Latest Period
Q1 2026
Security Snapshot
COGENT COMMUNICATIONS HOLDINGS, INC. - COMMON STOCK, PAR VALUE $0.001 PER SHARE (CCOI) Institutional Ownership
CUSIP: 19239V302
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
230
Shares (Excl. Options)
48,814,238
Price
$18.84
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- Security type / class
- Equity / COMMON STOCK, PAR VALUE $0.001 PER SHARE
- Symbol
- CCOI on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 48,814,238
- Total 13F value
- $919,117,574
- Portfolio coverage rank
- 0.01%
- Share change
- +1,040,281
- Value change
- +$12,833,852
- Number of holders
- 230
- Shares outstanding
- 50,113,196
- SEC-reported price per share
- $17.22
- Insider filing price
- $17.22
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, PAR VALUE $0.001 PER SHARE is tracked under CUSIP 19239V302.
- 230 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 245 to 230 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $1,052,942,254 to $919,117,574.
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 230 institutions filings for Q1 2026.
Security key
19239V302
Latest holder period
Q1 2026
13F holders
230
13D/G owners
4
CIK / CUSIP context first
Open Q1 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
4
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 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.6% | $52,585,115 | 2,791,142 | Vanguard Portfolio Management | 31 Mar 2026 |
As of 31 Mar 2026, 230 institutional investors reported holding 48,814,238 shares of COGENT COMMUNICATIONS HOLDINGS, INC. - COMMON STOCK, PAR VALUE $0.001 PER SHARE (CCOI). This represents 97% of the company’s total 50,113,196 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
76%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | 7,075,372 | -1.6% | 0% | $133,300,018 |
| TURTLE CREEK ASSET MANAGEMENT INC. | 8.7% | 4,348,897 | +7.7% | 3.1% | $81,933,219 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.5% | 2,748,759 | 0% | 0% | $51,786,620 |
| EdgePoint Investment Group Inc. | 4.6% | 2,283,378 | 0% | 0.34% | $43,018,842 |
| STATE STREET CORP | 4.5% | 2,273,265 | +9.8% | 0% | $42,828,313 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 2,120,531 | 0% | 0% | $39,950,804 |
| Park West Asset Management LLC | 3.9% | 1,935,201 | +37% | 3.2% | $36,459,187 |
| MORGAN STANLEY | 3.8% | 1,883,072 | +50% | 0% | $35,477,106 |
| Newtyn Management, LLC | 3.2% | 1,600,000 | +14% | 3.2% | $30,144,000 |
| MAGNOLIA GROUP, LLC | 2.6% | 1,290,204 | +3.5% | 4.5% | $24,307,443 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 1,205,635 | +2.2% | 0% | $22,718,512 |
| DigitalBridge Group, Inc. | 2.3% | 1,142,952 | +80% | 1.4% | $21,533,215 |
| Harspring Capital Management, LLC | 2.2% | 1,087,000 | -22% | 11% | $20,479,080 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.5% | 760,117 | +14% | 0% | $14,320,604 |
| D. E. Shaw & Co., Inc. | 1.5% | 738,815 | +164% | 0.01% | $13,919,274 |
| GOLDMAN SACHS GROUP INC | 1.4% | 712,934 | +16% | 0% | $13,431,671 |
| Oakum Bay Capital LLC | 1.4% | 690,374 | +27% | 7% | $13,006,646 |
| Broad Run Investment Management, LLC | 1.3% | 663,200 | -0.08% | 2.2% | $12,494,688 |
| FMR LLC | 1.2% | 588,788 | -28% | 0% | $11,092,775 |
| HRT FINANCIAL LP | 1% | 509,095 | +935% | 0.02% | $9,591,000 |
| BlackBarn Capital Partners LP | 1% | 500,000 | -23% | 2.8% | $9,420,000 |
| GILDER GAGNON HOWE & CO LLC | 1% | 499,290 | +1% | 0.11% | $9,406,624 |
| NORTHERN TRUST CORP | 0.99% | 497,195 | -0.36% | 0% | $9,367,154 |
| CenterBook Partners LP | 0.99% | 494,283 | -18% | 0.5% | $9,312,292 |
| JPMORGAN CHASE & CO | 0.98% | 492,468 | +192% | 0% | $8,598,491 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 48,814,238 | $919,117,574 | +$12,833,852 | $18.84 | 230 |
| 2025 Q4 | 48,834,779 | $1,052,942,254 | -$138,869,300 | $21.56 | 245 |
| 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 |
| 2020 Q1 | 40,892,162 | $3,353,973,078 | +$14,639,372 | $81.97 | 277 |