Cummins (CMI) Q2 2026 earnings review
Growth Accelerates on Data Center Boom, but Margins See Minor Compression
Cummins delivered record second-quarter revenues of $9.5 billion, representing a 9% YoY growth that marks a clear acceleration from recent quarters. The Power Systems segment remains the star, soaring 19% on insatiable data center demand. Truck markets also showed early signs of recovery, with NA sales up 8%. However, while sales volumes outperformed, overall EBITDA margin decelerated slightly to 17.5% from 18.4% a year ago, primarily due to higher incentive compensation. Despite the slight margin squeeze, management's outlook is highly confident: full-year guidance was raised for both revenue (+10-13%) and EBITDA (18.0-18.5%), indicating profitability will strongly accelerate in the second half.
🐂 Bull Case
The Power Systems segment grew 19% YoY with an elite 24.5% EBITDA margin. Multi-year macro tailwinds in AI and High-Performance Computing (HPC) are locking in long-term demand for Cummins' power generation solutions.
After a grueling 2025 downturn, North American truck demand is Reversing into growth faster than expected, lifting the Engine and Components segments. A looming EPA 2027 pre-buy cycle provides a clear path for sustained volume.
🐻 Bear Case
Despite a 6% rise in Engine sales and 7% in Components, EBITDA margins in both segments Decelerated year-over-year. Rising variable compensation and input costs are offsetting the leverage gained from higher volumes.
The company continues to face a complex macroeconomic environment. Previous quarters noted a 50 bps full-year headwind from tariffs, and regulatory uncertainty remains high as Cummins delays its medium-duty B-platform to 2028.
⚖️ Verdict: 🟢
Bullish. The top-line recovery is robust and diversified across the two primary growth engines: secular data center demand and cyclical trucking recovery. The slight Q2 margin compression is easily offset by the raised full-year profitability outlook.
Key Themes
Power Systems Capitalizing on AI Data Centers
Power Systems is Accelerating dramatically, posting $2.3B in sales (+19% YoY) and a formidable 24.5% EBITDA margin. The segment is directly benefiting from grid constraints and the AI boom. The newly announced Circe Energy agreement to provide HSK78 and QSK60 natural gas generators for a Texas HPC microgrid (deliveries 2026-2030) proves Cummins is successfully shifting from traditional diesel backup to integrated, primary-power microgrid solutions.
North American Truck Market Reversing to Growth
The cyclical trough appears to be firmly in the rearview mirror. North American revenues grew 8% overall, with the Components segment seeing a 6% NA jump driven by stronger truck demand. This aligns with prior quarter commentary that the heavy- and medium-duty truck cycle is bottoming and pulling forward into early pre-buy phases ahead of the 2027 emissions mandates.
Accelera Loss Reduction Succeeded by Strong Demand
Accelera revenues surged 38% YoY to $145M, driven by stronger eMobility demand. Crucially, the segment EBITDA loss narrowed to $69M (from $100M a year ago). The strategic pivot away from the low-pressure fuel cell business (divested in Q1) is paying dividends, putting the segment on a much clearer path to controlling cash burn.
Negative Operating Leverage in Core Segments
A notable red flag: Engine segment sales grew 6%, but segment EBITDA actually fell from $400M to $386M, compressing the margin from 13.8% to 12.5%. Components saw a similar dynamic (sales +7%, but margin down from 14.7% to 13.2%). Management cited higher incentive compensation tied to expected record full-year results, but this contradicts the positive narrative of volume-driven margin expansion.
EPA 2027 Regulatory Risk and Product Delays
Cummins outlined its Model Year 2027 launch plans for the new X10 and X15 engines, describing a 'measured production ramp' while keeping legacy products available. However, as revealed in Q1, the medium-duty 'B' platform has been delayed to 2028. This fragmented launch schedule across different platforms elevates execution risk and engineering costs going into a critical emissions cycle.
Macro Picture: Persistent Tariff Headwinds
While not heavily emphasized in the current release beyond a nod to a 'complex macroeconomic environment,' historical context shows tariffs have been a persistent 20-50 bps dilutive drag on overall EBITDA percentages. Global operations (like the 40% tariff exposure from German/Japanese production noted historically) require constant price recovery maneuvering that artificially inflates the top line without adding bottom-line dollars.
Other KPIs
Accelerating. Sales increased 9% YoY (NA up 13%, International up 1%), setting a new segment record. The growth was heavily driven by power generation products attached to the data center boom. Margins dropped slightly YoY to 13.6% from 14.6%, likely due to the mix shift towards whole goods (equipment) rather than higher-margin parts, a trend management warned about in previous quarters.
Reversing positively. Cash from operations more than doubled compared to $782 million in the first six months of 2025. This exceptional cash generation easily funded $438 million in CapEx and allowed the return of $501 million to shareholders in Q2 alone through dividends and share repurchases, keeping Cummins on track for its 50% OCF return target.
Guidance
Accelerating. This is a massive upgrade from the prior guidance of +8% to +11%, and a stark contrast to FY25's -1% contraction. The raise is explicitly tied to stronger demand across North American on-highway, China construction, and global power generation.
Accelerating. Raised from the prior 17.75% - 18.5% range. Crucially, because Q1 reported 15.4% and Q2 reported 17.5%, hitting an 18.0%+ full-year average mathematically requires a significant step-up in profitability (likely 19%+) in the second half of the year. Management explicitly stated that H2 margins will be higher than H1.
Key Questions
H2 Margin Bridge
Your raised FY26 EBITDA guidance implies a substantial step-up in H2 margins. Given that Engine and Components segments experienced YoY margin compression in Q2 due to incentive comp, what specific levers (pricing, volume leverage, or cost reduction) give you confidence in the H2 margin expansion?
EPA 2027 Pre-buy Cadence
With the NA truck market recovering faster than expected, are you seeing customers actively pulling forward orders into late 2026 to avoid the EPA 2027 engine cost increases, or is this primarily organic replacement demand?
Data Center Capacity and Mix
The Circe Energy agreement highlights a shift toward natural gas prime power microgrids. How does the margin profile and manufacturing capacity constraint for large natural gas units compare to your traditional diesel backup business?