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Side-by-side financial comparison of MKS INC (MKSI) and Realty Income (O). Click either name above to swap in a different company.

Realty Income is the larger business by last-quarter revenue ($1.5B vs $1.0B, roughly 1.4× MKS INC). Realty Income runs the higher net margin — 19.9% vs 10.3%, a 9.6% gap on every dollar of revenue. On growth, Realty Income posted the faster year-over-year revenue change (11.0% vs 10.6%). Realty Income produced more free cash flow last quarter ($1.2B vs $92.0M). Over the past eight quarters, MKS INC's revenue compounded faster (9.1% CAGR vs 8.6%).

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.

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.

MKSI vs O — Head-to-Head

Bigger by revenue
O
O
1.4× larger
O
$1.5B
$1.0B
MKSI
Growing faster (revenue YoY)
O
O
+0.4% gap
O
11.0%
10.6%
MKSI
Higher net margin
O
O
9.6% more per $
O
19.9%
10.3%
MKSI
More free cash flow
O
O
$1.1B more FCF
O
$1.2B
$92.0M
MKSI
Faster 2-yr revenue CAGR
MKSI
MKSI
Annualised
MKSI
9.1%
8.6%
O

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MKSI
MKSI
O
O
Revenue
$1.0B
$1.5B
Net Profit
$107.0M
$296.1M
Gross Margin
46.3%
Operating Margin
13.9%
21.7%
Net Margin
10.3%
19.9%
Revenue YoY
10.6%
11.0%
Net Profit YoY
18.9%
48.3%
EPS (diluted)
$1.58
$0.32

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
O
O
Q4 25
$1.0B
$1.5B
Q3 25
$988.0M
$1.5B
Q2 25
$973.0M
$1.4B
Q1 25
$936.0M
$1.4B
Q4 24
$935.0M
$1.3B
Q3 24
$896.0M
$1.3B
Q2 24
$887.0M
$1.3B
Q1 24
$868.0M
$1.3B
Net Profit
MKSI
MKSI
O
O
Q4 25
$107.0M
$296.1M
Q3 25
$74.0M
$315.8M
Q2 25
$62.0M
$196.9M
Q1 25
$52.0M
$249.8M
Q4 24
$90.0M
$199.6M
Q3 24
$62.0M
$269.5M
Q2 24
$23.0M
$259.4M
Q1 24
$15.0M
$132.3M
Gross Margin
MKSI
MKSI
O
O
Q4 25
46.3%
Q3 25
46.7%
Q2 25
46.6%
Q1 25
47.4%
Q4 24
47.3%
Q3 24
48.2%
Q2 24
47.2%
Q1 24
47.8%
Operating Margin
MKSI
MKSI
O
O
Q4 25
13.9%
21.7%
Q3 25
14.0%
23.2%
Q2 25
13.9%
15.8%
Q1 25
11.9%
19.3%
Q4 24
14.7%
16.5%
Q3 24
14.3%
21.5%
Q2 24
14.3%
20.7%
Q1 24
12.2%
11.9%
Net Margin
MKSI
MKSI
O
O
Q4 25
10.3%
19.9%
Q3 25
7.5%
21.5%
Q2 25
6.4%
14.0%
Q1 25
5.6%
18.1%
Q4 24
9.6%
14.9%
Q3 24
6.9%
20.2%
Q2 24
2.6%
19.4%
Q1 24
1.7%
10.5%
EPS (diluted)
MKSI
MKSI
O
O
Q4 25
$1.58
$0.32
Q3 25
$1.10
$0.35
Q2 25
$0.92
$0.22
Q1 25
$0.77
$0.28
Q4 24
$1.34
$0.23
Q3 24
$0.92
$0.30
Q2 24
$0.33
$0.29
Q1 24
$0.22
$0.16

