Cummins (CMI) Q4 2025 earnings review
Data Center Boom Salvages a Tough Year
Cummins is living a 'tale of two economies.' While the core North American truck market remains in a recession (driving Engine sales down 4%), the insatiable demand for data center power pushed Power Systems revenue up 11% with record margins. Total revenue returned to growth (+1% YoY) after three quarters of decline. However, the future of the Accelera segment is in question: a $218M charge related to the electrolyzer business crushed GAAP earnings, leading to a strategic retreat. Guidance for FY26 is surprisingly optimistic, projecting 3-8% top-line growth.
🐂 Bull Case
The data center mix shift is structurally improving profitability. Power Systems EBITDA margin hit 21.7% in Q4 (vs 18.0% prior year), significantly higher than the corporate average. This high-margin growth engine is offsetting cyclical weakness elsewhere.
After withdrawing guidance earlier in the year due to uncertainty, management reinstated a constructive outlook for FY26: Revenue up 3-8% and EBITDA margins of 17-18% (vs 16% in FY25). This signals confidence that the truck cycle bottom is near.
🐻 Bear Case
The zero-emissions segment is struggling. CMI took a $218M charge (mostly inventory/impairments) as hydrogen demand 'dried up.' With a segment EBITDA loss of $374M in Q4 alone, this unit remains a massive drag on consolidated earnings.
The legacy business is shrinking. Engine segment sales fell 4% and Components fell 7%. North American truck demand remains the weak link, and without a cyclical recovery here, the data center narrative has to carry the entire company.
⚖️ Verdict: ⚪
Neutral/Positive. The Power Systems performance is elite, masking a recession in the core truck business. The Accelera writedown is painful but necessary to reset expectations. Reinstated guidance suggests the worst of the cyclical downturn is in the rearview mirror.
Key Themes
Power Systems: The Profit Engine
Accelerating. This segment is the undisputed star, driven by data center backup power. Revenue grew 11% YoY to $1.93B, but more importantly, EBITDA margins expanded 370bps to 21.7%. Management explicitly linked North American growth (+15%) to data center markets. This segment is providing the earnings buffer against the truck recession.
Accelera Reality Check
Reversing. The narrative for the hydrogen electrolyzer business has collapsed. CMI recorded $218M in charges (inventory write-downs and impairments) due to 'shifts in hydrogen adoption expectations.' While sales grew 31% to $131M, the cost to generate that revenue is unsustainable, resulting in a $374M EBITDA loss. Management is 'streamlining' operations—corporate speak for scaling back ambitions.
North American Truck Recession
Decelerating. The core Engine and Components segments continue to shrink. Engine sales fell 4% and Components dropped 7%. North American revenues in Components specifically plunged 15%. This is a continuation of the trend seen throughout FY25, driven by lower medium-duty and heavy-duty truck demand. The guidance for FY26 implies a recovery, but Q4 data shows we are still at the trough.
Distribution Segment Stability
Stable/Accelerating. Often overlooked, the Distribution segment grew sales 7% to $3.3B and delivered a robust 15.1% EBITDA margin (up from 13.0% YoY). This segment benefits from the installed base and service needs of the booming data center gensets, providing a high-margin recurring revenue tailwind.
Shareholder Returns Active
Stable. Despite the earnings volatility from charges, CMI returned $1.05B to shareholders in dividends. The company maintained its commitment to returning 50% of operating cash flow, supported by a healthy $3.6B in operating cash flow for the year.
Other KPIs
Strong. Up significantly from $1.49B in FY24 (though FY24 was impacted by the Atmus separation). This cash generation provides the buffer needed to absorb Accelera losses and fund dividends.
Stable. Despite a 7% drop in revenue, margins held relatively flat YoY (vs 13.7% in 24Q4). This indicates effective cost management in the face of significant volume deleverage in North America.
Stable. Down slightly from $356M YoY. CMI is managing OpEx tightly while protecting critical product launches for the 2027 emissions cycle.
Guidance
Accelerating. After a decline of 1% in FY25, management forecasts a return to growth. This implies a combined recovery in the Truck market and continued momentum in Power Systems.
Accelerating. This is a significant step up from the 16.0% achieved in FY25. It suggests that the mix shift toward higher-margin Power Systems and Distribution is structural, and that Accelera losses may narrow or be better contained.
Stable. The effective tax rate is expected to normalize around 24%, slightly lower than the 25.4% seen in FY25.
Key Questions
Accelera End Game
With the 'strategic review' and halt of new commercial activity in electrolyzers, what is the projected burn rate for Accelera in FY26? Are further impairments likely?
Data Center Capacity
Power Systems grew 11% in Q4 vs ~19% in prior quarters. Is this deceleration due to demand cooling or simply hitting production capacity limits?
Truck Market Visibility
FY26 guidance implies a rebound. What specific order trends in North America Heavy Duty give you confidence that the destocking cycle is over?
Tariff Exposure
Previous quarters cited tariff uncertainty. What assumptions regarding trade policy are embedded in the new FY26 guidance range?