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Side-by-side financial comparison of MKS INC (MKSI) 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 $1.0B, roughly 1.6× MKS INC). WHITE MOUNTAINS INSURANCE GROUP LTD runs the higher net margin — 52.1% vs 10.3%, a 41.8% gap on every dollar of revenue. On growth, WHITE MOUNTAINS INSURANCE GROUP LTD posted the faster year-over-year revenue change (348.0% vs 10.6%). Over the past eight quarters, WHITE MOUNTAINS INSURANCE GROUP LTD's revenue compounded faster (57.4% CAGR vs 9.1%).

MKS, Inc is a subsidiary of PTC, Inc. It was previously a multinational independent software vendor that was acquired by Parametric Technology Corporation on May 31, 2011. MKS operated in the Application Lifecycle Management (ALM) and Systems Administration market segments.

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.

MKSI vs WTM — Head-to-Head

Bigger by revenue
WTM
WTM
1.6× larger
WTM
$1.6B
$1.0B
MKSI
Growing faster (revenue YoY)
WTM
WTM
+337.4% gap
WTM
348.0%
10.6%
MKSI
Higher net margin
WTM
WTM
41.8% more per $
WTM
52.1%
10.3%
MKSI
Faster 2-yr revenue CAGR
WTM
WTM
Annualised
WTM
57.4%
9.1%
MKSI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MKSI
MKSI
WTM
WTM
Revenue
$1.0B
$1.6B
Net Profit
$107.0M
$835.8M
Gross Margin
46.3%
97.1%
Operating Margin
13.9%
56.2%
Net Margin
10.3%
52.1%
Revenue YoY
10.6%
348.0%
Net Profit YoY
18.9%
741.0%
EPS (diluted)
$1.58
$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
MKSI
MKSI
WTM
WTM
Q4 25
$1.0B
$1.6B
Q3 25
$988.0M
$864.2M
Q2 25
$973.0M
$689.2M
Q1 25
$936.0M
$577.8M
Q4 24
$935.0M
$358.0M
Q3 24
$896.0M
$839.1M
Q2 24
$887.0M
$395.4M
Q1 24
$868.0M
$647.3M
Net Profit
MKSI
MKSI
WTM
WTM
Q4 25
$107.0M
$835.8M
Q3 25
$74.0M
$113.8M
Q2 25
$62.0M
$122.9M
Q1 25
$52.0M
$33.9M
Q4 24
$90.0M
$-130.4M
Q3 24
$62.0M
$179.0M
Q2 24
$23.0M
$-54.6M
Q1 24
$15.0M
$236.4M
Gross Margin
MKSI
MKSI
WTM
WTM
Q4 25
46.3%
97.1%
Q3 25
46.7%
93.6%
Q2 25
46.6%
93.8%
Q1 25
47.4%
98.7%
Q4 24
47.3%
97.9%
Q3 24
48.2%
99.1%
Q2 24
47.2%
98.2%
Q1 24
47.8%
98.8%
Operating Margin
MKSI
MKSI
WTM
WTM
Q4 25
13.9%
56.2%
Q3 25
14.0%
20.7%
Q2 25
13.9%
25.6%
Q1 25
11.9%
12.5%
Q4 24
14.7%
-33.7%
Q3 24
14.3%
28.5%
Q2 24
14.3%
-8.8%
Q1 24
12.2%
35.9%
Net Margin
MKSI
MKSI
WTM
WTM
Q4 25
10.3%
52.1%
Q3 25
7.5%
13.2%
Q2 25
6.4%
17.8%
Q1 25
5.6%
5.9%
Q4 24
9.6%
-36.4%
Q3 24
6.9%
21.3%
Q2 24
2.6%
-13.8%
Q1 24
1.7%
36.5%
EPS (diluted)
MKSI
MKSI
WTM
WTM
Q4 25
$1.58
$325.02
Q3 25
$1.10
$44.18
Q2 25
$0.92
$47.75
Q1 25
$0.77
$13.19
Q4 24
$1.34
$-50.98
Q3 24
$0.92
$69.68
Q2 24
$0.33
$-21.24
Q1 24
$0.22
$92.33

