greeksoup/ stock research
Stock research / United States / CCOI / 13F holders

Cogent Communications Holdings, Inc. 13F holders

Of the 44 funds followed here, 7 reported a position in Cogent Communications Holdings, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Citadel Advisors, 1.6 million shares worth $22.6 million, 0.0% of its reported book. New this quarter: Two Sigma Investments.

FundSharesValueOf its bookChange on the quarterStatusQuarter endedFiling
Citadel Advisors1,628,441$22.6 million0.0%+550,061added30 June 202613F
Geode Capital Management1,245,445$17.3 million0.0%+39,810added30 June 202613F
FMR LLC165,173$2.3 million0.0%-423,615trimmed30 June 202613F
Millennium Management119,138$1.7 million0.0%-109,258trimmed30 June 202613F
Renaissance Technologies49,231$683,3260.0%-17,900trimmed30 June 202613F
Point72 Asset Management29,200$405,2960.0%-119,200trimmed30 June 202613F
Two Sigma Investments21,947$304,6240.0%+21,947new30 June 202613F
Value is what the fund reported.
Read moreChange is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.

Schedule 13D and 13G filed on the name, last twelve months

FiledScheduleWhoHoldingOf the classEvent dateRule or purposeFiling
5 October 202613G/ABlackRock, Inc. and 1 other3.9 million7.7%30 September 2026passive, institutional (13d-1(b))EDGAR
7 August 202613GState Street Corporation and 1 other2.8 million5.5%30 June 2026passive, institutional (13d-1(b))EDGAR
31 July 202613G/AVanguard Portfolio Management and 1 other2.4 million4.8%30 June 2026passive, institutional (13d-1(b))EDGAR
17 June 202613G/APark West Asset Management LLC and 5 others2.8 million5.6%10 June 2026passive, under 20% (13d-1(c))EDGAR
22 May 202613GPark West Asset Management LLC and 3 others2.5 million5.1%15 May 2026passive, under 20% (13d-1(c))EDGAR
29 April 202613GVanguard Portfolio Management and 1 other2.8 million5.6%31 March 2026passive, institutional (13d-1(b))EDGAR
26 March 202613G/AThe Vanguard Group and 1 other00.0%13 March 2026passive, institutional (13d-1(b))EDGAR
17 February 202613G/ATurtle Creek Asset Management Inc. and 1 other4.0 million8.2%31 December 2025passive, institutional (13d-1(b))EDGAR
23 January 202613G/ABlackRock, Inc. and 1 other7.1 million14.4%31 December 2025passive, institutional (13d-1(b))EDGAR
14 November 202513G/ATurtle Creek Asset Management Inc. and 1 other4.6 million9.4%30 September 2025passive, institutional (13d-1(b))EDGAR
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
Read moreAmendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.

Fails to deliver

Settlement dateShares failedPriceFile
14 September 20265$9.33SEC
11 September 2026121,133$9.09SEC
10 September 2026429,870$9.33SEC
9 September 2026180$9.64SEC
8 September 202643$10.05SEC
1 September 20268,885$9.54SEC
31 August 2026458$9.48SEC
27 August 2026116$10.05SEC
26 August 202696$9.88SEC
25 August 202666$9.49SEC
24 August 2026250,732$9.17SEC
21 August 202641,140$10.01SEC
20 August 202624,888$10.37SEC
19 August 2026400$10.13SEC
17 August 20264$11.31SEC
12 August 2026640$10.82SEC
10 August 202615,024$9.92SEC
7 August 202652,705$10.91SEC
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
Read moreLargest in the window: 429,870 on 10 September 2026. A fail is an operational fact about settlement, not a position.

Source

Each fund's 13F-HR on EDGAR, linked per row; positions matched to CCOI by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.

The same record on your computer

GreekSoup is also a free program for your own computer. It reads these same filings for the names you follow, refreshed as they land, with no account. One pasted line installs it.

Install