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Side-by-side financial comparison of ESCO TECHNOLOGIES INC (ESE) and ONTO INNOVATION INC. (ONTO). Click either name above to swap in a different company.

ESCO TECHNOLOGIES INC is the larger business by last-quarter revenue ($289.7M vs $218.2M, roughly 1.3× ONTO INNOVATION INC.). ONTO INNOVATION INC. runs the higher net margin — 12.9% vs 9.9%, a 3.0% gap on every dollar of revenue. On growth, ESCO TECHNOLOGIES INC posted the faster year-over-year revenue change (17.3% vs -13.5%). ONTO INNOVATION INC. produced more free cash flow last quarter ($82.0M vs $63.0M). Over the past eight quarters, ESCO TECHNOLOGIES INC's revenue compounded faster (7.8% CAGR vs 2.6%).

Esco is a Singaporean brand that develops, manufactures, and sells products and services for laboratories.

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.

ESE vs ONTO — Head-to-Head

Bigger by revenue
ESE
ESE
1.3× larger
ESE
$289.7M
$218.2M
ONTO
Growing faster (revenue YoY)
ESE
ESE
+30.7% gap
ESE
17.3%
-13.5%
ONTO
Higher net margin
ONTO
ONTO
3.0% more per $
ONTO
12.9%
9.9%
ESE
More free cash flow
ONTO
ONTO
$19.1M more FCF
ONTO
$82.0M
$63.0M
ESE
Faster 2-yr revenue CAGR
ESE
ESE
Annualised
ESE
7.8%
2.6%
ONTO

Income Statement — Q1 FY2026 vs Q3 FY2025

Metric
ESE
ESE
ONTO
ONTO
Revenue
$289.7M
$218.2M
Net Profit
$28.7M
$28.2M
Gross Margin
41.4%
50.7%
Operating Margin
13.2%
10.9%
Net Margin
9.9%
12.9%
Revenue YoY
17.3%
-13.5%
Net Profit YoY
22.2%
-46.8%
EPS (diluted)
$1.11
$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
ESE
ESE
ONTO
ONTO
Q4 25
$289.7M
Q3 25
$286.5M
$218.2M
Q2 25
$296.3M
$253.6M
Q1 25
$265.5M
$266.6M
Q4 24
$247.0M
$263.9M
Q3 24
$298.5M
$252.2M
Q2 24
$260.8M
$242.3M
Q1 24
$249.1M
$228.8M
Net Profit
ESE
ESE
ONTO
ONTO
Q4 25
$28.7M
Q3 25
$218.7M
$28.2M
Q2 25
$26.1M
$33.9M
Q1 25
$31.0M
$64.1M
Q4 24
$23.5M
$48.8M
Q3 24
$34.3M
$53.1M
Q2 24
$29.2M
$52.9M
Q1 24
$23.2M
$46.9M
Gross Margin
ESE
ESE
ONTO
ONTO
Q4 25
41.4%
Q3 25
45.9%
50.7%
Q2 25
41.2%
48.2%
Q1 25
41.1%
53.7%
Q4 24
39.8%
50.2%
Q3 24
40.1%
54.1%
Q2 24
39.6%
52.9%
Q1 24
38.8%
51.7%
Operating Margin
ESE
ESE
ONTO
ONTO
Q4 25
13.2%
Q3 25
17.2%
10.9%
Q2 25
11.2%
12.7%
Q1 25
15.3%
23.7%
Q4 24
11.4%
16.1%
Q3 24
14.8%
21.0%
Q2 24
14.3%
20.2%
Q1 24
11.7%
18.7%
Net Margin
ESE
ESE
ONTO
ONTO
Q4 25
9.9%
Q3 25
76.3%
12.9%
Q2 25
8.8%
13.4%
Q1 25
11.7%
24.0%
Q4 24
9.5%
18.5%
Q3 24
11.5%
21.0%
Q2 24
11.2%
21.9%
Q1 24
9.3%
20.5%
EPS (diluted)
ESE
ESE
ONTO
ONTO
Q4 25
$1.11
Q3 25
$8.43
$0.57
Q2 25
$1.01
$0.69
Q1 25
$1.20
$1.30
Q4 24
$0.91
$0.98
Q3 24
$1.32
$1.07
Q2 24
$1.13
$1.07
Q1 24
$0.90
$0.94

