Bitcoin miners, AI stocks jump after hedge-fund liquidation

Shares of companies that operate bitcoin mining and AI or high-performance computing assets posted double-digit gains in U.S. trading on July 30, 2026. Keel Infrastructure Corp., the company formerly known as Bitfarms, led the group with a 29.13% rise to $4.10 by 2 p.m. EDT. Nebius Group N.V. climbed 28.52% to $190.50, Cipher Digital Inc. added 28.30%, and IREN Limited rose 27.36% to $37.33. Riot Platforms, Coreweave, Hut 8, Bitdeer Technologies and other miners traded higher, with many names up in the high teens to low 20s.

The intraday gains followed the liquidation of public holdings by a hedge fund founded by a former OpenAI researcher. Citadel purchased most of that portfolio in a sizable transaction. Bitcoin traded above $64,000 during the session, including near $65,000, while the large block trade removed the specific public positions tied to the liquidated fund.

Microsoft reported quarterly results showing its AI spending beginning to deliver returns; the company’s shares rose on the day. Coreweave disclosed a collaboration with Leidos to provide AI cloud services for the U.S. Intelligence Community and the Department of Defense. The partnership would place Coreweave’s platform in classified facilities with Leidos handling security accreditation and mission integration; no contract value was disclosed and the agreement is subject to definitive documents.

Several companies disclosed or highlighted deals tied to AI data centers and long-term leases. Hut 8 signed a second 15-year lease at its Beacon Point campus in Texas with a stated value of $9.8 billion. IREN reported about $2.8 billion in new AI cloud contracts and raised its 2026 revenue target above $4 billion. Terawulf has a long-term lease with Anthropic, and Keel has advanced a data center project in Quebec. Nebius has increased its power capacity guidance and received investment from Nvidia.

Suppliers and contractors for AI and data centers also rose. Sandisk and Micron are suppliers of memory used in AI clusters, Bloom Energy produces fuel cells used for data center power, Cerebras manufactures AI accelerator chips, and contractors such as EMCOR Group and Babcock & Wilcox provide construction and infrastructure services for buildouts.

Capital spending, grid capacity and the sustainability of long-term demand for AI computing remain open questions for many public miners and infrastructure providers. The sector had experienced sharp gains earlier in the year and steep losses in July before the rally on July 30.