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

ONTO INNOVATION INC. is the larger business by last-quarter revenue ($218.2M vs $451.0K, roughly 483.8× Quantum-Si Inc). ONTO INNOVATION INC. runs the higher net margin — 12.9% vs -3904.9%, a 3917.8% gap on every dollar of revenue. On growth, ONTO INNOVATION INC. posted the faster year-over-year revenue change (-13.5% vs -62.2%). ONTO INNOVATION INC. produced more free cash flow last quarter ($82.0M vs $-16.4M). Over the past eight quarters, ONTO INNOVATION INC.'s revenue compounded faster (2.6% CAGR vs -0.7%).

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.

Silicon Quantum Computing Pty Ltd (SQC) is a Sydney, Australia-based quantum computing company.

ONTO vs QSI — Head-to-Head

Bigger by revenue
ONTO
ONTO
483.8× larger
ONTO
$218.2M
$451.0K
QSI
Growing faster (revenue YoY)
ONTO
ONTO
+48.7% gap
ONTO
-13.5%
-62.2%
QSI
Higher net margin
ONTO
ONTO
3917.8% more per $
ONTO
12.9%
-3904.9%
QSI
More free cash flow
ONTO
ONTO
$98.4M more FCF
ONTO
$82.0M
$-16.4M
QSI
Faster 2-yr revenue CAGR
ONTO
ONTO
Annualised
ONTO
2.6%
-0.7%
QSI

Income Statement — Q3 2025 vs Q4 2025

Metric
ONTO
ONTO
QSI
QSI
Revenue
$218.2M
$451.0K
Net Profit
$28.2M
$-17.6M
Gross Margin
50.7%
27.1%
Operating Margin
10.9%
-4677.2%
Net Margin
12.9%
-3904.9%
Revenue YoY
-13.5%
-62.2%
Net Profit YoY
-46.8%
46.8%
EPS (diluted)
$0.57
$-0.07

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
ONTO
ONTO
QSI
QSI
Q4 25
$451.0K
Q3 25
$218.2M
$552.0K
Q2 25
$253.6M
$591.0K
Q1 25
$266.6M
$842.0K
Q4 24
$263.9M
$1.2M
Q3 24
$252.2M
$787.0K
Q2 24
$242.3M
$622.0K
Q1 24
$228.8M
$457.0K
Net Profit
ONTO
ONTO
QSI
QSI
Q4 25
$-17.6M
Q3 25
$28.2M
$-35.7M
Q2 25
$33.9M
$-28.8M
Q1 25
$64.1M
$-19.2M
Q4 24
$48.8M
$-33.1M
Q3 24
$53.1M
$-25.3M
Q2 24
$52.9M
$-23.1M
Q1 24
$46.9M
$-19.5M
Gross Margin
ONTO
ONTO
QSI
QSI
Q4 25
27.1%
Q3 25
50.7%
35.1%
Q2 25
48.2%
59.4%
Q1 25
53.7%
57.7%
Q4 24
50.2%
51.2%
Q3 24
54.1%
46.6%
Q2 24
52.9%
56.9%
Q1 24
51.7%
58.9%
Operating Margin
ONTO
ONTO
QSI
QSI
Q4 25
-4677.2%
Q3 25
10.9%
-7205.3%
Q2 25
12.7%
-5096.4%
Q1 25
23.7%
-2982.4%
Q4 24
16.1%
-2573.6%
Q3 24
21.0%
-3569.0%
Q2 24
20.2%
-4252.6%
Q1 24
18.7%
-5111.6%
Net Margin
ONTO
ONTO
QSI
QSI
Q4 25
-3904.9%
Q3 25
12.9%
-6467.9%
Q2 25
13.4%
-4879.2%
Q1 25
24.0%
-2279.0%
Q4 24
18.5%
-2778.6%
Q3 24
21.0%
-3216.4%
Q2 24
21.9%
-3713.7%
Q1 24
20.5%
-4261.3%
EPS (diluted)
ONTO
ONTO
QSI
QSI
Q4 25
$-0.07
Q3 25
$0.57
$-0.17
Q2 25
$0.69
$-0.16
Q1 25
$1.30
$-0.11
Q4 24
$0.98
$-0.23
Q3 24
$1.07
$-0.18
Q2 24
$1.07
$-0.16
Q1 24
$0.94
$-0.14