Balance Sheet & Financial Strength

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

Metric
MKSI
MKSI
WTM
WTM
Cash + ST InvestmentsLiquidity on hand
$418.0M
Total DebtLower is stronger
$4.2B
$837.0M
Stockholders' EquityBook value
$2.7B
$5.4B
Total Assets
$8.8B
$12.3B
Debt / EquityLower = less leverage
1.53×
0.15×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MKSI
MKSI
WTM
WTM
Q4 25
$418.0M
Q3 25
$413.0M
Q2 25
$498.0M
Q1 25
$407.0M
Q4 24
$420.0M
Q3 24
$439.0M
Q2 24
$506.0M
Q1 24
$1.0M
Total Debt
MKSI
MKSI
WTM
WTM
Q4 25
$4.2B
$837.0M
Q3 25
$4.3B
$870.4M
Q2 25
$4.4B
$694.6M
Q1 25
$4.4B
$676.1M
Q4 24
$4.5B
$562.5M
Q3 24
$4.8B
$544.9M
Q2 24
$4.8B
$530.2M
Q1 24
$4.7B
$532.1M
Stockholders' Equity
MKSI
MKSI
WTM
WTM
Q4 25
$2.7B
$5.4B
Q3 25
$2.6B
$4.8B
Q2 25
$2.6B
$4.6B
Q1 25
$2.4B
$4.5B
Q4 24
$2.3B
$4.5B
Q3 24
$2.4B
$4.6B
Q2 24
$2.2B
$4.4B
Q1 24
$2.4B
$4.5B
Total Assets
MKSI
MKSI
WTM
WTM
Q4 25
$8.8B
$12.3B
Q3 25
$8.8B
$12.3B
Q2 25
$8.8B
$11.8B
Q1 25
$8.6B
$11.0B
Q4 24
$8.6B
$9.9B
Q3 24
$9.0B
$10.3B
Q2 24
$8.9B
$10.2B
Q1 24
$8.9B
$9.6B
Debt / Equity
MKSI
MKSI
WTM
WTM
Q4 25
1.53×
0.15×
Q3 25
1.64×
0.18×
Q2 25
1.71×
0.15×
Q1 25
1.87×
0.15×
Q4 24
1.93×
0.13×
Q3 24
1.98×
0.12×
Q2 24
2.16×
0.12×
Q1 24
1.94×
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
MKSI
MKSI
WTM
WTM
Operating Cash FlowLast quarter
$142.0M
$53.9M
Free Cash FlowOCF − Capex
$92.0M
FCF MarginFCF / Revenue
8.9%
Capex IntensityCapex / Revenue
4.8%
Cash ConversionOCF / Net Profit
1.33×
0.06×
TTM Free Cash FlowTrailing 4 quarters
$497.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MKSI
MKSI
WTM
WTM
Q4 25
$142.0M
$53.9M
Q3 25
$197.0M
$359.3M
Q2 25
$165.0M
$177.5M
Q1 25
$141.0M
$-40.2M
Q4 24
$176.0M
$64.1M
Q3 24
$163.0M
$269.4M
Q2 24
$122.0M
$216.8M
Q1 24
$67.0M
$36.5M
Free Cash Flow
MKSI
MKSI
WTM
WTM
Q4 25
$92.0M
Q3 25
$146.0M
Q2 25
$136.0M
Q1 25
$123.0M
Q4 24
$125.0M
Q3 24
$141.0M
Q2 24
$95.0M
Q1 24
$49.0M
FCF Margin
MKSI
MKSI
WTM
WTM
Q4 25
8.9%
Q3 25
14.8%
Q2 25
14.0%
Q1 25
13.1%
Q4 24
13.4%
Q3 24
15.7%
Q2 24
10.7%
Q1 24
5.6%
Capex Intensity
MKSI
MKSI
WTM
WTM
Q4 25
4.8%
Q3 25
5.2%
Q2 25
3.0%
Q1 25
1.9%
Q4 24
5.5%
Q3 24
2.5%
Q2 24
3.0%
Q1 24
2.1%
Cash Conversion
MKSI
MKSI
WTM
WTM
Q4 25
1.33×
0.06×
Q3 25
2.66×
3.16×
Q2 25
2.66×
1.44×
Q1 25
2.71×
-1.19×
Q4 24
1.96×
Q3 24
2.63×
1.51×
Q2 24
5.30×
Q1 24
4.47×
0.15×

Financial Flow Comparison

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

Revenue Breakdown by Segment

MKSI
MKSI

Electronics And Packaging$303.0M29%
Specialty Industrial$295.0M29%
Photonics Solutions Division$274.0M26%
Services$125.0M12%
Other$37.0M4%

WTM
WTM

Segment breakdown not available.

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