Cogent Communications Holdings, Inc.
US ˙ NasdaqGS ˙ US19239V3024

SecurityCCOI / Cogent Communications Holdings, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership497,195 shares
Latest Disclosed Value $ 9,367,154
Northern Trust Corp reports 0.36% decrease in ownership of CCOI / Cogent Communications Holdings, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 497,195 shares of Cogent Communications Holdings, Inc. (US:CCOI) valued at $9,367,154 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 498,973 shares of Cogent Communications Holdings, Inc.. This represents a change in shares of -0.36% during the quarter. The current value of the position is $8,596,502 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F COGENT COMM HOLDINGS COM NEW 19239V302 497,195 -1,778 -0.36 9,367 -12.92 0.0012
2026-02-17 2025-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 498,973 -6,306 -1.25 10,758 -44.49 0.0014
2025-11-14 2025-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 505,279 -13,965 -2.69 19,377 -22.59 0.0025
2025-08-13 2025-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 519,244 -6,580 -1.25 25,033 -22.35 0.0034
2025-05-13 2025-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 525,824 -5,262 -0.99 32,238 -21.24 0.0048
2025-02-14 2024-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 531,086 -12,292 -2.26 40,931 -0.78 0.0058
2024-11-13 2024-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 543,378 -8,804 -1.59 41,253 32.37 0.0068
2024-08-14 2024-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 552,182 -21,264 -3.71 31,165 -16.81 0.0053
2024-05-14 2024-03-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 573,446 7,767 1.37 37,463 -12.93 0.0065
2024-02-13 2023-12-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 565,679 19,841 3.63 43,026 27.34 0.0078
2023-11-13 2023-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 545,838 7,746 1.44 33,787 -6.69 0.0065
2023-08-11 2023-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 538,092 23,165 4.50 36,208 10.35 0.0070
2023-05-15 2023-03-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 514,927 7,286 1.44 32,811 13.24 0.0065
2023-02-13 2022-12-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 507,641 21,728 4.47 28,976 14.32 0.0061
2022-11-14 2022-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 485,913 -672 -0.14 25,346 -14.27 0.0058
2022-08-12 2022-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 486,585 -11,106 -2.23 29,566 -10.46 0.0063
2022-05-13 2022-03-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 497,691 -19,953 -3.85 33,021 -12.83 0.0058
2022-02-08 2021-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 517,644 -9,503 -1.80 37,882 1.44 0.0062
2021-11-15 2021-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 527,147 -8,256 -1.54 37,343 -9.29 0.0066
2021-08-13 2021-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 535,403 -8,571 -1.58 41,167 10.06 0.0073
2021-05-12 2021-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 543,974 -11,957 -2.15 37,404 12.38 0.0070
2021-02-11 2020-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 555,931 -11,224 -1.98 33,283 -2.27 0.0065
2020-11-16 2020-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 567,155 -30,820 -5.15 34,057 -26.38 0.0075
2020-08-14 2020-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 597,975 -1,164 -0.19 46,259 -5.81 0.0110
2020-05-14 2020-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 599,139 8,344 1.41 49,111 26.31 0.0141
2020-02-14 2019-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 590,795 -16,793 -2.76 38,880 16.14 0.0087
2019-11-13 2019-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 607,588 11,836 1.99 33,478 -5.34 0.0080
2019-08-13 2019-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 595,752 -3,207 -0.54 35,365 8.84 0.0084
2019-05-13 2019-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 598,959 9,575 1.62 32,493 21.94 0.0080
2019-02-12 2018-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 589,384 -9,293 -1.55 26,647 -20.23 0.0075
2018-11-14 2018-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 598,677 13,947 2.39 33,406 6.98 0.0082
2018-09-18 2018-06-30 13F/A-1 COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 584,730 13,038 2.28 31,225 25.85 0.0079
2018-08-14 2018-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 587,612 15,920 31,379
2018-05-09 2018-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 571,692 1,823 0.32 24,812 -3.89 0.0065
2018-02-14 2017-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 569,869 -8,138 -1.41 25,815 -8.67 0.0065
2017-11-13 2017-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 578,007 -20,451 -3.42 28,265 17.79 0.0074
2017-08-11 2017-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 598,458 17,136 2.95 23,997 -4.11 0.0067
2017-05-12 2017-03-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 581,322 2,146 0.37 25,025 4.49 0.0072
2017-02-13 2016-12-31 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 579,176 -56,241 -8.85 23,949 2.39 0.0073
2016-11-09 2016-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 635,417 9,987 1.60 23,389 -6.65 0.0073
2016-08-12 2016-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 625,430 -28,541 -4.36 25,054 2.09 0.0081
2016-08-19 2016-03-31 13F/A-1 COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 653,971 11,038 1.72 24,541 10.03 0.0081
2016-05-13 2016-03-31 13F Cogent Comm Group In COMM 19239V302 653,969 25,524
2016-02-12 2015-12-31 13F Cogent Comm Group In COMM 19239V302 642,933 10,204 1.61 22,304 29.79 0.0074
2015-11-12 2015-09-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 632,729 83,621 15.23 17,185 -7.52 0.0057
2015-08-13 2015-06-30 13F COGENT COMMUNICATIONS HLDGS COM 19239V302 549,108 -165,152 -23.12 18,583 -26.36 0.0126
2015-08-13 2015-06-30 13F Cogent Comm Group In COMM 019239V30 83,521 -630,739 2,826 0.0019
2015-05-14 2015-03-31 13F Cogent Comm Group In COMM 19239V302 714,260 77,058 12.09 25,234 11.90 0.0076
2015-02-12 2014-12-31 13F Cogent Comm Group In COM 19239V302 637,202 49,789 8.48 22,551 14.22 0.0068
2014-11-13 2014-09-30 13F Cogent Comm Group In COMM 19239V302 587,413 -20,704 -3.40 19,744 -6.03 0.0062
2014-08-14 2014-06-30 13F COGENT COMMUNICATIONS HLDGS com 19239V302 608,117 -69,472 -10.25 21,011 -12.72 0.0065
2014-05-14 2014-03-31 13F COGENT COMM GROUP COMM 19239V302 677,589 -23,847 -3.40 24,074 -15.07 0.0076
2014-02-21 2013-12-31 13F/A-1 COGENT COMM GROUP COM 19239V302 701,436 -19,967 -2.77 28,346 21.84 0.0091
2014-02-12 2013-12-31 13F COGENT COMM GROUP COM 19239V302 701,436 28,346
2013-11-13 2013-09-30 13F COGENT COMM GROUP COM 19239V302 721,403 -22,376 -3.01 23,265 11.12 0.0082
2013-08-09 2013-06-30 13F COGENT COMM GROUP COM 19239V302 743,779 743,779 20,937 0.0076
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.