Cipher Mining Stock Soars After Signing $5.5 Billion AI Lease with AWS

Cipher Mining Inc. stock soared 18% Monday after the company announced a significant $5.5 billion, 15-year lease agreement with Amazon Web Services to provide turnkey space and power for AI workloads.

The agreement will see Cipher deliver 300 megawatts of capacity in 2026, including both air and liquid cooling capabilities. The capacity will be delivered in two phases, expected to begin in July 2026 and complete in the fourth quarter of 2026, with rent commencing in August 2026.

In addition to the AWS deal, Cipher announced the formation of a joint entity to develop a 1-gigawatt site, named "Colchis," in West Texas. Under the agreement, Cipher is expected to provide the majority of the financing, resulting in approximately 95% equity ownership.

The company also highlighted its previously executed 10-year AI hosting agreement with Fluidstack and Google. Together with the new AWS lease, these AI hosting contracts represent approximately $8.5 billion in lease payments.

For the third quarter of 2025, Cipher reported a net loss of $3 million, or $0.01 per share, and adjusted earnings of $41 million, or $0.10 per diluted share.

The company has successfully completed a $1.3 billion convertible note offering and maintains a pipeline of 3.2 gigawatts of site capacity, positioning itself to capitalize on growing demand for AI infrastructure.