Balance Sheet & Financial Strength

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

Metric
ESE
ESE
ONTO
ONTO
Cash + ST InvestmentsLiquidity on hand
$103.8M
$603.1M
Total DebtLower is stronger
$145.5M
Stockholders' EquityBook value
$1.6B
$2.0B
Total Assets
$2.4B
$2.2B
Debt / EquityLower = less leverage
0.09×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ESE
ESE
ONTO
ONTO
Q4 25
$103.8M
Q3 25
$101.3M
$603.1M
Q2 25
$78.7M
$217.5M
Q1 25
$57.4M
$203.7M
Q4 24
$71.3M
$212.9M
Q3 24
$66.0M
$188.7M
Q2 24
$63.0M
$172.6M
Q1 24
$59.4M
$190.9M
Total Debt
ESE
ESE
ONTO
ONTO
Q4 25
$145.5M
Q3 25
$186.0M
Q2 25
$525.0M
Q1 25
$88.0M
Q4 24
$112.0M
Q3 24
$122.0M
Q2 24
$173.0M
Q1 24
$191.0M
Stockholders' Equity
ESE
ESE
ONTO
ONTO
Q4 25
$1.6B
Q3 25
$1.5B
$2.0B
Q2 25
$1.3B
$2.0B
Q1 25
$1.3B
$1.9B
Q4 24
$1.2B
$1.9B
Q3 24
$1.2B
$1.9B
Q2 24
$1.2B
$1.8B
Q1 24
$1.2B
$1.8B
Total Assets
ESE
ESE
ONTO
ONTO
Q4 25
$2.4B
Q3 25
$2.4B
$2.2B
Q2 25
$2.5B
$2.1B
Q1 25
$1.8B
$2.1B
Q4 24
$1.8B
$2.1B
Q3 24
$1.8B
$2.1B
Q2 24
$1.8B
$2.0B
Q1 24
$1.8B
$2.0B
Debt / Equity
ESE
ESE
ONTO
ONTO
Q4 25
0.09×
Q3 25
0.12×
Q2 25
0.40×
Q1 25
0.07×
Q4 24
0.09×
Q3 24
0.10×
Q2 24
0.14×
Q1 24
0.16×

Cash Flow & Capital Efficiency

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

Metric
ESE
ESE
ONTO
ONTO
Operating Cash FlowLast quarter
$68.9M
$83.4M
Free Cash FlowOCF − Capex
$63.0M
$82.0M
FCF MarginFCF / Revenue
21.7%
37.6%
Capex IntensityCapex / Revenue
2.0%
0.6%
Cash ConversionOCF / Net Profit
2.40×
2.95×
TTM Free Cash FlowTrailing 4 quarters
$239.6M
$261.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ESE
ESE
ONTO
ONTO
Q4 25
$68.9M
Q3 25
$109.9M
$83.4M
Q2 25
$73.7M
$57.9M
Q1 25
$24.1M
$92.0M
Q4 24
$34.2M
$56.0M
Q3 24
$72.1M
$67.2M
Q2 24
$36.2M
$65.3M
Q1 24
$10.5M
$57.1M
Free Cash Flow
ESE
ESE
ONTO
ONTO
Q4 25
$63.0M
Q3 25
$97.8M
$82.0M
Q2 25
$64.9M
$44.2M
Q1 25
$14.0M
$83.7M
Q4 24
$29.0M
$51.4M
Q3 24
$60.9M
$59.2M
Q2 24
$27.6M
$53.0M
Q1 24
$2.0M
$50.2M
FCF Margin
ESE
ESE
ONTO
ONTO
Q4 25
21.7%
Q3 25
34.1%
37.6%
Q2 25
21.9%
17.4%
Q1 25
5.3%
31.4%
Q4 24
11.7%
19.5%
Q3 24
20.4%
23.5%
Q2 24
10.6%
21.9%
Q1 24
0.8%
21.9%
Capex Intensity
ESE
ESE
ONTO
ONTO
Q4 25
2.0%
Q3 25
4.2%
0.6%
Q2 25
3.0%
5.4%
Q1 25
3.8%
3.1%
Q4 24
2.1%
1.8%
Q3 24
3.8%
3.2%
Q2 24
3.3%
5.1%
Q1 24
3.4%
3.0%
Cash Conversion
ESE
ESE
ONTO
ONTO
Q4 25
2.40×
Q3 25
0.50×
2.95×
Q2 25
2.83×
1.71×
Q1 25
0.78×
1.44×
Q4 24
1.46×
1.15×
Q3 24
2.10×
1.27×
Q2 24
1.24×
1.23×
Q1 24
0.45×
1.22×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ESE
ESE

US Government$98.0M34%
Utility Solutions Group$87.5M30%
RF Shielding And Test$58.3M20%
Commercial$45.8M16%
Related Party$1.3M0%

ONTO
ONTO

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

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