Cogent Communications Holdings,

Historical 13F Holders

Symbol
CCOI
CUSIP
19239V302
All holders as of
Q2 2026
Type
Equity
Class
COM NEW
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 19239V302 since 12/18/2024, newest first.

Filer % of Class Filed
BlackRock, Inc. 13G/A Amendment 18 7.7% 10/5/2026
Event 9/30/2026
State Street Corp 13G 5.5% 8/7/2026
Event 6/30/2026
Vanguard Portfolio Management LLC 13G/A Amendment 1 4.9% 7/31/2026
Event 6/30/2026
Park West Asset Management LLC 13G/A Amendment 1
5.6% 6/17/2026
Event 6/10/2026
Park West Asset Management LLC 13G
5.1% 5/22/2026
Event 5/15/2026
Vanguard Portfolio Management LLC 13G 5.6% 4/29/2026
Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 17 0% 3/26/2026
Event 3/13/2026
Turtle Creek Asset Management Inc. 13G/A Amendment 2 8.2% 2/17/2026
Event 12/31/2025
BlackRock, Inc. 13G/A Amendment 17 14.4% 1/23/2026
Event 12/31/2025
Turtle Creek Asset Management Inc. 13G/A Amendment 1 9.4% 11/14/2025
Event 9/30/2025
Turtle Creek Asset Management Inc. 13G 5.7% 8/14/2025
Event 6/30/2025
BlackRock, Inc. 13G/A Amendment 16 13.0% 7/18/2025
Event 6/30/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 11 88.3 k $731 k
2026 Q2 240 48.0 M $710 M
2026 Q1 259 48.8 M $919 M
2025 Q4 275 48.9 M $1.05 B
2025 Q3 295 51.3 M $1.97 B
2025 Q2 318 48.9 M $2.36 B
2025 Q1 337 46.3 M $2.84 B
2024 Q4 336 46.5 M $3.58 B
2024 Q3 346 46.8 M $3.55 B
2024 Q2 332 47.0 M $2.65 B
2024 Q1 332 46.3 M $3.02 B
2023 Q4 328 45.1 M $3.42 B
2023 Q3 326 42.2 M $2.61 B
2023 Q2 302 42.9 M $2.88 B
2023 Q1 287 41.9 M $2.67 B
2022 Q4 299 43.0 M $2.46 B
2022 Q3 276 41.3 M $2.16 B
2022 Q2 274 41.7 M $2.53 B
2022 Q1 289 42.1 M $2.79 B
2021 Q4 300 41.3 M $3.03 B
2021 Q3 272 41.2 M $2.92 B
2021 Q2 270 40.5 M $3.11 B
2021 Q1 269 40.9 M $2.82 B
2020 Q4 277 41.6 M $2.50 B
2020 Q3 289 39.3 M $2.36 B
2020 Q2 313 46.3 M $3.60 B
2020 Q1 298 41.1 M $3.37 B
2019 Q4 269 41.6 M $2.74 B
2019 Q3 261 40.4 M $2.23 B
2019 Q2 250 41.7 M $2.48 B
2019 Q1 242 42.2 M $2.29 B
2018 Q4 235 42.5 M $1.92 B
2018 Q3 235 44.0 M $2.45 B
2018 Q2 217 42.5 M $2.27 B
2018 Q1 213 43.3 M $1.88 B
2017 Q4 224 44.2 M $2.00 B
2017 Q3 197 44.4 M $2.17 B
2017 Q2 198 43.4 M $1.78 B
2017 Q1 207 43.5 M $1.87 B
2016 Q4 212 44.0 M $1.82 B
2016 Q3 201 44.3 M $1.63 B
2016 Q2 203 45.0 M $1.80 B
2016 Q1 194 47.4 M $1.85 B
2015 Q4 183 49.0 M $1.70 B
2015 Q3 162 45.5 M $1.24 B
2015 Q2 167 44.4 M $1.50 B
2015 Q1 164 43.8 M $1.55 B
2014 Q4 156 43.9 M $1.55 B
2014 Q3 154 42.9 M $1.44 B
2014 Q2 173 41.5 M $1.43 B
2014 Q1 157 41.6 M $1.50 B