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Side-by-side financial comparison of Koppers Holdings Inc. (KOP) and ONTO INNOVATION INC. (ONTO). Click either name above to swap in a different company.

Koppers Holdings Inc. is the larger business by last-quarter revenue ($432.7M vs $218.2M, roughly 2.0× ONTO INNOVATION INC.). ONTO INNOVATION INC. runs the higher net margin — 12.9% vs 6.9%, a 6.1% gap on every dollar of revenue. On growth, Koppers Holdings Inc. posted the faster year-over-year revenue change (-9.3% vs -13.5%). ONTO INNOVATION INC. produced more free cash flow last quarter ($82.0M vs $28.5M). Over the past eight quarters, ONTO INNOVATION INC.'s revenue compounded faster (2.6% CAGR vs -6.7%).

Koppers is a global chemical and materials company based in Pittsburgh, Pennsylvania, United States. Its headquarters is an art-deco 1920s skyscraper, the Koppers Tower.

Onto Innovation Inc. is an American semiconductor company formed in 2019 from the merger of Rudolph Technologies, Inc. and Nanometrics Incorporated. It is a provider of process and process control equipment and software for microelectronic manufacturing industries.

KOP vs ONTO — Head-to-Head

Bigger by revenue
KOP
KOP
2.0× larger
KOP
$432.7M
$218.2M
ONTO
Growing faster (revenue YoY)
KOP
KOP
+4.2% gap
KOP
-9.3%
-13.5%
ONTO
Higher net margin
ONTO
ONTO
6.1% more per $
ONTO
12.9%
6.9%
KOP
More free cash flow
ONTO
ONTO
$53.5M more FCF
ONTO
$82.0M
$28.5M
KOP
Faster 2-yr revenue CAGR
ONTO
ONTO
Annualised
ONTO
2.6%
-6.7%
KOP

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
KOP
KOP
ONTO
ONTO
Revenue
$432.7M
$218.2M
Net Profit
$29.7M
$28.2M
Gross Margin
25.6%
50.7%
Operating Margin
11.5%
10.9%
Net Margin
6.9%
12.9%
Revenue YoY
-9.3%
-13.5%
Net Profit YoY
391.2%
-46.8%
EPS (diluted)
$1.44
$0.57

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
KOP
KOP
ONTO
ONTO
Q4 25
$432.7M
Q3 25
$485.3M
$218.2M
Q2 25
$504.8M
$253.6M
Q1 25
$456.5M
$266.6M
Q4 24
$477.0M
$263.9M
Q3 24
$554.3M
$252.2M
Q2 24
$563.2M
$242.3M
Q1 24
$497.6M
$228.8M
Net Profit
KOP
KOP
ONTO
ONTO
Q4 25
$29.7M
Q3 25
$23.8M
$28.2M
Q2 25
$16.4M
$33.9M
Q1 25
$-13.9M
$64.1M
Q4 24
$-10.2M
$48.8M
Q3 24
$22.8M
$53.1M
Q2 24
$26.8M
$52.9M
Q1 24
$13.0M
$46.9M
Gross Margin
KOP
KOP
ONTO
ONTO
Q4 25
25.6%
Q3 25
24.1%
50.7%
Q2 25
22.6%
48.2%
Q1 25
23.2%
53.7%
Q4 24
17.5%
50.2%
Q3 24
21.9%
54.1%
Q2 24
21.6%
52.9%
Q1 24
19.3%
51.7%
Operating Margin
KOP
KOP
ONTO
ONTO
Q4 25
11.5%
Q3 25
10.7%
10.9%
Q2 25
7.7%
12.7%
Q1 25
5.9%
23.7%
Q4 24
1.3%
16.1%
Q3 24
9.0%
21.0%
Q2 24
10.2%
20.2%
Q1 24
7.0%
18.7%
Net Margin
KOP
KOP
ONTO
ONTO
Q4 25
6.9%
Q3 25
4.9%
12.9%
Q2 25
3.2%
13.4%
Q1 25
-3.0%
24.0%
Q4 24
-2.1%
18.5%
Q3 24
4.1%
21.0%
Q2 24
4.8%
21.9%
Q1 24
2.6%
20.5%
EPS (diluted)
KOP
KOP
ONTO
ONTO
Q4 25
$1.44
Q3 25
$1.17
$0.57
Q2 25
$0.81
$0.69
Q1 25
$-0.68
$1.30
Q4 24
$-0.47
$0.98
Q3 24
$1.09
$1.07
Q2 24
$1.25
$1.07
Q1 24
$0.59
$0.94