Balance Sheet & Financial Strength

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

Metric
ONTO
ONTO
QSI
QSI
Cash + ST InvestmentsLiquidity on hand
$603.1M
$21.6M
Total DebtLower is stronger
Stockholders' EquityBook value
$2.0B
$220.2M
Total Assets
$2.2B
$245.6M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ONTO
ONTO
QSI
QSI
Q4 25
$21.6M
Q3 25
$603.1M
$30.9M
Q2 25
$217.5M
$22.2M
Q1 25
$203.7M
$37.3M
Q4 24
$212.9M
$49.2M
Q3 24
$188.7M
$42.3M
Q2 24
$172.6M
$59.6M
Q1 24
$190.9M
$53.2M
Stockholders' Equity
ONTO
ONTO
QSI
QSI
Q4 25
$220.2M
Q3 25
$2.0B
$235.2M
Q2 25
$2.0B
$221.0M
Q1 25
$1.9B
$246.9M
Q4 24
$1.9B
$215.4M
Q3 24
$1.9B
$210.5M
Q2 24
$1.8B
$233.3M
Q1 24
$1.8B
$253.8M
Total Assets
ONTO
ONTO
QSI
QSI
Q4 25
$245.6M
Q3 25
$2.2B
$260.1M
Q2 25
$2.1B
$254.4M
Q1 25
$2.1B
$271.2M
Q4 24
$2.1B
$247.9M
Q3 24
$2.1B
$236.5M
Q2 24
$2.0B
$256.7M
Q1 24
$2.0B
$275.6M

Cash Flow & Capital Efficiency

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

Metric
ONTO
ONTO
QSI
QSI
Operating Cash FlowLast quarter
$83.4M
$-16.3M
Free Cash FlowOCF − Capex
$82.0M
$-16.4M
FCF MarginFCF / Revenue
37.6%
-3628.4%
Capex IntensityCapex / Revenue
0.6%
3.8%
Cash ConversionOCF / Net Profit
2.95×
TTM Free Cash FlowTrailing 4 quarters
$261.3M
$-97.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ONTO
ONTO
QSI
QSI
Q4 25
$-16.3M
Q3 25
$83.4M
$-32.0M
Q2 25
$57.9M
$-20.2M
Q1 25
$92.0M
$-26.2M
Q4 24
$56.0M
$-22.9M
Q3 24
$67.2M
$-23.2M
Q2 24
$65.3M
$-18.6M
Q1 24
$57.1M
$-23.2M
Free Cash Flow
ONTO
ONTO
QSI
QSI
Q4 25
$-16.4M
Q3 25
$82.0M
$-32.9M
Q2 25
$44.2M
$-20.5M
Q1 25
$83.7M
$-27.5M
Q4 24
$51.4M
$-24.3M
Q3 24
$59.2M
$-24.1M
Q2 24
$53.0M
$-19.7M
Q1 24
$50.2M
$-24.3M
FCF Margin
ONTO
ONTO
QSI
QSI
Q4 25
-3628.4%
Q3 25
37.6%
-5963.6%
Q2 25
17.4%
-3472.8%
Q1 25
31.4%
-3261.4%
Q4 24
19.5%
-2039.9%
Q3 24
23.5%
-3065.8%
Q2 24
21.9%
-3164.0%
Q1 24
21.9%
-5307.2%
Capex Intensity
ONTO
ONTO
QSI
QSI
Q4 25
3.8%
Q3 25
0.6%
163.0%
Q2 25
5.4%
55.3%
Q1 25
3.1%
155.2%
Q4 24
1.8%
120.4%
Q3 24
3.2%
123.9%
Q2 24
5.1%
181.2%
Q1 24
3.0%
228.9%
Cash Conversion
ONTO
ONTO
QSI
QSI
Q4 25
Q3 25
2.95×
Q2 25
1.71×
Q1 25
1.44×
Q4 24
1.15×
Q3 24
1.27×
Q2 24
1.23×
Q1 24
1.22×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ONTO
ONTO

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

QSI
QSI

Segment breakdown not available.

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