TeraWulf Shares Climb 4.86% After Signing $19B AI Data Center Leasing Deal With Anthropic

Bitcoin miner-turned data center operator TeraWulf (WULF) jumped after announcing a $19 billion agreement with Anthropic to lease AI data center capacity. Shares rose 4.86% in the regular session to close at $22.21. TeraWulf started as a pure-play Bitcoin miner, running large facilities filled with specialized machines that generate newly issued bitcoin. That model has faced mounting pressure since last year's halving reduced block rewards by 50%, squeezing profitability. Like other miners pivoting toward artificial intelligence, TeraWulf is increasingly repurposing its power capacity and data center footprint to host AI computing infrastructure. Management and investors view long-term contracts with major tenants as a way to build steadier revenue than the volatile economics of mining. The company said it continues to operate its Bitcoin mining business, but the Anthropic contract and a growing portfolio of similar agreements are becoming a bigger driver of valuation. The company also disclosed it will sell its 50.1% stake in Abernathy, a Texas-based data center joint venture. A buyer group led by partner Fluidstack valued the stake at about $530 million. TeraWulf expects to monetize roughly $450 million of invested capital at a premium, freeing capital to expand data centers it owns outright. The move aligns with an industry-wide shift analysts have tracked throughout the year. As of March 2026, Bitcoin miners had sold more than 15,000 BTC from peak holdings and signed AI computing contracts totaling over $70 billion as they seek more stable margins in the AI sector. The rotation has also mirrored a broader flow of capital toward artificial intelligence that, during the weaker first half of the year, drew attention and liquidity away from crypto. TeraWulf's rally came on a softer backdrop for Bitcoin. BTC fell to $61,900 yesterday before rebounding to $63,300 today. Additional pressure followed a disclosure from Strategy, which reported selling 3,588 bitcoins for $216 million, sharply higher than the 32 coins it sold a few weeks earlier.