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Side-by-side financial comparison of ClearSign Technologies Corp (CLIR) and MKS INC (MKSI). Click either name above to swap in a different company.

MKS INC is the larger business by last-quarter revenue ($1.0B vs $3.7M, roughly 281.7× ClearSign Technologies Corp). MKS INC runs the higher net margin — 10.3% vs -8.5%, a 18.8% gap on every dollar of revenue. On growth, ClearSign Technologies Corp posted the faster year-over-year revenue change (522.2% vs 10.6%). Over the past eight quarters, ClearSign Technologies Corp's revenue compounded faster (82.5% CAGR vs 9.1%).

ClearSign Technologies Corporation (ClearSign) is a United States-based company that develops emission-control technology.

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.

CLIR vs MKSI — Head-to-Head

Bigger by revenue
MKSI
MKSI
281.7× larger
MKSI
$1.0B
$3.7M
CLIR
Growing faster (revenue YoY)
CLIR
CLIR
+511.6% gap
CLIR
522.2%
10.6%
MKSI
Higher net margin
MKSI
MKSI
18.8% more per $
MKSI
10.3%
-8.5%
CLIR
Faster 2-yr revenue CAGR
CLIR
CLIR
Annualised
CLIR
82.5%
9.1%
MKSI

Income Statement — Q4 2025 vs Q4 2025

Metric
CLIR
CLIR
MKSI
MKSI
Revenue
$3.7M
$1.0B
Net Profit
$-311.0K
$107.0M
Gross Margin
21.9%
46.3%
Operating Margin
-22.5%
13.9%
Net Margin
-8.5%
10.3%
Revenue YoY
522.2%
10.6%
Net Profit YoY
73.3%
18.9%
EPS (diluted)
$-0.06
$1.58

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
CLIR
CLIR
MKSI
MKSI
Q4 25
$3.7M
$1.0B
Q3 25
$1.0M
$988.0M
Q2 25
$133.0K
$973.0M
Q1 25
$401.0K
$936.0M
Q4 24
$590.0K
$935.0M
Q3 24
$1.9M
$896.0M
Q2 24
$45.0K
$887.0M
Q1 24
$1.1M
$868.0M
Net Profit
CLIR
CLIR
MKSI
MKSI
Q4 25
$-311.0K
$107.0M
Q3 25
$-1.4M
$74.0M
Q2 25
$-1.7M
$62.0M
Q1 25
$-2.1M
$52.0M
Q4 24
$-1.2M
$90.0M
Q3 24
$-1.2M
$62.0M
Q2 24
$-1.9M
$23.0M
Q1 24
$-1.1M
$15.0M
Gross Margin
CLIR
CLIR
MKSI
MKSI
Q4 25
21.9%
46.3%
Q3 25
35.8%
46.7%
Q2 25
41.4%
46.6%
Q1 25
48.9%
47.4%
Q4 24
14.9%
47.3%
Q3 24
29.6%
48.2%
Q2 24
93.3%
47.2%
Q1 24
39.7%
47.8%
Operating Margin
CLIR
CLIR
MKSI
MKSI
Q4 25
-22.5%
13.9%
Q3 25
-170.1%
14.0%
Q2 25
-1382.0%
13.9%
Q1 25
-562.8%
11.9%
Q4 24
-282.4%
14.7%
Q3 24
-77.1%
14.3%
Q2 24
-4748.9%
14.3%
Q1 24
-113.6%
12.2%
Net Margin
CLIR
CLIR
MKSI
MKSI
Q4 25
-8.5%
10.3%
Q3 25
-138.9%
7.5%
Q2 25
-1263.2%
6.4%
Q1 25
-517.7%
5.6%
Q4 24
-197.3%
9.6%
Q3 24
-62.1%
6.9%
Q2 24
-4160.0%
2.6%
Q1 24
-100.5%
1.7%
EPS (diluted)
CLIR
CLIR
MKSI
MKSI
Q4 25
$-0.06
$1.58
Q3 25
$-0.26
$1.10
Q2 25
$-0.30
$0.92
Q1 25
$-0.37
$0.77
Q4 24
$-0.18
$1.34
Q3 24
$-0.20
$0.92
Q2 24
$-0.40
$0.33
Q1 24
$-0.30
$0.22

