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

WHITE MOUNTAINS INSURANCE GROUP LTD is the larger business by last-quarter revenue ($1.6B vs $1.5B, roughly 1.1× Realty Income). WHITE MOUNTAINS INSURANCE GROUP LTD runs the higher net margin — 52.1% vs 19.9%, a 32.2% gap on every dollar of revenue. On growth, WHITE MOUNTAINS INSURANCE GROUP LTD posted the faster year-over-year revenue change (348.0% vs 11.0%). Over the past eight quarters, WHITE MOUNTAINS INSURANCE GROUP LTD's revenue compounded faster (57.4% CAGR vs 8.6%).

Realty Income Corporation is a real estate investment trust that invests in free-standing, single-tenant commercial properties in the United States, the United Kingdom, and six other countries in Europe. These properties are subject to NNN Leases. The company is organized in Maryland with its headquarters in San Diego, California.

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.

O vs WTM — Head-to-Head

Bigger by revenue
WTM
WTM
1.1× larger
WTM
$1.6B
$1.5B
O
Growing faster (revenue YoY)
WTM
WTM
+337.0% gap
WTM
348.0%
11.0%
O
Higher net margin
WTM
WTM
32.2% more per $
WTM
52.1%
19.9%
O
Faster 2-yr revenue CAGR
WTM
WTM
Annualised
WTM
57.4%
8.6%
O

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
O
O
WTM
WTM
Revenue
$1.5B
$1.6B
Net Profit
$296.1M
$835.8M
Gross Margin
97.1%
Operating Margin
21.7%
56.2%
Net Margin
19.9%
52.1%
Revenue YoY
11.0%
348.0%
Net Profit YoY
48.3%
741.0%
EPS (diluted)
$0.32
$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
O
O
WTM
WTM
Q4 25
$1.5B
$1.6B
Q3 25
$1.5B
$864.2M
Q2 25
$1.4B
$689.2M
Q1 25
$1.4B
$577.8M
Q4 24
$1.3B
$358.0M
Q3 24
$1.3B
$839.1M
Q2 24
$1.3B
$395.4M
Q1 24
$1.3B
$647.3M
Net Profit
O
O
WTM
WTM
Q4 25
$296.1M
$835.8M
Q3 25
$315.8M
$113.8M
Q2 25
$196.9M
$122.9M
Q1 25
$249.8M
$33.9M
Q4 24
$199.6M
$-130.4M
Q3 24
$269.5M
$179.0M
Q2 24
$259.4M
$-54.6M
Q1 24
$132.3M
$236.4M
Gross Margin
O
O
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
O
O
WTM
WTM
Q4 25
21.7%
56.2%
Q3 25
23.2%
20.7%
Q2 25
15.8%
25.6%
Q1 25
19.3%
12.5%
Q4 24
16.5%
-33.7%
Q3 24
21.5%
28.5%
Q2 24
20.7%
-8.8%
Q1 24
11.9%
35.9%
Net Margin
O
O
WTM
WTM
Q4 25
19.9%
52.1%
Q3 25
21.5%
13.2%
Q2 25
14.0%
17.8%
Q1 25
18.1%
5.9%
Q4 24
14.9%
-36.4%
Q3 24
20.2%
21.3%
Q2 24
19.4%
-13.8%
Q1 24
10.5%
36.5%
EPS (diluted)
O
O
WTM
WTM
Q4 25
$0.32
$325.02
Q3 25
$0.35
$44.18
Q2 25
$0.22
$47.75
Q1 25
$0.28
$13.19
Q4 24
$0.23
$-50.98
Q3 24
$0.30
$69.68
Q2 24
$0.29
$-21.24
Q1 24
$0.16
$92.33

