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Side-by-side financial comparison of CSG SYSTEMS INTERNATIONAL INC (CSGS) and ONTO INNOVATION INC. (ONTO). Click either name above to swap in a different company.

CSG SYSTEMS INTERNATIONAL INC is the larger business by last-quarter revenue ($323.1M vs $218.2M, roughly 1.5× ONTO INNOVATION INC.). ONTO INNOVATION INC. runs the higher net margin — 12.9% vs 2.2%, a 10.8% gap on every dollar of revenue. On growth, CSG SYSTEMS INTERNATIONAL INC posted the faster year-over-year revenue change (2.0% vs -13.5%). ONTO INNOVATION INC. produced more free cash flow last quarter ($82.0M vs $55.8M). Over the past eight quarters, CSG SYSTEMS INTERNATIONAL INC's revenue compounded faster (4.6% CAGR vs 2.6%).

CSG Holding Limited, formerly China Southern Glass Holding Limited, is the largest architectural glass manufacturer in China. It is involved in manufacturing and selling glass products, such as float glass, architectural glass, display glass, automotive glass, coated glass, mirrors, color filter glass, solar glass and conservation glass.

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.

CSGS vs ONTO — Head-to-Head

Bigger by revenue
CSGS
CSGS
1.5× larger
CSGS
$323.1M
$218.2M
ONTO
Growing faster (revenue YoY)
CSGS
CSGS
+15.5% gap
CSGS
2.0%
-13.5%
ONTO
Higher net margin
ONTO
ONTO
10.8% more per $
ONTO
12.9%
2.2%
CSGS
More free cash flow
ONTO
ONTO
$26.2M more FCF
ONTO
$82.0M
$55.8M
CSGS
Faster 2-yr revenue CAGR
CSGS
CSGS
Annualised
CSGS
4.6%
2.6%
ONTO

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
CSGS
CSGS
ONTO
ONTO
Revenue
$323.1M
$218.2M
Net Profit
$7.0M
$28.2M
Gross Margin
50.0%
50.7%
Operating Margin
9.0%
10.9%
Net Margin
2.2%
12.9%
Revenue YoY
2.0%
-13.5%
Net Profit YoY
-79.7%
-46.8%
EPS (diluted)
$0.24
$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
CSGS
CSGS
ONTO
ONTO
Q4 25
$323.1M
Q3 25
$303.6M
$218.2M
Q2 25
$297.1M
$253.6M
Q1 25
$299.5M
$266.6M
Q4 24
$316.7M
$263.9M
Q3 24
$295.1M
$252.2M
Q2 24
$290.3M
$242.3M
Q1 24
$295.1M
$228.8M
Net Profit
CSGS
CSGS
ONTO
ONTO
Q4 25
$7.0M
Q3 25
$20.5M
$28.2M
Q2 25
$12.3M
$33.9M
Q1 25
$16.1M
$64.1M
Q4 24
$34.5M
$48.8M
Q3 24
$19.1M
$53.1M
Q2 24
$13.8M
$52.9M
Q1 24
$19.5M
$46.9M
Gross Margin
CSGS
CSGS
ONTO
ONTO
Q4 25
50.0%
Q3 25
48.1%
50.7%
Q2 25
49.5%
48.2%
Q1 25
48.4%
53.7%
Q4 24
51.3%
50.2%
Q3 24
49.4%
54.1%
Q2 24
47.3%
52.9%
Q1 24
46.5%
51.7%
Operating Margin
CSGS
CSGS
ONTO
ONTO
Q4 25
9.0%
Q3 25
10.0%
10.9%
Q2 25
10.0%
12.7%
Q1 25
9.8%
23.7%
Q4 24
13.4%
16.1%
Q3 24
10.8%
21.0%
Q2 24
8.8%
20.2%
Q1 24
10.8%
18.7%
Net Margin
CSGS
CSGS
ONTO
ONTO
Q4 25
2.2%
Q3 25
6.7%
12.9%
Q2 25
4.1%
13.4%
Q1 25
5.4%
24.0%
Q4 24
10.9%
18.5%
Q3 24
6.5%
21.0%
Q2 24
4.8%
21.9%
Q1 24
6.6%
20.5%
EPS (diluted)
CSGS
CSGS
ONTO
ONTO
Q4 25
$0.24
Q3 25
$0.73
$0.57
Q2 25
$0.44
$0.69
Q1 25
$0.57
$1.30
Q4 24
$1.20
$0.98
Q3 24
$0.67
$1.07
Q2 24
$0.48
$1.07
Q1 24
$0.68
$0.94

