Cogent Communications Holdings, Inc.
US ˙ NasdaqGS ˙ US19239V3024

SecurityCCOI / Cogent Communications Holdings, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership2,273,265 shares
Latest Disclosed Value $ 42,828,313
State Street Corp reports 9.81% increase in ownership of CCOI / Cogent Communications Holdings, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 2,273,265 shares of Cogent Communications Holdings, Inc. (US:CCOI) valued at $42,828,313 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,070,132 shares of Cogent Communications Holdings, Inc.. This represents a change in shares of 9.81% during the quarter. The current value of the position is $39,304,752 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)
2026-05-15 2026-03-31 13F COGENT COMM HOLDINGS COM NEW 19239V302 2,273,265 203,133 9.81 42,828 -4.04 0.0015
2026-02-13 2025-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 2,070,132 132,454 6.84 44,632 -39.94 0.0015
2025-11-14 2025-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,937,678 149,443 8.36 74,310 -13.80 0.0026
2025-08-14 2025-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,788,235 13,510 0.76 86,211 -20.77 0.0032
2025-05-15 2025-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,774,725 -61,744 -3.36 108,808 -23.12 0.0045
2025-02-14 2024-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,836,469 85,659 4.89 141,537 6.48 0.0056
2024-11-14 2024-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,750,810 22,738 1.32 132,921 36.28 0.0054
2024-08-14 2024-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,728,072 -34,013 -1.93 97,532 -16.51 0.0043
2024-05-15 2024-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,762,085 -52,543 -2.90 116,824 -15.36 0.0052
2024-02-14 2023-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,814,628 33,119 1.86 138,021 25.16 0.0067
2023-11-14 2023-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,781,509 9,111 0.51 110,275 -7.54 0.0061
2023-08-14 2023-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,772,398 10,259 0.58 119,265 6.22 0.0063
2023-05-15 2023-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,762,139 -35,709 -1.99 112,283 9.42 0.0063
2023-05-15 2022-12-31 13F/A-99 COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,797,848 52,972 3.04 102,621 12.75 0.0060
2023-05-15 2022-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,797,848 52,972 102,621 0.0060
2022-11-15 2022-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,744,876 -9,499 -0.54 91,013 -14.62 0.0058
2022-08-15 2022-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,754,375 48,110 2.82 106,596 -5.84 0.0064
2022-05-16 2022-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,706,265 210,120 14.04 113,211 3.40 0.0056
2022-02-14 2021-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,496,145 52,995 3.67 109,488 7.10 0.0052
2021-11-15 2021-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,443,150 43,726 3.12 102,233 -4.99 0.0054
2021-08-16 2021-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,399,424 29,672 2.17 107,602 14.25 0.0057
2021-07-09 2021-03-31 13F/A-1 COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,369,752 40,874 3.08 94,184 18.38 0.0054
2021-05-17 2021-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,369,752 40,874 94,184 0.0054
2021-02-16 2020-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,328,878 36,463 2.82 79,560 2.51 0.0049
2020-11-10 2020-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,292,415 -43,874 -3.28 77,610 -24.92 0.0053
2020-08-14 2020-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,336,289 10,063 0.76 103,375 -4.91 0.0075
2020-06-19 2020-03-31 13F/A-1 COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,326,226 80,921 6.50 108,711 32.65 0.0095
2020-05-11 2020-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,326,226 80,921 108,711 9,547.0147
2020-02-06 2019-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,245,305 -18,461 -1.46 81,954 17.69 0.0056
2019-11-14 2019-09-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,263,766 -506 -0.04 69,634 -7.21 0.0052
2019-08-14 2019-06-30 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,264,272 14,157 1.13 75,047 10.66 0.0056
2019-05-15 2019-03-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,250,115 43,532 3.61 67,819 24.32 0.0053
2019-02-12 2018-12-31 13F COGENT COMMUNICATIONS HLDGS COM NEW 19239V302 1,206,583 -45,443 -3.63 54,550 -21.92 0.0050
2018-11-09 2018-09-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,252,026 50,778 4.23 69,868 8.92 0.0054
2018-08-14 2018-06-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,201,248 68,661 6.06 64,145 30.50 0.0054
2018-05-15 2018-03-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,132,587 51,680 4.78 49,152 0.39 0.0042
2018-02-14 2017-12-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,080,907 29,349 2.79 48,962 -4.79 0.0039
2017-11-14 2017-09-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,051,558 -30,344 -2.80 51,426 18.56 0.0044
2017-08-14 2017-06-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,081,902 53,562 5.21 43,377 -2.01 0.0038
2017-05-15 2017-03-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 1,028,340 81,862 8.65 44,268 13.12 0.0039
2017-02-09 2016-12-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 946,478 62,053 7.02 39,134 20.20 0.0037
2017-01-13 2016-09-30 13F/A-1 COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 884,425 8,371 0.96 32,557 -7.21 0.0033
2016-11-14 2016-09-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 884,425 32,557
2016-08-12 2016-06-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 876,054 -52,881 -5.69 35,088 -3.23 0.0038
2016-05-20 2016-03-31 13F/A-1 COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 928,935 120,267 14.87 36,261 29.27 0.0039
2016-05-12 2016-03-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 928,935 36,261
2016-02-16 2015-12-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 808,668 2,960 0.37 28,051 28.18 0.0031
2015-11-16 2015-09-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 805,708 -17,472 -2.12 21,884 -21.44 0.0025
2015-08-13 2015-06-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 823,180 -20,191 -2.39 27,858 -6.51 0.0030
2015-05-15 2015-03-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 843,371 34,572 4.27 29,799 4.11 0.0031
2015-02-11 2014-12-31 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 808,799 20,958 2.66 28,623 8.09 0.0029
2014-11-12 2014-09-30 13F/A-1 COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 787,841 -29,235 -3.58 26,480 -6.19 0.0028
2014-11-10 2014-09-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 787,841 26,480
2014-08-12 2014-06-30 13F COGENT COMMUNICATIONS HLDGS Common equity shares 19239V302 817,076 -9,755 -1.18 28,228 -3.90 0.0030
2014-05-15 2014-03-31 13F/A-1 COGENT COMMUNICATIONS GRP Common equity shares 19239V302 826,831 3,207 0.39 29,375 -11.73 0.0033
2014-05-13 2014-03-31 13F COGENT COMMUNICATIONS GRP Common equity shares 19239V302 827,297 29,392
2014-02-06 2013-12-31 13F/A-1 COGENT COMMUNICATIONS GRP Common equity shares 19239V302 823,624 -8,713 -1.05 33,280 23.98 0.0037
2014-02-06 2013-12-31 13F COGENT COMMUNICATIONS GRP Common equity shares 19239V302 846,695 19,172
2013-11-12 2013-09-30 13F COGENT COMMUNICATIONS GRP Common equity shares 19239V302 832,337 -8,479 -1.01 26,842 13.41 0.0033
2013-08-08 2013-06-30 13F COGENT COMMUNICATIONS GRP Common equity shares 19239V302 840,816 840,816 23,669 0.0031
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.