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Side-by-side financial comparison of Ameren (AEE) and Constellation Energy (CEG), based on the latest 10-Q / 10-K filings. Click either name above to swap in a different company.
Constellation Energy is the larger business by last-quarter revenue ($5.7B vs $1.8B, roughly 3.2× Ameren). Ameren runs the higher net margin — 14.2% vs 7.6%, a 6.6% gap on every dollar of revenue. On growth, Constellation Energy posted the faster year-over-year revenue change (25.8% vs -8.2%). Ameren produced more free cash flow last quarter ($-54.0M vs $-181.0M). Over the past eight quarters, Constellation Energy's revenue compounded faster (4.0% CAGR vs -0.9%).
Ameren Corporation, together with its subsidiaries, operates as a public utility holding company in the United States. It operates through four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. The company engages in the rate-regulated electric generation, transmission, and distribution activities; and rate-regulated natural gas distribution and transmission businesses. It primarily generates electricity through coal, nucle...
Constellation Energy Corporation is an American energy company headquartered in Baltimore, Maryland. The company provides electric power, natural gas, and energy management services. It has approximately two million customers across the continental United States.
AEE vs CEG — Head-to-Head
Income Statement — Q4 2025 vs Q4 2025
| Metric | | |
|---|---|---|
| Revenue | $1.8B | $5.7B |
| Net Profit | $253.0M | $432.0M |
| Gross Margin | — | — |
| Operating Margin | 20.2% | 10.5% |
| Net Margin | 14.2% | 7.6% |
| Revenue YoY | -8.2% | 25.8% |
| Net Profit YoY | 21.6% | -49.3% |
| EPS (diluted) | $0.92 | $1.38 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align — see 8-quarter trend below.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history — bar widths are scaled to the larger of the two companies so you can eyeball the size gap and growth trajectory without doing math. Quarters aligned by calendar period (report date) so offset fiscal years line up.
| Q4 25 | $1.8B | $5.7B | ||
| Q3 25 | $2.7B | $5.7B | ||
| Q2 25 | $2.2B | $5.2B | ||
| Q1 25 | $2.1B | $6.1B | ||
| Q4 24 | $1.9B | $4.5B | ||
| Q3 24 | $2.2B | $4.8B | ||
| Q2 24 | $1.7B | $4.4B | ||
| Q1 24 | $1.8B | $5.3B |
| Q4 25 | $253.0M | $432.0M | ||
| Q3 25 | $641.0M | $930.0M | ||
| Q2 25 | $277.0M | $839.0M | ||
| Q1 25 | $290.0M | $118.0M | ||
| Q4 24 | $208.0M | $852.0M | ||
| Q3 24 | $457.0M | $1.2B | ||
| Q2 24 | $260.0M | $814.0M | ||
| Q1 24 | $262.0M | $883.0M |
| Q4 25 | 20.2% | 10.5% | ||
| Q3 25 | 30.6% | 19.0% | ||
| Q2 25 | 18.5% | 18.4% | ||
| Q1 25 | 20.5% | 7.4% | ||
| Q4 24 | 10.2% | 21.5% | ||
| Q3 24 | 27.0% | 30.7% | ||
| Q2 24 | 21.3% | 25.0% | ||
| Q1 24 | 20.4% | 15.5% |
| Q4 25 | 14.2% | 7.6% | ||
| Q3 25 | 23.7% | 16.3% | ||
| Q2 25 | 12.5% | 16.3% | ||
| Q1 25 | 13.8% | 1.9% | ||
| Q4 24 | 10.7% | 18.8% | ||
| Q3 24 | 21.0% | 25.1% | ||
| Q2 24 | 15.4% | 18.5% | ||
| Q1 24 | 14.4% | 16.8% |
| Q4 25 | $0.92 | $1.38 | ||
| Q3 25 | $2.35 | $2.97 | ||
| Q2 25 | $1.01 | $2.67 | ||
| Q1 25 | $1.07 | $0.38 | ||
| Q4 24 | $0.77 | $2.71 | ||
| Q3 24 | $1.70 | $3.82 | ||
| Q2 24 | $0.97 | $2.58 | ||
| Q1 24 | $0.98 | $2.78 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest filing — the kind of financial-strength check premium terminals charge for.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $13.0M | $3.6B |
| Total DebtLower is stronger | $19.4B | $7.4B |
| Stockholders' EquityBook value | $13.4B | $14.5B |
| Total Assets | $48.5B | $57.2B |
| Debt / EquityLower = less leverage | 1.45× | 0.51× |
8-quarter trend — quarters aligned by calendar period so offset fiscal years match up.
