRTimeline
Broad Run Investment Management, LLC660,130$9.16M1.41%-3,07013F-HRTimeline
UBS Group AGgroup of 2 filers holding655,778$9.1M+93,109Timeline
MORGAN STANLEYin group MORGAN STANLEY627,593$8.71M<0.01%-1,255,47913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC615,561$8.54M<0.01%+405,65213F-HRTimelineGroup
Harspring Capital Management, LLC599,418$8.32M15.49%-487,58213F-HRTimeline
HRT FINANCIAL LP557,674$7.74M0.01%+48,57913F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP516,683$7.17M<0.01%+19,48813F-HRTimelineGroup
CenterBook Partners LP503,457$6.99M0.34%+9,17413F-HRTimeline
AYAL Capital Advisors Ltd400,000$5.55M2.84%new13F-HRTimeline
FRONTIER CAPITAL MANAGEMENT CO LLC382,608$5.31M0.05%-16,60013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS328,127$4.55M<0.01%+250,32113F-HRTimelineGroup
Granahan Investment Management, LLC302,653$4.2M0.15%-14,79413F-HRTimeline
PDT Partners, LLC296,439$4.11M0.22%+12,81013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.284,694$3.95M<0.01%-454,12113F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…280,790$3.9M<0.01%+150,67713F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.268,923$3.73M<0.01%+26,49713F-HRTimelineGroup
FourWorld Capital Management LLC265,500$3.69M4.26%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp265,490$3.69M<0.01%+92113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO267,486$3.55M<0.01%-224,98213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/254,861$3.54M<0.01%-47,53213F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC251,745$3.49M0.03%new13F-HRTimelineGroup
BlackBarn Capital Partners LP250,000$3.47M0.86%-250,00013F-HRTimeline
HERALD INVESTMENT MANAGEMENT Ltd242,600$3.36M0.46%013F-HRTimeline
MYDA Advisors LLC240,000$3.33M0.81%new13F-HRTimeline
Palliser Capital (UK) Ltd236,393$3.28M1.76%-98,05113F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC233,633$3.24M<0.01%+1,42713F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC226,035$3.14M0.01%+174,78713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd220,290$3.06M0.04%+190,96613F-HRTimelineGroup
Nuveen, LLCin group TIAA169,874$2.36M<0.01%+1,37413F-HRTimelineGroup
FMR LLCin group FMR LLC165,173$2.29M<0.01%-423,61513F-HRTimelineGroup
Public Sector Pension Investment Board164,109$2.28M0.01%-5,65013F-HR/ATimeline
Global Endowment Management, LPin group Global Endowment Management, …158,582$2.2M0.22%+140,14013F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd154,019$2.14M0.04%new13F-HRTimeline
CAXTON ASSOCIATES LLP145,106$2.01M0.04%+92,22713F-HRTimeline
TUDOR INVESTMENT CORP ET AL139,269$1.93M0.01%-42313F-HRTimeline
BLAIR WILLIAM & CO/IL134,381$1.87M<0.01%-32,14013F-HRTimeline
ALGERT GLOBAL LLC132,470$1.84M0.02%new13F-HRTimeline
LPL Financial LLC122,316$1.7M<0.01%+31,73313F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC119,138$1.65M<0.01%-109,25813F-HRTimelineGroup
RHUMBLINE ADVISERS118,915$1.65M<0.01%-19,00513F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC118,403$1.64M0.03%-260,52613F-HRTimeline
Advisors Asset Management, Inc.114,375$1.59M0.02%-35,32313F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc102,920$1.43M<0.01%-3,71213F-HRTimelineGroup
Skylands Capital, LLC98,425$1.37M0.17%+29,77513F-HRTimeline
Swiss National Bank98,000$1.36M<0.01%+1,00013F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd89,009$1.24M0.04%+18,91613F-HRTimelineGroup
Schonfeld Strategic Advisors LLC86,639$1.2M0.01%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC77,824$1.08M<0.01%-2,88113F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD75,678$1.05M<0.01%+1,22413F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/73,289$1.02M<0.01%+11,47913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN69,899$970K<0.01%-28,78213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC69,619$966K<0.01%-207,86713F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…68,710$954K<0.01%-52713F-HRTimeline
ALLIANCEBERNSTEIN L.P.50,321$948K<0.01%013F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC57,476$798K<0.01%+1,04713F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\56,728$787K<0.01%+7,30813F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC56,536$781K<0.01%new13F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…54,179$752K<0.01%+8,46513F-HR/ATimeline
CITIGROUP INCin group CITIGROUP INC53,544$743K<0.01%+11,35813F-HRTimelineGroup
