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Shares of bitcoin-mining and AI-infrastructure-adjacent companies TeraWulf, Applied Digital, and IREN fell on Thursday amid apparent profit-taking, with TeraWulf dropping 4% after a roughly 44% year-to-date run, while Applied Digital and IREN also declined. The pullback follows a period of strong gains for the group, which has benefited from investor enthusiasm around both crypto mining and data-center capacity tied to AI demand. The declines highlight the volatility of these smaller, speculative names as investors reassess valuations following extended rallies.