Balance Sheet & Financial Strength

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

Metric
O
O
WTM
WTM
Cash + ST InvestmentsLiquidity on hand
$434.8M
Total DebtLower is stronger
$837.0M
Stockholders' EquityBook value
$39.4B
$5.4B
Total Assets
$72.8B
$12.3B
Debt / EquityLower = less leverage
0.15×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
O
O
WTM
WTM
Q4 25
$434.8M
Q3 25
$417.2M
Q2 25
$800.4M
Q1 25
$319.0M
Q4 24
$445.0M
Q3 24
$397.0M
Q2 24
$442.8M
Q1 24
$680.2M
Total Debt
O
O
WTM
WTM
Q4 25
$837.0M
Q3 25
$870.4M
Q2 25
$694.6M
Q1 25
$676.1M
Q4 24
$562.5M
Q3 24
$544.9M
Q2 24
$530.2M
Q1 24
$532.1M
Stockholders' Equity
O
O
WTM
WTM
Q4 25
$39.4B
$5.4B
Q3 25
$39.1B
$4.8B
Q2 25
$39.2B
$4.6B
Q1 25
$39.0B
$4.5B
Q4 24
$38.8B
$4.5B
Q3 24
$38.5B
$4.6B
Q2 24
$38.6B
$4.4B
Q1 24
$39.0B
$4.5B
Total Assets
O
O
WTM
WTM
Q4 25
$72.8B
$12.3B
Q3 25
$71.3B
$12.3B
Q2 25
$71.4B
$11.8B
Q1 25
$69.8B
$11.0B
Q4 24
$68.8B
$9.9B
Q3 24
$68.5B
$10.3B
Q2 24
$68.1B
$10.2B
Q1 24
$68.3B
$9.6B
Debt / Equity
O
O
WTM
WTM
Q4 25
0.15×
Q3 25
0.18×
Q2 25
0.15×
Q1 25
0.15×
Q4 24
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
O
O
WTM
WTM
Operating Cash FlowLast quarter
$1.2B
$53.9M
Free Cash FlowOCF − Capex
$1.2B
FCF MarginFCF / Revenue
77.6%
Capex IntensityCapex / Revenue
3.3%
Cash ConversionOCF / Net Profit
4.06×
0.06×
TTM Free Cash FlowTrailing 4 quarters
$3.9B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
O
O
WTM
WTM
Q4 25
$1.2B
$53.9M
Q3 25
$943.1M
$359.3M
Q2 25
$1.1B
$177.5M
Q1 25
$787.5M
$-40.2M
Q4 24
$972.0M
$64.1M
Q3 24
$841.5M
$269.4M
Q2 24
$981.2M
$216.8M
Q1 24
$778.7M
$36.5M
Free Cash Flow
O
O
WTM
WTM
Q4 25
$1.2B
Q3 25
$909.9M
Q2 25
$1.0B
Q1 25
$764.6M
Q4 24
$935.8M
Q3 24
$807.9M
Q2 24
$939.2M
Q1 24
$769.0M
FCF Margin
O
O
WTM
WTM
Q4 25
77.6%
Q3 25
61.9%
Q2 25
73.3%
Q1 25
55.4%
Q4 24
69.8%
Q3 24
60.7%
Q2 24
70.1%
Q1 24
61.0%
Capex Intensity
O
O
WTM
WTM
Q4 25
3.3%
Q3 25
2.3%
Q2 25
1.9%
Q1 25
1.7%
Q4 24
2.7%
Q3 24
2.5%
Q2 24
3.1%
Q1 24
0.8%
Cash Conversion
O
O
WTM
WTM
Q4 25
4.06×
0.06×
Q3 25
2.99×
3.16×
Q2 25
5.39×
1.44×
Q1 25
3.15×
-1.19×
Q4 24
4.87×
Q3 24
3.12×
1.51×
Q2 24
3.78×
Q1 24
5.89×
0.15×

Financial Flow Comparison

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

Revenue Breakdown by Segment

O
O

Product And Service Retail$900.8M61%
Other$531.5M36%

WTM
WTM

Segment breakdown not available.

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