Alliance Resource Partners LP (NASDAQ: ARLP) saw its stock price plummet 5.84% in pre-market trading on Monday following the release of its second-quarter financial results. The coal mining company reported earnings and revenue that fell short of analyst expectations, disappointing investors and triggering a sell-off.

ARLP reported Q2 earnings per share (EPS) of $0.46, missing the analyst consensus estimate of $0.62 by 26.16%. This represents a significant 40.26% decrease from the $0.77 per share earned in the same period last year. The company's quarterly revenue also disappointed, coming in at $547.5 million, which fell short of the expected $578.47 million by 5.35%. This marks a 7.73% decrease from the $593.35 million in sales reported for the same quarter in the previous year.

The decline in financial performance can be attributed to several factors. Alliance Resource Partners experienced an 11.3% reduction in coal sales prices, which significantly impacted its top line despite a 6.8% increase in coal sales volumes. The company also reported a $25.0 million non-cash impairment loss on a preferred equity investment in a battery materials company, further affecting its bottom line. Despite these challenges, ARLP declared a quarterly cash distribution of $0.60 per unit, payable on August 14, 2025, to unitholders of record as of August 7, 2025. The company ended the quarter with a total liquidity of $499.2 million, including $55.0 million in cash and cash equivalents, and held 542 bitcoins valued at $58.0 million as of June 30, 2025.