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Side-by-side financial comparison of Ameren (AEE) and WHITE MOUNTAINS INSURANCE GROUP LTD (WTM). Click either name above to swap in a different company.

Ameren is the larger business by last-quarter revenue ($1.8B vs $1.6B, roughly 1.1× WHITE MOUNTAINS INSURANCE GROUP LTD). WHITE MOUNTAINS INSURANCE GROUP LTD runs the higher net margin — 52.1% vs 14.2%, a 37.9% gap on every dollar of revenue. On growth, WHITE MOUNTAINS INSURANCE GROUP LTD posted the faster year-over-year revenue change (348.0% vs -8.2%). Over the past eight quarters, WHITE MOUNTAINS INSURANCE GROUP LTD's revenue compounded faster (57.4% 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...

White Mountains Insurance Group is a diversified insurance and related financial services holding company based in Hamilton, Bermuda. Redomiciled from Delaware, United States, on October 25, 1999, the company conducts most of its business through its insurance subsidiaries and other affiliates.

AEE vs WTM — Head-to-Head

Bigger by revenue
AEE
AEE
1.1× larger
AEE
$1.8B
$1.6B
WTM
Growing faster (revenue YoY)
WTM
WTM
+356.2% gap
WTM
348.0%
-8.2%
AEE
Higher net margin
WTM
WTM
37.9% more per $
WTM
52.1%
14.2%
AEE
Faster 2-yr revenue CAGR
WTM
WTM
Annualised
WTM
57.4%
-0.9%
AEE

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AEE
AEE
WTM
WTM
Revenue
$1.8B
$1.6B
Net Profit
$253.0M
$835.8M
Gross Margin
97.1%
Operating Margin
20.2%
56.2%
Net Margin
14.2%
52.1%
Revenue YoY
-8.2%
348.0%
Net Profit YoY
21.6%
741.0%
EPS (diluted)
$0.92
$325.02

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
WTM
WTM
Q4 25
$1.8B
$1.6B
Q3 25
$2.7B
$864.2M
Q2 25
$2.2B
$689.2M
Q1 25
$2.1B
$577.8M
Q4 24
$1.9B
$358.0M
Q3 24
$2.2B
$839.1M
Q2 24
$1.7B
$395.4M
Q1 24
$1.8B
$647.3M
Net Profit
AEE
AEE
WTM
WTM
Q4 25
$253.0M
$835.8M
Q3 25
$641.0M
$113.8M
Q2 25
$277.0M
$122.9M
Q1 25
$290.0M
$33.9M
Q4 24
$208.0M
$-130.4M
Q3 24
$457.0M
$179.0M
Q2 24
$260.0M
$-54.6M
Q1 24
$262.0M
$236.4M
Gross Margin
AEE
AEE
WTM
WTM
Q4 25
97.1%
Q3 25
93.6%
Q2 25
93.8%
Q1 25
98.7%
Q4 24
97.9%
Q3 24
99.1%
Q2 24
98.2%
Q1 24
98.8%
Operating Margin
AEE
AEE
WTM
WTM
Q4 25
20.2%
56.2%
Q3 25
30.6%
20.7%
Q2 25
18.5%
25.6%
Q1 25
20.5%
12.5%
Q4 24
10.2%
-33.7%
Q3 24
27.0%
28.5%
Q2 24
21.3%
-8.8%
Q1 24
20.4%
35.9%
Net Margin
AEE
AEE
WTM
WTM
Q4 25
14.2%
52.1%
Q3 25
23.7%
13.2%
Q2 25
12.5%
17.8%
Q1 25
13.8%
5.9%
Q4 24
10.7%
-36.4%
Q3 24
21.0%
21.3%
Q2 24
15.4%
-13.8%
Q1 24
14.4%
36.5%
EPS (diluted)
AEE
AEE
WTM
WTM
Q4 25
$0.92
$325.02
Q3 25
$2.35
$44.18
Q2 25
$1.01
$47.75
Q1 25
$1.07
$13.19
Q4 24
$0.77
$-50.98
Q3 24
$1.70
$69.68
Q2 24
$0.97
$-21.24
Q1 24
$0.98
$92.33

