CCOI · NASDAQ · Telecommunications Services

Cogent Communications (CCOI)

Tier 1 IP backbone built on distressed fiber, serving corporate, net-centric, and enterprise buyers.

$9.31
After hours−0.01 (−0.11%)
At close$9.32(+0.32%)

13F · 13D/G · Form 4

Institutions93.88%48.08M shares
239 holders · as of Jun 30, 2026
Insiders2.86%1.46M shares
13 holders · as of Sep 15, 2026
Strategic holders0.07%33.8K shares
1 holder · as of Jul 1, 2026
Other3.19%1.63M shares
remainder

51.22M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
BlackRock, Inc.Institution
14.40%7.38Mas of Jun 30, 2026
Turtle Creek Asset Management Inc.Institution
8.21%4.20Mas of Jun 30, 2026
Park West Asset Management LLCInstitution
6.07%3.11Mas of Jun 30, 2026
State Street CorpInstitution
5.43%2.78Mas of Jun 30, 2026
Vanguard Portfolio Management LLCInstitution
4.66%2.38Mas of Jun 30, 2026
Edgepoint Investment Group Inc.Institution
4.46%2.28Mas of Jun 30, 2026
Vanguard Capital Management LLCInstitution
3.98%2.04Mas of Jun 30, 2026
Newtyn Management, LLCInstitution
3.23%1.66Mas of Jun 30, 2026
Geode Capital Management, LLCInstitution
2.43%1.25Mas of Jun 30, 2026
Citadel Advisors LLCInstitution
2.29%1.17Mas of Jun 30, 2026
Magnolia Group, LLCInstitution
1.91%979,686as of Jun 30, 2026
Goldman Sachs Group IncInstitution
1.90%973,138as of Jun 30, 2026
Charles Schwab Investment Management IncInstitution
1.57%805,244as of Jun 30, 2026
Sixth Street Partners Management Company, L.P.Institution
1.57%805,244as of Jun 30, 2026
Gilder Gagnon Howe & Co LLCInstitution
1.53%783,783as of Jun 30, 2026
Broad Run Investment Management, LLCInstitution
1.29%660,130as of Jun 30, 2026
Morgan StanleyInstitution
1.23%627,593as of Jun 30, 2026
AQR Capital Management LLCInstitution
1.20%615,561as of Jun 30, 2026
Dave Schaeffer1Insiderdirector, officer: CHAIRMAN, CEO, AND PRESIDENT
1.19%609,143filed May 4, 2026
Harspring Capital Management, LLCInstitution
1.17%599,418as of Jun 30, 2026
HRT Financial LPInstitution
1.09%557,674as of Jun 30, 2026
Northern Trust CorpInstitution
1.01%516,683as of Jun 30, 2026
UBS Group AGInstitution
1.00%512,618as of Jun 30, 2026
Centerbook Partners LPInstitution
0.98%503,457as of Jun 30, 2026
Ayal Capital Advisors LtdInstitution
0.78%400,000as of Jun 30, 2026
  1. Dave Schaeffer reports a block also reported by Geode Capital Management, LLC; it is counted once, under Geode Capital Management, LLC.

13F, as of Jun 30, 2026

239 holders · 48.08M shares · 44 new positions · 122 increased · 75 reduced · 53 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.7.38M14.40%+301.0KAug 7, 2026
Turtle Creek Asset Management Inc.4.20M8.21%−145.4KAug 14, 2026
Park West Asset Management LLC3.11M6.07%+1.17MAug 14, 2026
State Street Corp2.78M5.43%+506.1KAug 7, 2026
Vanguard Portfolio Management LLC2.38M4.66%−363.8KAug 13, 2026
Edgepoint Investment Group Inc.2.28M4.46%0Aug 14, 2026
Vanguard Capital Management LLC2.04M3.98%−82.8KAug 13, 2026
Newtyn Management, LLC1.66M3.23%+55.9KAug 14, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
BlackRock, Inc.14.40%7.07M13GJan 23, 2026
Turtle Creek Asset Management Inc.8.20%4.04M13GFeb 17, 2026
Park West Asset Management LLC5.60%2.81M13GJun 17, 2026
Vanguard Portfolio Management5.57%2.79M13GApr 29, 2026
State Street Corporation5.50%2.78M13GAug 7, 2026

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Sep 15, 2026
Henry W. Kilmerofficer: VP OF NETWORK STRATEGY
Sale2,400$9.2136,200
Sep 2, 2026
Thaddeus Gerard Weedofficer: VICE PRESIDENT, CFO
Sale4,850$9.37193,050
Jun 16, 2026
Thaddeus Gerard Weedofficer: VICE PRESIDENT, CFO
Sale4,850$16.79197,900
Jun 15, 2026
Henry W. Kilmerofficer: VP OF NETWORK STRATEGY
Sale2,400$17.0138,600
May 28, 2026
Lewis H. FERGUSONdirector
Sale2,800$20.3621,094
May 14, 2026
Sheryl Lynn Kennedydirector
Sale3,300$16.2210,245
Mar 6, 2026
Henry W. Kilmerofficer: VP OF NETWORK STRATEGY
Sale2,400$23.3541,000
Mar 5, 2026
Thaddeus Gerard Weedofficer: VICE PRESIDENT, CFO
Sale4,850$22.63202,750
Mar 5, 2026
Sheryl Lynn Kennedydirector
Sale3,300$22.9910,100
Mar 5, 2026
Lewis H. FERGUSONdirector
Sale2,206$23.0320,449

House and Senate disclosures

Not reported.