Latest Period
Q2 2026
Security Snapshot
COGENT COMMUNICATIONS HOLDINGS, INC. - COMMON STOCK (CCOI) Institutional Ownership
CUSIP: 19239V302
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
223
Shares (Excl. Options)
47,277,194
Price
$13.88
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- CCOI on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 47,277,194
- Total 13F value
- $656,269,450
- Portfolio coverage rank
- 0%
- Share change
- -1,004,250
- Value change
- -$25,188,613
- Number of holders
- 223
- Shares outstanding
- 50,534,473
- SEC-reported price per share
- $10.82
- Insider filing price
- $10.82
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - COMMON STOCK is tracked under CUSIP 19239V302.
- 223 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 230 to 223 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $919,117,574 to $656,269,450.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 223 institutions filings for Q2 2026.
Security key
19239V302
Latest holder period
Q2 2026
13F holders
223
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
CCOI full holder history
COGENT COMMUNICATIONS HOLDINGS, INC. SEC filings
COGENT COMMUNICATIONS HOLDINGS, INC. company facts
COGENT COMMUNICATIONS HOLDINGS, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 19239V302:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
CCOI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | +11% | $152,394,639 | +$14,455,053 | 7,068,397 | +10% | BlackRock, Inc. | 31 Dec 2025 |
| Turtle Creek Asset Management Inc. | 8.2% | -13% | $87,034,421 | -$12,226,374 | 4,036,847 | -12% | Turtle Creek Asset Management Inc. | 31 Dec 2025 |
| Park West Asset Management LLC | 5.6% | +10% | $48,325,158 | +$4,474,341 | 2,806,339 | +10% | Park West Asset Management LLC | 10 Jun 2026 |
| STATE STREET CORP | 5.5% | $38,578,016 | 2,779,396 | STATE STREET CORPORATION | 30 Jun 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.8% | -12% | $33,749,636 | -$4,991,415 | 2,431,530 | -13% | Vanguard Portfolio Management | 30 Jun 2026 |
As of 30 Jun 2026, 223 institutional investors reported holding 47,277,194 shares of COGENT COMMUNICATIONS HOLDINGS, INC. - COMMON STOCK (CCOI). This represents 94% of the company’s total 50,534,473 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
74%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | 7,376,384 | +4.3% | 0% | $102,384,215 |
| TURTLE CREEK ASSET MANAGEMENT INC. | 8.3% | 4,203,527 | -3.3% | 2.3% | $58,344,955 |
| Park West Asset Management LLC | 6.1% | 3,106,339 | +61% | 2.9% | $43,115,985 |
| STATE STREET CORP | 5.5% | 2,779,367 | +22% | 0% | $38,577,614 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.7% | 2,384,929 | -13% | 0% | $33,102,815 |
| EdgePoint Investment Group Inc. | 4.5% | 2,283,378 | 0% | 0.24% | $31,693,287 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4% | 2,037,716 | -3.9% | 0% | $28,283,498 |
| Newtyn Management, LLC | 3.3% | 1,655,895 | +3.5% | 2.9% | $22,983,823 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 1,245,445 | +3.3% | 0% | $17,290,622 |
