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Side-by-side financial comparison of Ameren (AEE) and Transocean Ltd. (RIG). Click either name above to swap in a different company.

Ameren is the larger business by last-quarter revenue ($1.8B vs $1.0B, roughly 1.7× Transocean Ltd.). Ameren runs the higher net margin — 14.2% vs 2.4%, a 11.8% gap on every dollar of revenue. On growth, Transocean Ltd. posted the faster year-over-year revenue change (9.6% vs -8.2%). Transocean Ltd. produced more free cash flow last quarter ($321.0M vs $-54.0M). Over the past eight quarters, Transocean Ltd.'s revenue compounded faster (16.9% 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...

Transocean Ltd. is an American drilling company. It is the world's largest offshore drilling contractor based on revenue and is based in Steinhausen, Switzerland. The company has offices in 20 countries, including Canada, the United States, Norway, United Kingdom, India, Brazil, Singapore, Indonesia, and Malaysia.

AEE vs RIG — Head-to-Head

Bigger by revenue
AEE
AEE
1.7× larger
AEE
$1.8B
$1.0B
RIG
Growing faster (revenue YoY)
RIG
RIG
+17.8% gap
RIG
9.6%
-8.2%
AEE
Higher net margin
AEE
AEE
11.8% more per $
AEE
14.2%
2.4%
RIG
More free cash flow
RIG
RIG
$375.0M more FCF
RIG
$321.0M
$-54.0M
AEE
Faster 2-yr revenue CAGR
RIG
RIG
Annualised
RIG
16.9%
-0.9%
AEE

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AEE
AEE
RIG
RIG
Revenue
$1.8B
$1.0B
Net Profit
$253.0M
$25.0M
Gross Margin
42.0%
Operating Margin
20.2%
23.0%
Net Margin
14.2%
2.4%
Revenue YoY
-8.2%
9.6%
Net Profit YoY
21.6%
257.1%
EPS (diluted)
$0.92
$0.13

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.

Revenue
AEE
AEE
RIG
RIG
Q4 25
$1.8B
$1.0B
Q3 25
$2.7B
$1.0B
Q2 25
$2.2B
$988.0M
Q1 25
$2.1B
$906.0M
Q4 24
$1.9B
$952.0M
Q3 24
$2.2B
$948.0M
Q2 24
$1.7B
$861.0M
Q1 24
$1.8B
$763.0M
Net Profit
AEE
AEE
RIG
RIG
Q4 25
$253.0M
$25.0M
Q3 25
$641.0M
$-1.9B
Q2 25
$277.0M
$-938.0M
Q1 25
$290.0M
$-79.0M
Q4 24
$208.0M
$7.0M
Q3 24
$457.0M
$-494.0M
Q2 24
$260.0M
$-123.0M
Q1 24
$262.0M
$98.0M
Gross Margin
AEE
AEE
RIG
RIG
Q4 25
42.0%
Q3 25
43.2%
Q2 25
39.4%
Q1 25
31.8%
Q4 24
39.2%
Q3 24
40.6%
Q2 24
38.0%
Q1 24
31.5%
Operating Margin
AEE
AEE
RIG
RIG
Q4 25
20.2%
23.0%
Q3 25
30.6%
-163.1%
Q2 25
18.5%
-97.6%
Q1 25
20.5%
7.1%
Q4 24
10.2%
13.7%
Q3 24
27.0%
-51.2%
Q2 24
21.3%
-6.9%
Q1 24
20.4%
-0.4%
Net Margin
AEE
AEE
RIG
RIG
Q4 25
14.2%
2.4%
Q3 25
23.7%
-187.1%
Q2 25
12.5%
-94.9%
Q1 25
13.8%
-8.7%
Q4 24
10.7%
0.7%
Q3 24
21.0%
-52.1%
Q2 24
15.4%
-14.3%
Q1 24
14.4%
12.8%
EPS (diluted)
AEE
AEE
RIG
RIG
Q4 25
$0.92
$0.13
Q3 25
$2.35
$-2.00
Q2 25
$1.01
$-1.06
Q1 25
$1.07
$-0.11
Q4 24
$0.77
$-0.14
Q3 24
$1.70
$-0.58
Q2 24
$0.97
$-0.15
Q1 24
$0.98
$0.11

