COGENT COMM HOLDINGS INC — institutional ownership

3 funds reported holding COGENT COMM HOLDINGS INC in their latest 13F filings, worth $3.05M in total (CUSIP 19239V902).

Largest holders

1. IMC-Chicago, LLC — $2.34M
2. GROUP ONE TRADING LLC — $611K
3. SIMPLEX TRADING, LLC — $108K