Key Takeaways Lumen is repositioning as an AI network provider, securing $13B in Private Connectivity Fabric deals.LUMN reduced debt by over $5B and cut interest costs, supporting EBITDA growth outlook for 2026.Cogent is growing on-net and IPv4 revenues but faces margin expansion moderation and declining Sprint sales.Lumen Technologies, Inc. (LUMN) and Cogent Communications Holdings, Inc. (CCOI) are both enterprise-focused fiber network providers that deliver high-capacity, long-haul fiber networks powering ...