Balance Sheet & Financial Strength

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

Metric
CSGS
CSGS
ONTO
ONTO
Cash + ST InvestmentsLiquidity on hand
$180.0M
$603.1M
Total DebtLower is stronger
$539.5M
Stockholders' EquityBook value
$283.7M
$2.0B
Total Assets
$1.5B
$2.2B
Debt / EquityLower = less leverage
1.90×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSGS
CSGS
ONTO
ONTO
Q4 25
$180.0M
Q3 25
$158.4M
$603.1M
Q2 25
$145.9M
$217.5M
Q1 25
$136.0M
$203.7M
Q4 24
$161.8M
$212.9M
Q3 24
$118.4M
$188.7M
Q2 24
$110.4M
$172.6M
Q1 24
$120.8M
$190.9M
Total Debt
CSGS
CSGS
ONTO
ONTO
Q4 25
$539.5M
Q3 25
$538.6M
Q2 25
$537.8M
Q1 25
$537.6M
Q4 24
$538.5M
Q3 24
$539.5M
Q2 24
$540.5M
Q1 24
$541.5M
Stockholders' Equity
CSGS
CSGS
ONTO
ONTO
Q4 25
$283.7M
Q3 25
$289.5M
$2.0B
Q2 25
$290.7M
$2.0B
Q1 25
$283.1M
$1.9B
Q4 24
$282.6M
$1.9B
Q3 24
$288.4M
$1.9B
Q2 24
$273.3M
$1.8B
Q1 24
$269.3M
$1.8B
Total Assets
CSGS
CSGS
ONTO
ONTO
Q4 25
$1.5B
Q3 25
$1.5B
$2.2B
Q2 25
$1.4B
$2.1B
Q1 25
$1.4B
$2.1B
Q4 24
$1.5B
$2.1B
Q3 24
$1.4B
$2.1B
Q2 24
$1.4B
$2.0B
Q1 24
$1.3B
$2.0B
Debt / Equity
CSGS
CSGS
ONTO
ONTO
Q4 25
1.90×
Q3 25
1.86×
Q2 25
1.85×
Q1 25
1.90×
Q4 24
1.91×
Q3 24
1.87×
Q2 24
1.98×
Q1 24
2.01×

Cash Flow & Capital Efficiency

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

Metric
CSGS
CSGS
ONTO
ONTO
Operating Cash FlowLast quarter
$59.2M
$83.4M
Free Cash FlowOCF − Capex
$55.8M
$82.0M
FCF MarginFCF / Revenue
17.3%
37.6%
Capex IntensityCapex / Revenue
1.1%
0.6%
Cash ConversionOCF / Net Profit
8.46×
2.95×
TTM Free Cash FlowTrailing 4 quarters
$141.4M
$261.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSGS
CSGS
ONTO
ONTO
Q4 25
$59.2M
Q3 25
$47.9M
$83.4M
Q2 25
$37.3M
$57.9M
Q1 25
$11.5M
$92.0M
Q4 24
$82.5M
$56.0M
Q3 24
$39.5M
$67.2M
Q2 24
$43.1M
$65.3M
Q1 24
$-29.4M
$57.1M
Free Cash Flow
CSGS
CSGS
ONTO
ONTO
Q4 25
$55.8M
Q3 25
$43.9M
$82.0M
Q2 25
$34.6M
$44.2M
Q1 25
$7.1M
$83.7M
Q4 24
$76.6M
$51.4M
Q3 24
$32.0M
$59.2M
Q2 24
$38.8M
$53.0M
Q1 24
$-34.1M
$50.2M
FCF Margin
CSGS
CSGS
ONTO
ONTO
Q4 25
17.3%
Q3 25
14.5%
37.6%
Q2 25
11.6%
17.4%
Q1 25
2.4%
31.4%
Q4 24
24.2%
19.5%
Q3 24
10.8%
23.5%
Q2 24
13.4%
21.9%
Q1 24
-11.6%
21.9%
Capex Intensity
CSGS
CSGS
ONTO
ONTO
Q4 25
1.1%
Q3 25
1.3%
0.6%
Q2 25
0.9%
5.4%
Q1 25
1.5%
3.1%
Q4 24
1.9%
1.8%
Q3 24
2.5%
3.2%
Q2 24
1.5%
5.1%
Q1 24
1.6%
3.0%
Cash Conversion
CSGS
CSGS
ONTO
ONTO
Q4 25
8.46×
Q3 25
2.34×
2.95×
Q2 25
3.04×
1.71×
Q1 25
0.71×
1.44×
Q4 24
2.39×
1.15×
Q3 24
2.07×
1.27×
Q2 24
3.12×
1.23×
Q1 24
-1.51×
1.22×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CSGS
CSGS

Software As A Service And Related Solutions$287.2M89%
License And Service$22.6M7%
Maintenance$13.3M4%

ONTO
ONTO

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

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