Balance Sheet & Financial Strength

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

Metric
KOP
KOP
ONTO
ONTO
Cash + ST InvestmentsLiquidity on hand
$603.1M
Total DebtLower is stronger
$928.3M
Stockholders' EquityBook value
$574.0M
$2.0B
Total Assets
$1.9B
$2.2B
Debt / EquityLower = less leverage
1.62×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
KOP
KOP
ONTO
ONTO
Q4 25
Q3 25
$603.1M
Q2 25
$217.5M
Q1 25
$203.7M
Q4 24
$212.9M
Q3 24
$188.7M
Q2 24
$172.6M
Q1 24
$190.9M
Total Debt
KOP
KOP
ONTO
ONTO
Q4 25
$928.3M
Q3 25
$932.9M
Q2 25
$977.5M
Q1 25
$989.0M
Q4 24
$939.5M
Q3 24
$989.4M
Q2 24
$1.0B
Q1 24
$877.6M
Stockholders' Equity
KOP
KOP
ONTO
ONTO
Q4 25
$574.0M
Q3 25
$545.6M
$2.0B
Q2 25
$526.8M
$2.0B
Q1 25
$498.0M
$1.9B
Q4 24
$488.7M
$1.9B
Q3 24
$532.3M
$1.9B
Q2 24
$509.2M
$1.8B
Q1 24
$505.8M
$1.8B
Total Assets
KOP
KOP
ONTO
ONTO
Q4 25
$1.9B
Q3 25
$1.9B
$2.2B
Q2 25
$1.9B
$2.1B
Q1 25
$1.9B
$2.1B
Q4 24
$1.9B
$2.1B
Q3 24
$2.0B
$2.1B
Q2 24
$1.9B
$2.0B
Q1 24
$1.8B
$2.0B
Debt / Equity
KOP
KOP
ONTO
ONTO
Q4 25
1.62×
Q3 25
1.71×
Q2 25
1.86×
Q1 25
1.99×
Q4 24
1.92×
Q3 24
1.86×
Q2 24
1.97×
Q1 24
1.74×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
KOP
KOP
ONTO
ONTO
Operating Cash FlowLast quarter
$45.1M
$83.4M
Free Cash FlowOCF − Capex
$28.5M
$82.0M
FCF MarginFCF / Revenue
6.6%
37.6%
Capex IntensityCapex / Revenue
3.8%
0.6%
Cash ConversionOCF / Net Profit
1.52×
2.95×
TTM Free Cash FlowTrailing 4 quarters
$67.5M
$261.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
KOP
KOP
ONTO
ONTO
Q4 25
$45.1M
Q3 25
$49.6M
$83.4M
Q2 25
$50.5M
$57.9M
Q1 25
$-22.7M
$92.0M
Q4 24
$74.7M
$56.0M
Q3 24
$29.8M
$67.2M
Q2 24
$27.2M
$65.3M
Q1 24
$-12.3M
$57.1M
Free Cash Flow
KOP
KOP
ONTO
ONTO
Q4 25
$28.5M
Q3 25
$37.6M
$82.0M
Q2 25
$38.4M
$44.2M
Q1 25
$-37.0M
$83.7M
Q4 24
$56.1M
$51.4M
Q3 24
$14.4M
$59.2M
Q2 24
$10.1M
$53.0M
Q1 24
$-38.6M
$50.2M
FCF Margin
KOP
KOP
ONTO
ONTO
Q4 25
6.6%
Q3 25
7.7%
37.6%
Q2 25
7.6%
17.4%
Q1 25
-8.1%
31.4%
Q4 24
11.8%
19.5%
Q3 24
2.6%
23.5%
Q2 24
1.8%
21.9%
Q1 24
-7.8%
21.9%
Capex Intensity
KOP
KOP
ONTO
ONTO
Q4 25
3.8%
Q3 25
2.5%
0.6%
Q2 25
2.4%
5.4%
Q1 25
3.1%
3.1%
Q4 24
3.9%
1.8%
Q3 24
2.8%
3.2%
Q2 24
3.0%
5.1%
Q1 24
5.3%
3.0%
Cash Conversion
KOP
KOP
ONTO
ONTO
Q4 25
1.52×
Q3 25
2.08×
2.95×
Q2 25
3.08×
1.71×
Q1 25
1.44×
Q4 24
1.15×
Q3 24
1.31×
1.27×
Q2 24
1.01×
1.23×
Q1 24
-0.95×
1.22×

Financial Flow Comparison

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

Revenue Breakdown by Segment

KOP
KOP

Other$127.8M30%
Railroad Treated Products$119.0M28%
Utility Poles$79.8M18%
Pitch And Related Products$74.1M17%
Carbon Black Feedstock And Distillates$14.4M3%
Railroad Infrastructure Products And Services$9.9M2%
Phthalic Anhydride Naphthalene And Other Chemicals$7.7M2%

ONTO
ONTO

Systems And Software Revenue$173.8M80%
Parts Revenue$23.9M11%
Service Revenue$20.5M9%

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