Calumet Specialty Products Partners LP (CLMT) saw its stock plummet 5.50% in pre-market trading on Friday following the release of its second-quarter 2025 financial results. The company reported a significant widening of its net loss and a substantial earnings per share (EPS) miss, overshadowing positive revenue performance.

The specialty hydrocarbon and fuel products company reported a Q2 net loss of $147.9 million, or $1.70 per diluted share, compared to a loss of $39.1 million, or $0.48 per share, in the same period last year. This result fell far short of analyst expectations, with FactSet's consensus estimate projecting a loss of only $0.34 per share. The wider loss came despite Calumet's efforts to reduce costs, having achieved $42 million in year-over-year operating cost savings through the first half of 2025.

On a more positive note, Calumet's Q2 revenue of $1.03 billion surpassed analyst expectations of $925.2 million. The company also reported an increase in Adjusted EBITDA with Tax Attributes to $76.5 million, up from $74.8 million in the previous year. However, these positives were not enough to offset investor concerns about the significant bottom-line deterioration. The pre-market plunge suggests that market participants are focusing on the company's profitability challenges rather than its top-line performance and cost-saving initiatives.