Balance Sheet & Financial Strength

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

Metric
CLIR
CLIR
MKSI
MKSI
Cash + ST InvestmentsLiquidity on hand
$9.2M
$418.0M
Total DebtLower is stronger
$4.2B
Stockholders' EquityBook value
$9.5M
$2.7B
Total Assets
$12.2M
$8.8B
Debt / EquityLower = less leverage
1.53×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLIR
CLIR
MKSI
MKSI
Q4 25
$9.2M
$418.0M
Q3 25
$10.5M
$413.0M
Q2 25
$12.3M
$498.0M
Q1 25
$12.9M
$407.0M
Q4 24
$14.0M
$420.0M
Q3 24
$14.5M
$439.0M
Q2 24
$16.0M
$506.0M
Q1 24
$4.6M
$1.0M
Total Debt
CLIR
CLIR
MKSI
MKSI
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
CLIR
CLIR
MKSI
MKSI
Q4 25
$9.5M
$2.7B
Q3 25
$9.1M
$2.6B
Q2 25
$10.4M
$2.6B
Q1 25
$12.0M
$2.4B
Q4 24
$13.8M
$2.3B
Q3 24
$14.8M
$2.4B
Q2 24
$15.9M
$2.2B
Q1 24
$4.5M
$2.4B
Total Assets
CLIR
CLIR
MKSI
MKSI
Q4 25
$12.2M
$8.8B
Q3 25
$12.7M
$8.8B
Q2 25
$14.2M
$8.8B
Q1 25
$14.5M
$8.6B
Q4 24
$16.3M
$8.6B
Q3 24
$17.1M
$9.0B
Q2 24
$17.8M
$8.9B
Q1 24
$6.6M
$8.9B
Debt / Equity
CLIR
CLIR
MKSI
MKSI
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
CLIR
CLIR
MKSI
MKSI
Operating Cash FlowLast quarter
$-1.3M
$142.0M
Free Cash FlowOCF − Capex
$92.0M
FCF MarginFCF / Revenue
8.9%
Capex IntensityCapex / Revenue
0.0%
4.8%
Cash ConversionOCF / Net Profit
1.33×
TTM Free Cash FlowTrailing 4 quarters
$497.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLIR
CLIR
MKSI
MKSI
Q4 25
$-1.3M
$142.0M
Q3 25
$-1.8M
$197.0M
Q2 25
$-511.0K
$165.0M
Q1 25
$-1.1M
$141.0M
Q4 24
$-415.0K
$176.0M
Q3 24
$-1.4M
$163.0M
Q2 24
$-1.5M
$122.0M
Q1 24
$-1.0M
$67.0M
Free Cash Flow
CLIR
CLIR
MKSI
MKSI
Q4 25
$92.0M
Q3 25
$146.0M
Q2 25
$136.0M
Q1 25
$-1.1M
$123.0M
Q4 24
$125.0M
Q3 24
$141.0M
Q2 24
$95.0M
Q1 24
$49.0M
FCF Margin
CLIR
CLIR
MKSI
MKSI
Q4 25
8.9%
Q3 25
14.8%
Q2 25
14.0%
Q1 25
-278.1%
13.1%
Q4 24
13.4%
Q3 24
15.7%
Q2 24
10.7%
Q1 24
5.6%
Capex Intensity
CLIR
CLIR
MKSI
MKSI
Q4 25
0.0%
4.8%
Q3 25
0.0%
5.2%
Q2 25
0.0%
3.0%
Q1 25
1.0%
1.9%
Q4 24
5.5%
Q3 24
0.0%
2.5%
Q2 24
3.0%
Q1 24
2.1%
Cash Conversion
CLIR
CLIR
MKSI
MKSI
Q4 25
1.33×
Q3 25
2.66×
Q2 25
2.66×
Q1 25
2.71×
Q4 24
1.96×
Q3 24
2.63×
Q2 24
5.30×
Q1 24
4.47×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CLIR
CLIR

Segment breakdown not available.

MKSI
MKSI

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

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