Balance Sheet & Financial Strength

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

Metric
AEE
AEE
WTM
WTM
Cash + ST InvestmentsLiquidity on hand
$13.0M
Total DebtLower is stronger
$19.4B
$837.0M
Stockholders' EquityBook value
$13.4B
$5.4B
Total Assets
$48.5B
$12.3B
Debt / EquityLower = less leverage
1.45×
0.15×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AEE
AEE
WTM
WTM
Q4 25
$13.0M
Q3 25
$9.0M
Q2 25
$11.0M
Q1 25
$23.0M
Q4 24
$7.0M
Q3 24
$17.0M
Q2 24
$19.0M
Q1 24
$85.0M
Total Debt
AEE
AEE
WTM
WTM
Q4 25
$19.4B
$837.0M
Q3 25
$870.4M
Q2 25
$694.6M
Q1 25
$676.1M
Q4 24
$17.8B
$562.5M
Q3 24
$544.9M
Q2 24
$530.2M
Q1 24
$532.1M
Stockholders' Equity
AEE
AEE
WTM
WTM
Q4 25
$13.4B
$5.4B
Q3 25
$12.8B
$4.8B
Q2 25
$12.3B
$4.6B
Q1 25
$12.2B
$4.5B
Q4 24
$12.1B
$4.5B
Q3 24
$11.8B
$4.6B
Q2 24
$11.5B
$4.4B
Q1 24
$11.4B
$4.5B
Total Assets
AEE
AEE
WTM
WTM
Q4 25
$48.5B
$12.3B
Q3 25
$47.4B
$12.3B
Q2 25
$46.6B
$11.8B
Q1 25
$45.7B
$11.0B
Q4 24
$44.6B
$9.9B
Q3 24
$43.3B
$10.3B
Q2 24
$42.3B
$10.2B
Q1 24
$41.3B
$9.6B
Debt / Equity
AEE
AEE
WTM
WTM
Q4 25
1.45×
0.15×
Q3 25
0.18×
Q2 25
0.15×
Q1 25
0.15×
Q4 24
1.47×
0.13×
Q3 24
0.12×
Q2 24
0.12×
Q1 24
0.12×

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
WTM
WTM
Operating Cash FlowLast quarter
$956.0M
$53.9M
Free Cash FlowOCF − Capex
$-54.0M
FCF MarginFCF / Revenue
-3.0%
Capex IntensityCapex / Revenue
56.7%
Cash ConversionOCF / Net Profit
3.78×
0.06×
TTM Free Cash FlowTrailing 4 quarters
$-775.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AEE
AEE
WTM
WTM
Q4 25
$956.0M
$53.9M
Q3 25
$1.1B
$359.3M
Q2 25
$862.0M
$177.5M
Q1 25
$431.0M
$-40.2M
Q4 24
$817.0M
$64.1M
Q3 24
$897.0M
$269.4M
Q2 24
$557.0M
$216.8M
Q1 24
$492.0M
$36.5M
Free Cash Flow
AEE
AEE
WTM
WTM
Q4 25
$-54.0M
Q3 25
$116.0M
Q2 25
$-204.0M
Q1 25
$-633.0M
Q4 24
$-473.0M
Q3 24
$-240.0M
Q2 24
$-445.0M
Q1 24
$-398.0M
FCF Margin
AEE
AEE
WTM
WTM
Q4 25
-3.0%
Q3 25
4.3%
Q2 25
-9.2%
Q1 25
-30.2%
Q4 24
-24.4%
Q3 24
-11.0%
Q2 24
-26.3%
Q1 24
-21.9%
Capex Intensity
AEE
AEE
WTM
WTM
Q4 25
56.7%
Q3 25
36.6%
Q2 25
48.0%
Q1 25
50.7%
Q4 24
66.5%
Q3 24
52.3%
Q2 24
59.2%
Q1 24
49.0%
Cash Conversion
AEE
AEE
WTM
WTM
Q4 25
3.78×
0.06×
Q3 25
1.72×
3.16×
Q2 25
3.11×
1.44×
Q1 25
1.49×
-1.19×
Q4 24
3.93×
Q3 24
1.96×
1.51×
Q2 24
2.14×
Q1 24
1.88×
0.15×

Financial Flow Comparison

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

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