Custom Truck One Source: Recent Share Price Weakness Presents An Opportunity To Buy

Custom Truck One Source delivered a beat-and-raise 2Q26, with revenue increasing 10.2% year over year and adjusted EBITDA rising 25%, leading management to raise full-year EBITDA guidance. The rental equipment business generates 76% of EBITDA and is benefiting from operating leverage, pricing power, and demand for power-grid buildout tied to AI infrastructure. The article maintains a BUY view based on CTOS's defensible rental-market position and favorable end-market demand.

Analysis

CTOS’s earnings mix makes the key debate less about one-quarter revenue momentum and more about whether fleet utilization and rental-rate realization can remain elevated as utility transmission, distribution and data-center interconnection projects move from planning to field work. Rental-heavy models create convex EBITDA when utilization rises because depot, maintenance and fleet-overhead costs are largely fixed; the reverse is also true if project permitting or utility capex slips. The market may be underappreciating that constrained availability of specialized utility equipment can preserve pricing even if broader construction equipment demand cools.

The second-order beneficiary is CTOS’s used-equipment channel: sustained rental demand supports residual values, reducing the economic depreciation burden and improving returns on fleet capital. The principal risk is balance-sheet rather than end-demand: fleet expansion requires financing, so higher borrowing costs, weaker residual values, or a utilization decline can rapidly pressure free cash flow despite reported EBITDA growth. Watch net leverage, interest expense, rental utilization, and fleet capex-to-revenue rather than EBITDA alone over the next two quarters.

Near-term, the beat-and-raise can support estimate revisions, but upside beyond 1-3 months requires evidence that utility and data-center customers are converting backlog into equipment days rather than merely reserving capacity. Over 6-18 months, CTOS is positioned to gain share from smaller independent rental operators that cannot fund specialized fleet or meet national-account service requirements. A meaningful slowdown in regulated utility capex, data-center power interconnection delays, or a sharp deterioration in used-truck auction values would falsify the thesis.

Key Decisions for Investors

• Initiate or add to CTOS on post-earnings consolidation rather than chase a gap higher; underwrite a 6-12 month long only if the next report confirms stable-to-rising rental utilization and no material deterioration in fleet residual values. Target 2:1 upside/downside using a stop or reassessment trigger if utilization declines materially for two consecutive quarters.
• Use a relative-value expression: long CTOS versus short United Rentals (URI) or an equal-weight construction-equipment basket over 3-6 months. The thesis is that CTOS has greater exposure to specialized utility-grid equipment, while URI carries more broad commercial-construction sensitivity; exit if utility-related rental pricing ceases to outperform general rental rates.
• Set an alert around the next earnings release for net leverage and interest-cost guidance. If incremental fleet purchases are being funded without corresponding utilization gains, reduce exposure even if EBITDA guidance is maintained, as free-cash-flow conversion and valuation multiple are then at risk.
• Do not add an AI-infrastructure premium to CTOS valuation until management quantifies data-center/grid-related revenue, backlog, or fleet deployment. Treat verified utility capex awards and transmission-project mobilizations as catalysts rather than company narrative alone.