Honeywell

Most people still think of Honeywell as a thermostat company. What they actually have is a $38.5B revenue business spanning aerospace avionics, building automation software, industrial process control, and advanced materials. All this, coupled with a recurring revenue mix that’s been quietly growing for a decade.

Honeywell operates 4 segments

• Aerospace Technologies: Avionics, engines, cockpit systems for commercial and defence.
• Industrial Automation: Process controls, sensors, safety systems
• Building Automation: Smart HVAC, fire safety, security systems
• Energy & Sustainability Solutions: Refining tech, advanced materials, LNG systems.

All these revenue streams generate over $37B annually. The aerospace segment carries the highest margins, running around 26%, which is driven by aftermarket parts and services with strong pricing power. Once an airline is flying Honeywell avionics, switching costs are severe. Recertification, retraining, rebuilding maintenance protocols. The installed base is sticky for decades.

Growth catalysts

Commercial aviation aftermarket demand continues to recover, with commercial aviation posting double-digit organic growth for multiple consecutive quarters. Building automation is being driven by EU regulations mandating smart HVAC systems in commercial properties. Defense and space grew 19% in the most recent reported quarter on sustained geopolitical demand.

The risk to watch

Honeywell recently announced it would split into three separate, focused companies. That restructuring creates execution risk in the near term, transitions of this size are complex, and management attention gets divided. The China exposure in aerospace (domestic alternatives emerging via COMAC) is an additional long-term risk worth monitoring.

Financials

2025 revenue of ~$37.4B. Full-year operating margin around 22%. The company has been a consistent free cash flow generator in the $5–6B range annually. Honeywell’s Debt/Equity stood at 2.2 (or 220%) for Q4 2025, up sharply from 2.08 in Q3 due to acquisitions like Sundyne funding. This exceeds the 5-year average (~1.55 for FY2024), signalling higher leverage but supported by strong cash flows. ROA for fiscal 2025 was 6.36% overall, with Q4 at 6.16%, down from prior-year peaks due to asset impairments and flat total assets (~$75B). This trails the 5-year average of 7.68%, reflecting efficiency pressures in Industrial Automation. Full company financials are available on the official Honeywell website.

2025 adjusted EPS reached $9.78 (GAAP ~$6.94 after impairments). Q1 2026 adjusted EPS was $2.45 (beating $2.31 consensus); Q4 2025 was $2.59. Trailing P/E ratio is approximately 26.5-27.5 as of April 2026, up from 25.4 at end-2025, reflecting market premium on growth outlook post-Aerospace spin. Forward P/E aligns with 2026 EPS guidance of $10.35-10.65.

Honeywell is a genuinely complex story right now. The underlying businesses are high quality. The aerospace segment alone justifies significant attention, but the three-way split changes the investment thesis. You’re no longer buying one company, you’re betting on three restructured entities executing cleanly. Worth watching closely as the separation becomes clearer. Not a simple buy-and-ignore.