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Side-by-side financial comparison of Pinnacle West Capital (PNW) 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 $1.1B, roughly 1.4× Pinnacle West Capital). WHITE MOUNTAINS INSURANCE GROUP LTD runs the higher net margin — 52.1% vs 1.6%, a 50.6% gap on every dollar of revenue. On growth, WHITE MOUNTAINS INSURANCE GROUP LTD posted the faster year-over-year revenue change (348.0% vs 3.0%). Over the past eight quarters, WHITE MOUNTAINS INSURANCE GROUP LTD's revenue compounded faster (57.4% CAGR vs 8.9%).

Pinnacle West Capital Corporation is an American utility holding company that owns Arizona Public Service (APS). It is publicly traded on the New York Stock exchange and a component of the S&P 500 stock market index. APS is the largest utility company in Arizona and is regulated by the Arizona Corporation Commission (ACC).

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.

PNW vs WTM — Head-to-Head

Bigger by revenue
WTM
WTM
1.4× larger
WTM
$1.6B
$1.1B
PNW
Growing faster (revenue YoY)
WTM
WTM
+345.0% gap
WTM
348.0%
3.0%
PNW
Higher net margin
WTM
WTM
50.6% more per $
WTM
52.1%
1.6%
PNW
Faster 2-yr revenue CAGR
WTM
WTM
Annualised
WTM
57.4%
8.9%
PNW

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
PNW
PNW
WTM
WTM
Revenue
$1.1B
$1.6B
Net Profit
$17.6M
$835.8M
Gross Margin
97.1%
Operating Margin
10.7%
56.2%
Net Margin
1.6%
52.1%
Revenue YoY
3.0%
348.0%
Net Profit YoY
798.0%
741.0%
EPS (diluted)
$0.12
$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
PNW
PNW
WTM
WTM
Q4 25
$1.1B
$1.6B
Q3 25
$1.8B
$864.2M
Q2 25
$1.4B
$689.2M
Q1 25
$1.0B
$577.8M
Q4 24
$1.1B
$358.0M
Q3 24
$1.8B
$839.1M
Q2 24
$1.3B
$395.4M
Q1 24
$951.7M
$647.3M
Net Profit
PNW
PNW
WTM
WTM
Q4 25
$17.6M
$835.8M
Q3 25
$417.5M
$113.8M
Q2 25
$196.9M
$122.9M
Q1 25
$-338.0K
$33.9M
Q4 24
$-2.5M
$-130.4M
Q3 24
$399.3M
$179.0M
Q2 24
$208.1M
$-54.6M
Q1 24
$21.2M
$236.4M
Gross Margin
PNW
PNW
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
PNW
PNW
WTM
WTM
Q4 25
10.7%
56.2%
Q3 25
32.0%
20.7%
Q2 25
22.6%
25.6%
Q1 25
5.5%
12.5%
Q4 24
7.7%
-33.7%
Q3 24
30.9%
28.5%
Q2 24
24.0%
-8.8%
Q1 24
7.0%
35.9%
Net Margin
PNW
PNW
WTM
WTM
Q4 25
1.6%
52.1%
Q3 25
22.9%
13.2%
Q2 25
14.5%
17.8%
Q1 25
-0.0%
5.9%
Q4 24
-0.2%
-36.4%
Q3 24
22.6%
21.3%
Q2 24
15.9%
-13.8%
Q1 24
2.2%
36.5%
EPS (diluted)
PNW
PNW
WTM
WTM
Q4 25
$0.12
$325.02
Q3 25
$3.39
$44.18
Q2 25
$1.58
$47.75
Q1 25
$-0.04
$13.19
Q4 24
$-0.04
$-50.98
Q3 24
$3.37
$69.68
Q2 24
$1.76
$-21.24
Q1 24
$0.15
$92.33

Balance Sheet & Financial Strength

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

Metric
PNW
PNW
WTM
WTM
Cash + ST InvestmentsLiquidity on hand
$6.6M
Total DebtLower is stronger
$837.0M
Stockholders' EquityBook value
$7.0B
$5.4B
Total Assets
$30.0B
$12.3B
Debt / EquityLower = less leverage
0.15×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PNW
PNW
WTM
WTM
Q4 25
$6.6M
Q3 25
$30.9M
Q2 25
$18.8M
Q1 25
$10.0M
Q4 24
$3.8M
Q3 24
$49.2M
Q2 24
$4.0M
Q1 24
$9.6M
Total Debt
PNW
PNW
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
PNW
PNW
WTM
WTM
Q4 25
$7.0B
$5.4B
Q3 25
$7.2B
$4.8B
Q2 25
$6.7B
$4.6B
Q1 25
$6.7B
$4.5B
Q4 24
$6.8B
$4.5B
Q3 24
$6.6B
$4.6B
Q2 24
$6.2B
$4.4B
Q1 24
$6.2B
$4.5B
Total Assets
PNW
PNW
WTM
WTM
Q4 25
$30.0B
$12.3B
Q3 25
$29.9B
$12.3B
Q2 25
$29.2B
$11.8B
Q1 25
$27.2B
$11.0B
Q4 24
$26.1B
$9.9B
Q3 24
$26.3B
$10.3B
Q2 24
$25.7B
$10.2B
Q1 24
$24.8B
$9.6B
Debt / Equity
PNW
PNW
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
PNW
PNW
WTM
WTM
Operating Cash FlowLast quarter
$476.8M
$53.9M
Free Cash FlowOCF − Capex
$-192.7M
FCF MarginFCF / Revenue
-17.1%
Capex IntensityCapex / Revenue
59.3%
Cash ConversionOCF / Net Profit
27.09×
0.06×
TTM Free Cash FlowTrailing 4 quarters
$-819.5M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PNW
PNW
WTM
WTM
Q4 25
$476.8M
$53.9M
Q3 25
$665.0M
$359.3M
Q2 25
$261.4M
$177.5M
Q1 25
$401.9M
$-40.2M
Q4 24
$439.5M
$64.1M
Q3 24
$633.2M
$269.4M
Q2 24
$189.8M
$216.8M
Q1 24
$347.4M
$36.5M
Free Cash Flow
PNW
PNW
WTM
WTM
Q4 25
$-192.7M
Q3 25
$42.0M
Q2 25
$-448.1M
Q1 25
$-220.7M
Q4 24
$-92.1M
Q3 24
$-32.7M
Q2 24
$-344.2M
Q1 24
$-170.4M
FCF Margin
PNW
PNW
WTM
WTM
Q4 25
-17.1%
Q3 25
2.3%
Q2 25
-33.0%
Q1 25
-21.4%
Q4 24
-8.4%
Q3 24
-1.8%
Q2 24
-26.3%
Q1 24
-17.9%
Capex Intensity
PNW
PNW
WTM
WTM
Q4 25
59.3%
Q3 25
34.2%
Q2 25
52.2%
Q1 25
60.3%
Q4 24
48.5%
Q3 24
37.6%
Q2 24
40.8%
Q1 24
54.4%
Cash Conversion
PNW
PNW
WTM
WTM
Q4 25
27.09×
0.06×
Q3 25
1.59×
3.16×
Q2 25
1.33×
1.44×
Q1 25
-1.19×
Q4 24
Q3 24
1.59×
1.51×
Q2 24
0.91×
Q1 24
16.41×
0.15×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PNW
PNW

Electricand Transmission Service$1.1B100%
Other Services$4.4M0%

WTM
WTM

Segment breakdown not available.

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