| Q4 25 | $13.0M | $3.6B | ||
| Q3 25 | $9.0M | $4.0B | ||
| Q2 25 | $11.0M | $2.0B | ||
| Q1 25 | $23.0M | $1.8B | ||
| Q4 24 | $7.0M | $3.0B | ||
| Q3 24 | $17.0M | $1.8B | ||
| Q2 24 | $19.0M | $311.0M | ||
| Q1 24 | $85.0M | $562.0M |
| Q4 25 | $19.4B | $7.4B | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | $17.8B | $8.5B | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | $13.4B | $14.5B | ||
| Q3 25 | $12.8B | $14.3B | ||
| Q2 25 | $12.3B | $13.4B | ||
| Q1 25 | $12.2B | $13.0B | ||
| Q4 24 | $12.1B | $13.2B | ||
| Q3 24 | $11.8B | $12.6B | ||
| Q2 24 | $11.5B | $11.4B | ||
| Q1 24 | $11.4B | $11.2B |
| Q4 25 | $48.5B | $57.2B | ||
| Q3 25 | $47.4B | $56.2B | ||
| Q2 25 | $46.6B | $53.0B | ||
| Q1 25 | $45.7B | $52.3B | ||
| Q4 24 | $44.6B | $52.9B | ||
| Q3 24 | $43.3B | $51.8B | ||
| Q2 24 | $42.3B | $51.3B | ||
| Q1 24 | $41.3B | $52.0B |
| Q4 25 | 1.45× | 0.51× | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | 1.47× | 0.64× | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Net income can be massaged; cash flow is harder to fake.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $956.0M | $805.0M |
| Free Cash FlowOCF − Capex | $-54.0M | $-181.0M |
| FCF MarginFCF / Revenue | -3.0% | -3.2% |
| Capex IntensityCapex / Revenue; lower = less reinvestment burden | 56.7% | 17.3% |
| Cash ConversionOCF / Net Profit; >1× = earnings back up with cash | 3.78× | 1.86× |
| TTM Free Cash FlowTrailing 4 quarters | $-775.0M | $1.3B |
8-quarter trend — quarters aligned by calendar period so offset fiscal years match up.
| Q4 25 | $956.0M | $805.0M | ||
| Q3 25 | $1.1B | $1.8B | ||
| Q2 25 | $862.0M | $1.5B | ||
| Q1 25 | $431.0M | $107.0M | ||
| Q4 24 | $817.0M | $-1.0B | ||
| Q3 24 | $897.0M | $-112.0M | ||
| Q2 24 | $557.0M | $-613.0M | ||
| Q1 24 | $492.0M | $-723.0M |
| Q4 25 | $-54.0M | $-181.0M | ||
| Q3 25 | $116.0M | $1.5B | ||
| Q2 25 | $-204.0M | $710.0M | ||
| Q1 25 | $-633.0M | $-699.0M | ||
| Q4 24 | $-473.0M | $-1.7B | ||
| Q3 24 | $-240.0M | $-664.0M | ||
| Q2 24 | $-445.0M | $-1.2B | ||
| Q1 24 | $-398.0M | $-1.5B |
| Q4 25 | -3.0% | -3.2% | ||
| Q3 25 | 4.3% | 25.6% | ||
| Q2 25 | -9.2% | 13.8% | ||
| Q1 25 | -30.2% | -11.4% | ||
| Q4 24 | -24.4% | -38.6% | ||
| Q3 24 | -11.0% | -13.9% | ||
| Q2 24 | -26.3% | -26.3% | ||
| Q1 24 | -21.9% | -27.8% |
| Q4 25 | 56.7% | 17.3% | ||
| Q3 25 | 36.6% | 6.8% | ||
| Q2 25 | 48.0% | 14.9% | ||
| Q1 25 | 50.7% | 13.2% | ||
| Q4 24 | 66.5% | 16.1% | ||
| Q3 24 | 52.3% | 11.6% | ||
| Q2 24 | 59.2% | 12.4% | ||
| Q1 24 | 49.0% | 14.0% |
| Q4 25 | 3.78× | 1.86× | ||
| Q3 25 | 1.72× | 1.99× | ||
| Q2 25 | 3.11× | 1.76× | ||
| Q1 25 | 1.49× | 0.91× | ||
| Q4 24 | 3.93× | -1.19× | ||
| Q3 24 | 1.96× | -0.09× | ||
| Q2 24 | 2.14× | -0.75× | ||
| Q1 24 | 1.88× | -0.82× |
Financial Flow Comparison
Sankey diagram of revenue → gross profit → operating profit → net profit for each company. Charts shown full-width and stacked so both segment hierarchies are readable side-by-side on desktop and mobile.
Revenue Breakdown by Segment
AEE
Segment breakdown not available.
CEG
| Constellation Mid Atlantic | $1.6B | 29% |
| Constellation Midwest | $1.3B | 23% |
| Constellation Other Regions | $1.1B | 20% |
| Other | $660.0M | 12% |
| Constellation New York | $618.0M | 11% |
| Constellation ERCOT | $292.0M | 5% |
