COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.7,191,017$155,038
VANGUARD GROUP INC5,580,271$120,311
TURTLE CREEK ASSET MANAGEMENT INC.4,036,847$87,034
EdgePoint Investment Group Inc.2,283,378$49,230
STATE STREET CORP2,070,132$44,632
Park West Asset Management LLC1,409,096$30,380
Harspring Capital Management, LLC1,402,500$30,238
Newtyn Management, LLC1,400,000$30,184
MORGAN STANLEY1,252,451$27,003
MAGNOLIA GROUP, LLC1,246,337$26,871
BANK OF AMERICA CORP /DE/1,201,461$25,903
GEODE CAPITAL MANAGEMENT, LLC1,179,231$25,429
FIRST TRUST ADVISORS LP1,177,398$25,385
FMR LLC815,939$17,592
CHARLES SCHWAB INVESTMENT MANAGEMENT INC666,932$14,379
Broad Run Investment Management, LLC663,700$14,309
BlackBarn Capital Partners LP650,000$14,014
DigitalBridge Group, Inc.636,169$13,716
GOLDMAN SACHS GROUP INC614,549$13,250
CenterBook Partners LP601,735$12,973
683 Capital Management, LLC600,000$12,936
MIG Capital, LLC569,220$12,272
Oakum Bay Capital LLC543,582$11,720
NORTHERN TRUST CORP498,973$10,758
ROYAL BANK OF CANADA498,966$10,758
GILDER GAGNON HOWE & CO LLC494,108$10,653
Palliser Capital (UK) Ltd426,184$9,189
FRONTIER CAPITAL MANAGEMENT CO LLC345,803$7,456
Man Group plc326,168$7,032
D. E. Shaw & Co., Inc.280,136$6,040
Bank of New York Mellon Corp276,933$5,971
Invesco Ltd.262,068$5,650
REAVES W H & CO INC259,098$5,586
UBS Group AG248,555$5,359
Herald Investment Management Ltd242,600$5,230
JANE STREET GROUP, LLC236,836$5,106
PRINCIPAL FINANCIAL GROUP INC227,044$4,895
BOOTHBAY FUND MANAGEMENT, LLC220,028$4,744
Granahan Investment Management, LLC217,025$4,679
Redmond Asset Management, LLC200,082$4,314
Legal & General Group Plc198,994$4,290
Advisors Asset Management, Inc.181,650$3,916
Nishkama Capital, LLC179,661$3,873
BLAIR WILLIAM & CO/IL177,655$3,830
14B Captial Management LP170,000$3,665
Nuveen, LLC169,700$3,659
JPMORGAN CHASE & CO168,603$3,635
CITADEL ADVISORS LLC167,124$3,603
Edgestream Partners, L.P.165,979$3,579
Public Sector Pension Investment Board164,692$3,551
CITIGROUP INC159,990$3,449
UBS ASSET MANAGEMENT AMERICAS INC149,747$3,229
RHUMBLINE ADVISERS137,461$2,964
SUSQUEHANNA INTERNATIONAL GROUP, LLP133,453$2,877
Walleye Capital LLC101,408$2,186
Swiss National Bank97,000$2,091
RENAISSANCE TECHNOLOGIES LLC89,031$1,920
BARCLAYS PLC88,314$1,904
SIMPLEX TRADING, LLC84,895$1,830
AMERIPRISE FINANCIAL INC84,205$1,817
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS81,643$1,760
WELLS FARGO & COMPANY/MN78,661$1,696
STATE OF WISCONSIN INVESTMENT BOARD75,154$1,620
MYDA Advisors LLC75,000$1,617
CBOE Vest Financial, LLC74,634$1,609
NEW YORK STATE TEACHERS RETIREMENT SYSTEM73,710$2
BNP PARIBAS ARBITRAGE, SA70,345$1,517
SG Americas Securities, LLC68,025$1
DEUTSCHE BANK AG\65,741$1,417
Skylands Capital, LLC61,575$1,328
Quantinno Capital Management LP61,207$1,320
ALLIANCEBERNSTEIN L.P.57,464$1,239
BROWN ADVISORY INC52,952$1,142
PRICE T ROWE ASSOCIATES INC /MD/51,298$1
HRT FINANCIAL LP49,170$1
VICTORY CAPITAL MANAGEMENT INC46,412$1,001
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM46,077$993
Bridgefront Capital, LLC45,198$974
Caption Management, LLC45,000$970
PRUDENTIAL FINANCIAL INC44,945$969
AMERICAN CENTURY COMPANIES INC43,813$945
GREAT WEST LIFE ASSURANCE CO /CAN/39,225$1
MILLENNIUM MANAGEMENT LLC38,783$836
WINTON GROUP Ltd35,604$768
Dynamic Technology Lab Private Ltd35,226$759
PRAIRIEVIEW WEALTH PARTNERS, LLC34,742$749
Jump Financial, LLC34,468$743
J. Goldman & Co LP33,500$722
Thrivent Financial for Lutherans32,614$1
Aquatic Capital Management LLC31,255$674
AQR CAPITAL MANAGEMENT LLC29,732$641
TrueMark Investments, LLC29,662$640
Zurcher Kantonalbank (Zurich Cantonalbank)28,868$622
Clear Harbor Asset Management, LLC27,716$598
MetLife Investment Management, LLC26,100$563
State of Alaska, Department of Revenue25,523$1
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.24,594$530
Creative Planning24,576$530
Walleye Trading LLC24,298$524
Pekin Hardy Strauss, Inc.24,050$519
144 other institutions905,056$17,370
Total (244 institutions)48,675,730$1,039,998