IMC-Chicago, LLC50,535$701K0.01%+4,36413F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC50,175$696K<0.01%+63013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC49,231$683K<0.01%-17,90013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC46,394$644K<0.01%+26,87413F-HRTimeline
Quantinno Capital Management LP45,220$628K<0.01%-63,65513F-HRTimeline
Engineers Gate Manager LP41,960$582K0.01%+12,65013F-HRTimeline
OPPENHEIMER & CO INCin group OPPENHEIMER ASSET MANAGEMENT …41,501$576K0.01%+14,85213F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co39,225$544K<0.01%013F-HRTimelineGroup
New Age Alpha Advisors, LLC37,712$523K0.02%new13F-HRTimeline
Numerai GP LLC36,370$505K0.04%new13F-HRTimeline
ExodusPoint Capital Management, LP34,982$486K<0.01%-18,62413F-HRTimeline
Salvus Wealth Management, LLC34,826$483K0.27%-3,10613F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP33,639$467K0.02%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…32,422$450K<0.01%+13313F-HRTimelineGroup
GROUP ONE TRADING LLC31,841$442K0.01%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…31,369$435K<0.01%-31213F-HRTimelineGroup
Creative Planningin group Creative Planning29,616$411K<0.01%+6,32013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…28,773$399K<0.01%+5,10613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…28,551$396K<0.01%+1,17513F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC28,294$393K<0.01%+5,89613F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC26,582$369K<0.01%new13F-HRTimelineGroup
PRAIRIEVIEW WEALTH PARTNERS, LLC25,742$357K0.27%-4,00013F-HRTimeline
SHRIER WEALTH MANAGEMENT, LLC23,453$326K0.11%+5,83513F-HRTimeline
Texas Yale Capital Corp.23,000$319K0.01%013F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…22,712$315K<0.01%-15613F-HRTimelineGroup
MIRABELLA FINANCIAL SERVICES LLP22,156$308K0.03%new13F-HRTimeline
Jupiter Topco LLCin group Janus Henderson21,111$293K<0.01%13F-HRTimelineGroup
Louisiana State Employees Retirement Sy…20,900$290K<0.01%-10013F-HR/ATimeline
FIRST CITIZENS BANK & TRUST CO20,855$289K<0.01%+8,62613F-HRTimeline
SG Americas Securities, LLC20,789$289K<0.01%-26,92813F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…20,259$281K0.02%-16,17313F-HRTimelineGroup
Clear Harbor Asset Management, LLC20,246$281K0.02%-4,27513F-HRTimeline
Envestnet Portfolio Solutions, Inc.in group ENVESTNET ASSET MANAGEMENT INC20,060$278K<0.01%+8,34113F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…19,999$278K<0.01%-23,15013F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …19,957$277K<0.01%-3713F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…19,657$273K<0.01%-4,50413F-HRTimelineGroup
RBF Capital, LLC19,500$271K0.01%-50013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC18,935$263K<0.01%-70413F-HRTimelineGroup
State of Tennessee, Department of Treas…18,449$256K<0.01%+7,61313F-HRTimeline
Quantbot Technologies LP18,267$254K0.01%new13F-HRTimeline
TWINBEECH CAPITAL LP17,769$247K0.04%+1,36913F-HRTimeline
Natixis Investment Managersgroup of 2 filers holding17,200$239K+2,300Timeline
State of Alaska, Department of Revenue17,088$236K<0.01%-7,73613F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV16,595$230K<0.01%+1,00313F-HR/ATimeline
NEW YORK STATE COMMON RETIREMENT FUND15,769$219K<0.01%013F-HRTimeline
Cetera Investment Advisers15,718$218K<0.01%+11913F-HRTimeline
Pekin Hardy Strauss, Inc.15,450$214K0.02%+2,50013F-HRTimeline
SIMPLEX TRADING, LLC14,966$208K0.01%-76,92713F-HRTimeline
Entropy Technologies, LP14,932$207K0.01%new13F-HRTimeline
Rangeley Capital, LLC14,000$194K0.18%new13F-HRTimeline
Police & Firemen's Retirement System of…13,586$189K<0.01%013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM13,479$187K<0.01%-1313F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd13,228$184K<0.01%-12,45713F-HRTimelineGroup
AMALGAMATED BANK12,890$179K<0.01%-81613F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC12,743$177K<0.01%+13113F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC12,710$176K<0.01%new13F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding12,270$170K-234,424Timeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP11,747$163K<0.01%new13F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…11,754$163K<0.01%013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC11,455$159K<0.01%new13F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…11,328$157K<0.01%-41013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC11,270$156K<0.01%-21713F-HRTimeline
Inspire Investing, LLCgroup of 2 filers holding11,164$156KnewTimeline