Balance Sheet & Financial Strength

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

Metric
MKSI
MKSI
O
O
Cash + ST InvestmentsLiquidity on hand
$418.0M
$434.8M
Total DebtLower is stronger
$4.2B
Stockholders' EquityBook value
$2.7B
$39.4B
Total Assets
$8.8B
$72.8B
Debt / EquityLower = less leverage
1.53×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MKSI
MKSI
O
O
Q4 25
$418.0M
$434.8M
Q3 25
$413.0M
$417.2M
Q2 25
$498.0M
$800.4M
Q1 25
$407.0M
$319.0M
Q4 24
$420.0M
$445.0M
Q3 24
$439.0M
$397.0M
Q2 24
$506.0M
$442.8M
Q1 24
$1.0M
$680.2M
Total Debt
MKSI
MKSI
O
O
Q4 25
$4.2B
Q3 25
$4.3B
Q2 25
$4.4B
Q1 25
$4.4B
Q4 24
$4.5B
Q3 24
$4.8B
Q2 24
$4.8B
Q1 24
$4.7B
Stockholders' Equity
MKSI
MKSI
O
O
Q4 25
$2.7B
$39.4B
Q3 25
$2.6B
$39.1B
Q2 25
$2.6B
$39.2B
Q1 25
$2.4B
$39.0B
Q4 24
$2.3B
$38.8B
Q3 24
$2.4B
$38.5B
Q2 24
$2.2B
$38.6B
Q1 24
$2.4B
$39.0B
Total Assets
MKSI
MKSI
O
O
Q4 25
$8.8B
$72.8B
Q3 25
$8.8B
$71.3B
Q2 25
$8.8B
$71.4B
Q1 25
$8.6B
$69.8B
Q4 24
$8.6B
$68.8B
Q3 24
$9.0B
$68.5B
Q2 24
$8.9B
$68.1B
Q1 24
$8.9B
$68.3B
Debt / Equity
MKSI
MKSI
O
O
Q4 25
1.53×
Q3 25
1.64×
Q2 25
1.71×
Q1 25
1.87×
Q4 24
1.93×
Q3 24
1.98×
Q2 24
2.16×
Q1 24
1.94×

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
O
O
Operating Cash FlowLast quarter
$142.0M
$1.2B
Free Cash FlowOCF − Capex
$92.0M
$1.2B
FCF MarginFCF / Revenue
8.9%
77.6%
Capex IntensityCapex / Revenue
4.8%
3.3%
Cash ConversionOCF / Net Profit
1.33×
4.06×
TTM Free Cash FlowTrailing 4 quarters
$497.0M
$3.9B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MKSI
MKSI
O
O
Q4 25
$142.0M
$1.2B
Q3 25
$197.0M
$943.1M
Q2 25
$165.0M
$1.1B
Q1 25
$141.0M
$787.5M
Q4 24
$176.0M
$972.0M
Q3 24
$163.0M
$841.5M
Q2 24
$122.0M
$981.2M
Q1 24
$67.0M
$778.7M
Free Cash Flow
MKSI
MKSI
O
O
Q4 25
$92.0M
$1.2B
Q3 25
$146.0M
$909.9M
Q2 25
$136.0M
$1.0B
Q1 25
$123.0M
$764.6M
Q4 24
$125.0M
$935.8M
Q3 24
$141.0M
$807.9M
Q2 24
$95.0M
$939.2M
Q1 24
$49.0M
$769.0M
FCF Margin
MKSI
MKSI
O
O
Q4 25
8.9%
77.6%
Q3 25
14.8%
61.9%
Q2 25
14.0%
73.3%
Q1 25
13.1%
55.4%
Q4 24
13.4%
69.8%
Q3 24
15.7%
60.7%
Q2 24
10.7%
70.1%
Q1 24
5.6%
61.0%
Capex Intensity
MKSI
MKSI
O
O
Q4 25
4.8%
3.3%
Q3 25
5.2%
2.3%
Q2 25
3.0%
1.9%
Q1 25
1.9%
1.7%
Q4 24
5.5%
2.7%
Q3 24
2.5%
2.5%
Q2 24
3.0%
3.1%
Q1 24
2.1%
0.8%
Cash Conversion
MKSI
MKSI
O
O
Q4 25
1.33×
4.06×
Q3 25
2.66×
2.99×
Q2 25
2.66×
5.39×
Q1 25
2.71×
3.15×
Q4 24
1.96×
4.87×
Q3 24
2.63×
3.12×
Q2 24
5.30×
3.78×
Q1 24
4.47×
5.89×

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%

O
O

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

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