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Side-by-side financial comparison of Aon plc (AON) and Norfolk Southern (NSC). Click either name above to swap in a different company.
Aon plc is the larger business by last-quarter revenue ($5.0B vs $3.0B, roughly 1.7× Norfolk Southern). Aon plc runs the higher net margin — 24.6% vs 21.7%, a 3.0% gap on every dollar of revenue. On growth, Aon plc posted the faster year-over-year revenue change (6.0% vs -1.7%). Aon plc produced more free cash flow last quarter ($363.0M vs $334.0M). Over the past eight quarters, Aon plc's revenue compounded faster (15.7% CAGR vs -0.5%).
Aon plc is a British-American professional services firm. The company operates two divisions: Risk Capital, which provides brokerage and consulting services for risk management and insurance and reinsurance, and Human Capital, which provides services for health insurance, retirement plans, pension plans, and talent advisory.
The Norfolk Southern Railway is a Class I freight railroad operating in the Eastern United States. Headquartered in Atlanta, the company was formed in 1982 with the merger of the Norfolk and Western Railway and Southern Railway. The company operates 19,420 route miles (31,250 km) in 22 eastern states and the District of Columbia, and has rights in Canada over the Albany to Montreal route of the Canadian Pacific Kansas City.
AON vs NSC — Head-to-Head
Income Statement — Q1 FY2026 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $5.0B | $3.0B |
| Net Profit | $1.2B | $644.0M |
| Gross Margin | — | — |
| Operating Margin | 34.1% | 31.5% |
| Net Margin | 24.6% | 21.7% |
| Revenue YoY | 6.0% | -1.7% |
| Net Profit YoY | 25.6% | -12.1% |
| EPS (diluted) | $5.63 | $2.87 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q1 26 | $5.0B | — | ||
| Q4 25 | $4.3B | $3.0B | ||
| Q3 25 | $4.0B | $3.1B | ||
| Q2 25 | $4.2B | $3.1B | ||
| Q1 25 | $4.7B | $3.0B | ||
| Q4 24 | $4.1B | $3.0B | ||
| Q3 24 | $3.7B | $3.1B | ||
| Q2 24 | $3.8B | $3.0B |
| Q1 26 | $1.2B | — | ||
| Q4 25 | $1.7B | $644.0M | ||
| Q3 25 | $458.0M | $711.0M | ||
| Q2 25 | $579.0M | $768.0M | ||
| Q1 25 | $965.0M | $750.0M | ||
| Q4 24 | $716.0M | $733.0M | ||
| Q3 24 | $343.0M | $1.1B | ||
| Q2 24 | $524.0M | $737.0M |
| Q1 26 | 34.1% | — | ||
| Q4 25 | 28.1% | 31.5% | ||
| Q3 25 | 20.4% | 35.4% | ||
| Q2 25 | 20.7% | 37.8% | ||
| Q1 25 | 30.9% | 38.3% | ||
| Q4 24 | 26.3% | 37.4% | ||
| Q3 24 | 16.7% | 52.3% | ||
| Q2 24 | 17.4% | 37.2% |
| Q1 26 | 24.6% | — | ||
| Q4 25 | 39.4% | 21.7% | ||
| Q3 25 | 11.5% | 22.9% | ||
| Q2 25 | 13.9% | 24.7% | ||
| Q1 25 | 20.4% | 25.1% | ||
| Q4 24 | 17.3% | 24.2% | ||
| Q3 24 | 9.2% | 36.0% | ||
| Q2 24 | 13.9% | 24.2% |
| Q1 26 | $5.63 | — | ||
| Q4 25 | $7.82 | $2.87 | ||
| Q3 25 | $2.11 | $3.16 | ||
| Q2 25 | $2.66 | $3.41 | ||
| Q1 25 | $4.43 | $3.31 | ||
| Q4 24 | $3.11 | $3.24 | ||
| Q3 24 | $1.57 | $4.85 | ||
| Q2 24 | $2.46 | $3.25 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $1.4M | $1.5B |
| Total DebtLower is stronger | $13.5M | $16.5B |
| Stockholders' EquityBook value | $10.0M | $15.5B |
| Total Assets | $51.4M | $45.2B |