Arax Advisory Partners11,007$153K<0.01%+10,13813F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…10,818$150K<0.01%-29113F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND10,816$150K<0.01%013F-HRTimeline
KLP KAPITALFORVALTNING AS10,300$143K<0.01%013F-HRTimeline
PFG Investments, LLC10,257$142K0.01%+413F-HRTimeline
BTG Pactual Asset Management US LLCin group BTG Pactual Asset Management …10,200$142K0.01%new13F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…11,172$141K<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA7,112$99K<0.01%+1,66513F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,256$87K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,476$62.1K<0.01%+71313F-HRTimelineGroup
Fulcrum Asset Management LLP4,642$61K0.01%new13F-HRTimeline
Farther Finance Advisors, LLC4,086$56.6K<0.01%+21113F-HRTimeline
NISA INVESTMENT ADVISORS, LLC3,923$54.5K<0.01%-1,52813F-HRTimeline
Integrated Wealth Concepts LLC3,793$52.6K<0.01%new13F-HRTimeline
Ensign Peak Advisors, Inc3,309$45.9K<0.01%-80013F-HRTimeline
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…3,300$45.8K0.01%+62013F-HRTimeline
SBI Securities Co., Ltd.3,254$45.2K<0.01%+79413F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,569$35.7K<0.01%+1,41913F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\2,358$32.7K<0.01%-2513F-HRTimelineGroup
North Star Investment Management Corp.2,298$31.9K<0.01%013F-HRTimeline
Nykredit A/Sin group Nykredit A/S2,298$31.9K<0.01%13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,094$29.1K<0.01%-2,58313F-HRTimelineGroup
Caitlin John, LLC1,954$27.1K0.01%+50513F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…1,881$26.1K<0.01%+50013F-HRTimeline
KBC Group NVin group KBC Group NV1,761$24K<0.01%013F-HRTimelineGroup
Federation des caisses Desjardins du Qu…1,570$21.8K<0.01%-1,48013F-HRTimeline
Security National Bank1,500$20.8K<0.01%013F-HRTimeline
Allworth Financial LP1,340$18.6K<0.01%+96213F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.1,081$15K<0.01%-1,67913F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Pinnacle Wealth Planning Services, Inc.1,016$14.1K<0.01%-32713F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.979$14K<0.01%-6113F-HRTimeline
Caitong International Asset Management …892$12.4K<0.01%-9613F-HRTimeline
Versant Capital Management, Inc875$12.1K<0.01%-4813F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …865$12K<0.01%-22413F-HRTimelineGroup
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp824$11.4K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC796$11K<0.01%-90313F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…598$8.3K<0.01%+20313F-HRTimelineGroup
PIN OAK INVESTMENT ADVISORS INC590$8K0.01%013F-HR/ATimeline
IFP Advisors, Inc434$6.02K<0.01%+34913F-HRTimeline
Parallel Advisors, LLC366$5.08K<0.01%-1,06613F-HRTimeline
UMB Bank, n.a.335$4.65K<0.01%+18113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Essential Partners LLC309$4.29K<0.01%-57913F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.244$3.39K<0.01%+2713F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC234$3.25K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC234$3.08K<0.01%013F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/209$2.9K<0.01%+11613F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP197$2.64K<0.01%-86113F-HRTimelineGroup
Sterling Capital Management LLC173$2.4K<0.01%-14313F-HRTimeline
ROTHSCHILD INVESTMENT LLC172$2.39K<0.01%+6913F-HRTimeline
AdvisorNet Financial, Inc150$2.08K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…146$2.03K<0.01%013F-HRTimelineGroup
SJS Investment Consulting Inc.138$1.92K<0.01%new13F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…133$1.85K<0.01%013F-HRTimelineGroup
MassMutual Private Wealth & Trust, FSB111$1.54K<0.01%new13F-HRTimeline
True Wealth Design, LLC91$1.26K<0.01%new13F-HRTimeline
Salomon & Ludwin, LLC87$1.24K<0.01%-23313F-HRTimeline
Larson Financial Group LLC86$1.19K<0.01%+4813F-HRTimeline
Wealth Enhancement Trust Services, Inc.85$1.18K<0.01%new13F-HR/ATimeline
Steward Partners Investment Advisory, L…80$1.11K<0.01%-90013F-HRTimeline
Prestige Wealth Management Group LLC58$806<0.01%013F-HRTimeline
Quarry LP38$527<0.01%new13F-HRTimeline
Physician Wealth Advisors, Inc.30$417<0.01%new13F-HRTimeline
Clearstead Advisors, LLC29$403<0.01%new13F-HRTimeline
Millstone Evans Group, LLC29$403<0.01%013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…27$375<0.01%013F-HRTimelineGroup

Events

  • BlackRock, Inc. reported 3,932,477 CCOI shares, 7.7% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-05. 0002012383-26-003317

    Accepted , ingested