CoreWeave retained SemiAnalysis’ top-tier Platinum ClusterMAX rating for a third consecutive evaluation cycle, while its shares closed at $86.90 after rising 0.16% and moved higher in premarket trading. The ClusterMAX 3.0 report, released on September 23, 2026, assessed 323 providers, included more than 200 end-user interviews and gave 77 providers in-depth evaluations. CoreWeave remained the only provider to have achieved Platinum status across all three assessments, although Nebius joined it in the top tier during the latest cycle. ClusterMAX measures real-world enterprise GPU cloud performance across categories including reliability, security, orchestration, storage and networking. CoreWeave recorded 96% goodput against an industry average of about 90%, and its infrastructure systems are designed to identify hardware issues, test available resources and improve recovery processes. The company operates more than 10,000 H100 clusters and is expanding high-performance cloud services for demanding artificial intelligence and enterprise workloads globally. OpenAI, Jane Street and NVIDIA are among its notable users.