| CITADEL ADVISORS LLC | 2.3% | 1,172,541 | +175% | 0.01% | $16,274,869 |
| MAGNOLIA GROUP, LLC | 1.9% | 979,686 | -24% | 2.9% | $13,598,042 |
| GOLDMAN SACHS GROUP INC | 1.9% | 973,138 | +36% | 0% | $13,507,153 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.6% | 805,244 | +5.9% | 0% | $11,176,787 |
| GILDER GAGNON HOWE & CO LLC | 1.6% | 783,783 | +57% | 0.11% | $10,878,908 |
| Broad Run Investment Management, LLC | 1.3% | 660,130 | -0.46% | 1.4% | $9,162,604 |
| MORGAN STANLEY | 1.2% | 627,593 | -67% | 0% | $8,711,004 |
| AQR CAPITAL MANAGEMENT LLC | 1.2% | 615,561 | +193% | 0% | $8,543,988 |
| Harspring Capital Management, LLC | 1.2% | 599,418 | -45% | 15% | $8,319,922 |
| HRT FINANCIAL LP | 1.1% | 557,674 | +9.5% | 0.01% | $7,740,000 |
| NORTHERN TRUST CORP | 1% | 516,683 | +3.9% | 0% | $7,171,559 |
| UBS Group AG | 1% | 512,618 | +20% | 0% | $7,115,138 |
| CenterBook Partners LP | 1% | 503,457 | +1.9% | 0.34% | $6,987,983 |
| AYAL Capital Advisors Ltd | 0.79% | 400,000 | 2.8% | $5,552,000 | |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 0.76% | 382,608 | -4.2% | 0.05% | $5,310,595 |
| VANGUARD FIDUCIARY TRUST CO | 0.68% | 344,108 | +2.9% | 0% | $4,776,219 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 47,277,194 | $656,269,450 | -$25,188,613 | $13.88 | 223 |
| 2026 Q1 | 48,814,238 | $919,117,574 | +$12,831,416 | $18.84 | 230 |
| 2025 Q4 | 48,834,853 | $1,052,943,849 | -$138,869,300 | $21.56 | 246 |
| 2025 Q3 | 50,722,127 | $1,945,123,201 | +$44,099,071 | $38.35 | 265 |
| 2025 Q2 | 48,818,575 | $2,352,877,531 | +$84,999,189 | $48.21 | 293 |
| 2025 Q1 | 46,339,972 | $2,840,719,279 | +$22,583,251 | $61.31 | 318 |
| 2024 Q4 | 46,466,518 | $3,580,744,470 | +$6,816,296 | $77.07 | 311 |
| 2024 Q3 | 46,313,808 | $3,516,359,267 | +$41,161,043 | $75.92 | 313 |
| 2024 Q2 | 45,947,357 | $2,593,304,392 | +$51,039,935 | $56.44 | 309 |
| 2024 Q1 | 44,774,908 | $2,925,828,667 | +$57,063,178 | $65.33 | 313 |
| 2023 Q4 | 43,851,639 | $3,335,158,917 | +$122,856,158 | $76.06 | 310 |
| 2023 Q3 | 42,213,412 | $2,613,191,827 | -$38,570,159 | $61.90 | 308 |
| 2023 Q2 | 42,706,441 | $2,872,879,628 | +$58,309,297 | $67.29 | 278 |
| 2023 Q1 | 41,862,360 | $2,667,557,312 | +$50,205,576 | $63.72 | 268 |
| 2022 Q4 | 41,209,594 | $2,352,496,729 | -$5,163,774 | $57.08 | 279 |
| 2022 Q3 | 41,333,373 | $2,155,799,504 | -$30,563,279 | $52.16 | 249 |
| 2022 Q2 | 41,684,363 | $2,533,167,492 | +$33,667,056 | $60.76 | 252 |
| 2022 Q1 | 41,466,710 | $2,749,948,952 | +$11,402,661 | $66.35 | 264 |
| 2021 Q4 | 41,274,412 | $3,020,568,658 | +$11,344,041 | $73.18 | 275 |
| 2021 Q3 | 41,047,868 | $2,909,189,463 | +$36,014,007 | $70.84 | 253 |
| 2021 Q2 | 40,490,656 | $3,112,527,851 | -$26,796,626 | $76.89 | 253 |
| 2021 Q1 | 40,942,777 | $2,815,267,382 | -$14,940,409 | $68.76 | 246 |
| 2020 Q4 | 40,533,624 | $2,426,788,293 | +$86,545,790 | $59.87 | 247 |
| 2020 Q3 | 39,186,894 | $2,353,414,312 | -$89,646,846 | $60.05 | 263 |
| 2020 Q2 | 45,866,533 | $3,568,680,988 | +$406,210,753 | $77.36 | 283 |