CCOI ▼ -3.6% - Cogent Communications Holdings, Inc. $CCOI CCOI - Cogent Communications CEO to Present at Three Upcoming Conferences Cogent Communications declined 3.6% today despite management's scheduled appearances at three upcoming conferences. Conference presentations typically provide opportunities for investor engagement and company updates, though the market reaction suggests investors may have been pricing in different near-term catalysts or broader sector headwinds. 01-SEP-2026 09:31 AM ET