COPT Defense Properties (NYSE:CDP) is one of the worst-performing data center stocks in 2025. Its stock’s performance has been lacklustre throughout this year and over the past year (-4%). The company develops and operates secure data centers tailored for national security, intelligence, and cloud computing workloads. Its portfolio is heavily concentrated in mission-critical locations near the Pentagon and intelligence hubs. This tenant base provides it with stable, long-term leases with low vacancy risk, ...