COGENT COMMUNICATIONS HLDGS filings

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SEC filings by COGENT COMMUNICATIONS HLDGS (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2010-02-12CHILTON INVESTMENT CO LLCCOGENT COMMUNICATIONS GROUP INC926,2032.1%EDGAR
SC 13G/A2010-02-10PENINSULA INVESTMENT PARTNERS, L.P.COGENT COMMUNICATIONS GROUP INC4,400,0009.9%EDGAR
SC 13G/A2010-02-09COLUMBIA WANGER ASSET MANAGEMENT LPCOGENT COMMUNICATIONS GROUP INC5,300,50011.9%EDGAR
SC 13G2010-01-29BlackRock Inc.COGENT COMMUNICATIONS GROUP INC2,347,2515.3%EDGAR
SC 13G/A2009-12-10FMR LLCCOGENT COMMUNICATIONS GROUP INC4,796,64610.7%EDGAR
SC 13G/A2009-09-10CHILTON INVESTMENT CO LLCCOGENT COMMUNICATIONS GROUP INC2,512,7835.6%EDGAR
SC 13G/A2009-06-17Norges BankCOGENT COMMUNICATIONS GROUP INC2,152,6104.8%EDGAR
SC 13G/A2009-04-09FMR LLCCOGENT COMMUNICATIONS GROUP INC2,405,5565.4%EDGAR
SC 13G/A2009-03-09COLUMBIA WANGER ASSET MANAGEMENT LPCOGENT COMMUNICATIONS GROUP INC5,116,00011.5%EDGAR
SC 13G/A2009-02-17FMR LLCCOGENT COMMUNICATIONS GROUP INC4,948,21111.0%EDGAR
SC 13G/A2009-02-17MORTON HOLDINGS, INC.COGENT COMMUNICATIONS GROUP INC00.0%EDGAR
SC 13G/A2009-02-17MORGAN STANLEYCOGENT COMMUNICATIONS GROUP INC3,522,0607.9%EDGAR
SC 13G/A2009-02-17Norges BankCOGENT COMMUNICATIONS GROUP INC2,194,6914.6%EDGAR
SC 13G/A2009-02-17TREMBLANT CAPITAL GROUPCOGENT COMMUNICATIONS GROUP INC00.0%EDGAR
SC 13G/A2009-02-17SHUMWAY CAPITAL PARTNERS LLCCOGENT COMMUNICATIONS GROUP INC00.0%EDGAR
SC 13G2009-02-17Norges BankCOGENT COMMUNICATIONS GROUP INC2,252,4075.0%EDGAR
SC 13G/A2009-02-13CHILTON INVESTMENT CO LLCCOGENT COMMUNICATIONS GROUP INC5,053,32111.3%EDGAR
SC 13G/A2009-02-12PRICE T ROWE ASSOCIATES INC /MD/COGENT COMMUNICATIONS GROUP INC4,734,80210.6%EDGAR
SC 13G/A2009-02-06COLUMBIA WANGER ASSET MANAGEMENT LPCOGENT COMMUNICATIONS GROUP INC4,360,0009.8%EDGAR
SC 13G2009-01-26PENINSULA INVESTMENT PARTNERS LPCOGENT COMMUNICATIONS GROUP INC4,000,0009.0%EDGAR
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