Shares of two major U.S.-listed Bitcoin mining companies, CleanSpark (CLSK) and Iris Energy (IREN), experienced significant double-digit declines following the release of quarterly earnings reports that failed to meet analyst expectations. The sharp sell-off reflects growing investor scrutiny over operational efficiency and profitability in the new post-Halving environment.
CleanSpark, which had been a strong market performer earlier in the year, reported second-quarter revenue of $41.6 million, falling short of the consensus estimate of approximately $43.9 million. Crucially, the company posted an earnings-per-share (EPS) loss of $0.06, contrasting sharply with analyst hopes for a small profit. Investors reacted negatively to the higher-than-expected operating expenses and slower revenue momentum, sending the stock tumbling.
Similarly, Australia-based Iris Energy experienced a harsh market correction after announcing its fiscal third-quarter results. IREN reported revenue of $42.2 million, missing the consensus forecast of $43.5 million. While the company highlighted its ongoing commitment to rapid expansion and optimization of its power infrastructure, the revenue miss, combined with concerns over increased capital expenditure efficiency, led to a substantial drop in its stock price.
These disappointing results come at a crucial time for the mining sector. The recent Bitcoin Halving, which cut the block rewards in half, has intensified pressure on miners to maximize output while aggressively managing costs. The market is now clearly prioritizing miners demonstrating strong forward guidance, low production costs, and immediate profitability. The lukewarm earnings from both CLSK and IREN suggest that while infrastructure expansion is underway, converting hashing power into consistent, profitable revenue streams remains a significant challenge.
Source: Bitcoin miners IREN, CleanSpark shares plunge as earnings fall short



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