SAN DIEGO, Dec. 24, 2025 (GLOBE NEWSWIRE) -- The law firm of Robbins Geller Rudman & Dowd LLP is investigating potential violations of U.S. federal securities laws involving Cogent Communications Holdings, Inc. (NASDAQ: CCOI) focused on whether Cogent Communications and certain of its top executives made false and/or misleading statements and/or failed to disclose material information to investors. If you have information that could assist in the Cogent Communications investigation or if you are a Cogent Co ...