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
AEE
AEE
RIG
RIG
Cash + ST InvestmentsLiquidity on hand
$13.0M
$620.0M
Total DebtLower is stronger
$19.4B
$5.2B
Stockholders' EquityBook value
$13.4B
$8.1B
Total Assets
$48.5B
$15.6B
Debt / EquityLower = less leverage
1.45×
0.64×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AEE
AEE
RIG
RIG
Q4 25
$13.0M
$620.0M
Q3 25
$9.0M
$833.0M
Q2 25
$11.0M
$377.0M
Q1 25
$23.0M
$263.0M
Q4 24
$7.0M
$560.0M
Q3 24
$17.0M
$435.0M
Q2 24
$19.0M
$475.0M
Q1 24
$85.0M
$446.0M
Total Debt
AEE
AEE
RIG
RIG
Q4 25
$19.4B
$5.2B
Q3 25
$4.8B
Q2 25
$5.9B
Q1 25
$5.9B
Q4 24
$17.8B
$6.2B
Q3 24
$6.5B
Q2 24
$6.8B
Q1 24
$6.8B
Stockholders' Equity
AEE
AEE
RIG
RIG
Q4 25
$13.4B
$8.1B
Q3 25
$12.8B
$8.1B
Q2 25
$12.3B
$9.4B
Q1 25
$12.2B
$10.2B
Q4 24
$12.1B
$10.3B
Q3 24
$11.8B
$10.2B
Q2 24
$11.5B
$10.7B
Q1 24
$11.4B
$10.5B
Total Assets
AEE
AEE
RIG
RIG
Q4 25
$48.5B
$15.6B
Q3 25
$47.4B
$16.2B
Q2 25
$46.6B
$17.8B
Q1 25
$45.7B
$19.0B
Q4 24
$44.6B
$19.4B
Q3 24
$43.3B
$19.5B
Q2 24
$42.3B
$20.3B
Q1 24
$41.3B
$19.9B
Debt / Equity
AEE
AEE
RIG
RIG
Q4 25
1.45×
0.64×
Q3 25
0.60×
Q2 25
0.63×
Q1 25
0.58×
Q4 24
1.47×
0.60×
Q3 24
0.64×
Q2 24
0.63×
Q1 24
0.65×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AEE
AEE
RIG
RIG
Operating Cash FlowLast quarter
$956.0M
$349.0M
Free Cash FlowOCF − Capex
$-54.0M
$321.0M
FCF MarginFCF / Revenue
-3.0%
30.8%
Capex IntensityCapex / Revenue
56.7%
2.7%
Cash ConversionOCF / Net Profit
3.78×
13.96×
TTM Free Cash FlowTrailing 4 quarters
$-775.0M
$626.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AEE
AEE
RIG
RIG
Q4 25
$956.0M
$349.0M
Q3 25
$1.1B
$246.0M
Q2 25
$862.0M
$128.0M
Q1 25
$431.0M
$26.0M
Q4 24
$817.0M
$206.0M
Q3 24
$897.0M
$194.0M
Q2 24
$557.0M
$133.0M
Q1 24
$492.0M
$-86.0M
Free Cash Flow
AEE
AEE
RIG
RIG
Q4 25
$-54.0M
$321.0M
Q3 25
$116.0M
$235.0M
Q2 25
$-204.0M
$104.0M
Q1 25
$-633.0M
$-34.0M
Q4 24
$-473.0M
$177.0M
Q3 24
$-240.0M
$136.0M
Q2 24
$-445.0M
$49.0M
Q1 24
$-398.0M
$-169.0M
FCF Margin
AEE
AEE
RIG
RIG
Q4 25
-3.0%
30.8%
Q3 25
4.3%
22.9%
Q2 25
-9.2%
10.5%
Q1 25
-30.2%
-3.8%
Q4 24
-24.4%
18.6%
Q3 24
-11.0%
14.3%
Q2 24
-26.3%
5.7%
Q1 24
-21.9%
-22.1%
Capex Intensity
AEE
AEE
RIG
RIG
Q4 25
56.7%
2.7%
Q3 25
36.6%
1.1%
Q2 25
48.0%
2.4%
Q1 25
50.7%
6.6%
Q4 24
66.5%
3.0%
Q3 24
52.3%
6.1%
Q2 24
59.2%
9.8%
Q1 24
49.0%
10.9%
Cash Conversion
AEE
AEE
RIG
RIG
Q4 25
3.78×
13.96×
Q3 25
1.72×
Q2 25
3.11×
Q1 25
1.49×
Q4 24
3.93×
29.43×
Q3 24
1.96×
Q2 24
2.14×
Q1 24
1.88×
-0.88×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AEE
AEE

Segment breakdown not available.

RIG
RIG

Ultra Deepwater Floaters$433.0M42%
BR$236.0M23%
Other Geographical$211.0M20%
Harsh Environment Floaters$163.0M16%

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