Custom Truck One Source Inc (CTOS) stock is soaring 15.19% in pre-market trading on Thursday, following the release of its impressive second quarter 2025 financial results. The company reported a significant 20.9% surge in revenue and a 14.9% increase in gross profit, demonstrating robust growth across its business segments.

The equipment rental and sales company's financial performance showed marked improvement, with Adjusted EBITDA reaching $93.428 million, up from $80.056 million in the previous period. This substantial increase in profitability has likely fueled investor enthusiasm, driving the stock's sharp rise.

Custom Truck One Source's strong performance was evident across its three primary segments: Equipment Rental Solutions (ERS), Truck and Equipment Sales (TES), and Aftermarket Parts and Services (APS). The company's core rental business, part of the ERS segment, continued to be a strong contributor to overall results. While the company faces potential challenges such as rising labor costs and industry competition, the current financial results appear to have overshadowed these concerns in investors' minds, leading to the significant stock price increase.