| Debt / EquityLower = less leverage | 1.36× | 1.06× |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | $1.4M | — | ||
| Q4 25 | $2.8B | $1.5B | ||
| Q3 25 | $1.3B | $1.4B | ||
| Q2 25 | $1.4B | $1.3B | ||
| Q1 25 | $1.3B | $1.0B | ||
| Q4 24 | $1.3B | $1.6B | ||
| Q3 24 | $1.3B | $975.0M | ||
| Q2 24 | $1.2B | $659.0M |
| Q1 26 | $13.5M | — | ||
| Q4 25 | $15.2B | $16.5B | ||
| Q3 25 | — | $16.5B | ||
| Q2 25 | — | $16.5B | ||
| Q1 25 | — | $16.7B | ||
| Q4 24 | $17.0B | $16.7B | ||
| Q3 24 | — | $16.6B | ||
| Q2 24 | — | $16.9B |
| Q1 26 | $10.0M | — | ||
| Q4 25 | $9.4B | $15.5B | ||
| Q3 25 | $7.9B | $15.1B | ||
| Q2 25 | $7.8B | $14.8B | ||
| Q1 25 | $7.0B | $14.5B | ||
| Q4 24 | $6.1B | $14.3B | ||
| Q3 24 | $6.2B | $13.8B | ||
| Q2 24 | $5.9B | $13.0B |
| Q1 26 | $51.4M | — | ||
| Q4 25 | $50.8B | $45.2B | ||
| Q3 25 | $51.6B | $44.6B | ||
| Q2 25 | $54.0B | $44.2B | ||
| Q1 25 | $50.3B | $43.8B | ||
| Q4 24 | $49.0B | $43.7B | ||
| Q3 24 | $49.9B | $43.3B | ||
| Q2 24 | $51.5B | $42.6B |
| Q1 26 | 1.36× | — | ||
| Q4 25 | 1.63× | 1.06× | ||
| Q3 25 | — | 1.09× | ||
| Q2 25 | — | 1.11× | ||
| Q1 25 | — | 1.15× | ||
| Q4 24 | 2.78× | 1.16× | ||
| Q3 24 | — | 1.21× | ||
| Q2 24 | — | 1.30× |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | — | $1.1B |
| Free Cash FlowOCF − Capex | $363.0M | $334.0M |
| FCF MarginFCF / Revenue | 7.2% | 11.2% |
| Capex IntensityCapex / Revenue | 1.3% | 24.5% |
| Cash ConversionOCF / Net Profit | — | 1.65× |
| TTM Free Cash FlowTrailing 4 quarters | $3.5B | $2.2B |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | — | ||
| Q4 25 | $1.4B | $1.1B | ||
| Q3 25 | $1.1B | $1.3B | ||
| Q2 25 | $796.0M | $1.1B | ||
| Q1 25 | $140.0M | $950.0M | ||
| Q4 24 | $1.2B | $951.0M | ||
| Q3 24 | $1.0B | $1.2B | ||
| Q2 24 | $513.0M | $1.0B |
| Q1 26 | $363.0M | — | ||
| Q4 25 | $1.3B | $334.0M | ||
| Q3 25 | $1.1B | $720.0M | ||
| Q2 25 | $732.0M | $602.0M | ||
| Q1 25 | $84.0M | $501.0M | ||
| Q4 24 | $1.1B | $276.0M | ||
| Q3 24 | $951.0M | $645.0M | ||
| Q2 24 | $460.0M | $468.0M |
| Q1 26 | 7.2% | — | ||
| Q4 25 | 30.8% | 11.2% | ||
| Q3 25 | 27.0% | 23.2% | ||
| Q2 25 | 17.6% | 19.4% | ||
| Q1 25 | 1.8% | 16.7% | ||
| Q4 24 | 27.6% | 9.1% | ||
| Q3 24 | 25.6% | 21.1% | ||
| Q2 24 | 12.2% | 15.4% |
| Q1 26 | 1.3% | — | ||
| Q4 25 | 1.7% | 24.5% | ||
| Q3 25 | 1.7% | 17.8% | ||
| Q2 25 | 1.5% | 15.3% | ||
| Q1 25 | 1.2% | 15.0% | ||
| Q4 24 | 1.3% | 22.3% | ||
| Q3 24 | 1.7% | 19.0% | ||
| Q2 24 | 1.4% | 18.7% |
| Q1 26 | — | — | ||
| Q4 25 | 0.83× | 1.65× | ||
| Q3 25 | 2.51× | 1.79× | ||
| Q2 25 | 1.37× | 1.40× | ||
| Q1 25 | 0.15× | 1.27× | ||
| Q4 24 | 1.68× | 1.30× | ||
| Q3 24 | 2.95× | 1.12× | ||
| Q2 24 | 0.98× | 1.41× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
AON
| Commercial Risk Solutions | $2.2B | 44% |
| Reinsurance Solutions | $1.3B | 25% |
| Health Solutions | $1.1B | 22% |
| Wealth Solutions | $420.0M | 8% |
NSC
| Railway Operating Revenues Market Group Merchandise | $1.9B | 63% |
| Metals And Construction | $404.0M | 14% |
| Railway Operating Revenues Market Group Coal | $347.0M | 12% |
| Automotive | $293.0M | 10% |
