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Side-by-side financial comparison of CSG SYSTEMS INTERNATIONAL INC (CSGS) and Protagonist Therapeutics, Inc (PTGX). 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 $170.6M, roughly 1.9× Protagonist Therapeutics, Inc). Protagonist Therapeutics, Inc runs the higher net margin — 77.2% vs 2.2%, a 75.0% gap on every dollar of revenue. On growth, Protagonist Therapeutics, Inc posted the faster year-over-year revenue change (184.4% vs 2.0%). Protagonist Therapeutics, Inc produced more free cash flow last quarter ($182.8M vs $55.8M).

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.

Protagonist Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on discovering and developing novel peptide-based targeted therapies for unmet medical needs, primarily covering gastrointestinal disorders, inflammatory diseases and rare disease indications. Its lead product candidates target inflammatory bowel disease and other chronic immune-related conditions, with operations spanning global R&D and partnership collaborations.

CSGS vs PTGX — Head-to-Head

Bigger by revenue
CSGS
CSGS
1.9× larger
CSGS
$323.1M
$170.6M
PTGX
Growing faster (revenue YoY)
PTGX
PTGX
+182.4% gap
PTGX
184.4%
2.0%
CSGS
Higher net margin
PTGX
PTGX
75.0% more per $
PTGX
77.2%
2.2%
CSGS
More free cash flow
PTGX
PTGX
$127.0M more FCF
PTGX
$182.8M
$55.8M
CSGS

Income Statement — Q4 FY2025 vs Q4 FY2024

Metric
CSGS
CSGS
PTGX
PTGX
Revenue
$323.1M
$170.6M
Net Profit
$7.0M
$131.7M
Gross Margin
50.0%
Operating Margin
9.0%
74.3%
Net Margin
2.2%
77.2%
Revenue YoY
2.0%
184.4%
Net Profit YoY
-79.7%
381.7%
EPS (diluted)
$0.24
$2.01

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
PTGX
PTGX
Q4 25
$323.1M
Q3 25
$303.6M
Q2 25
$297.1M
Q1 25
$299.5M
Q4 24
$316.7M
$170.6M
Q3 24
$295.1M
Q2 24
$290.3M
Q1 24
$295.1M
$255.0M
Net Profit
CSGS
CSGS
PTGX
PTGX
Q4 25
$7.0M
Q3 25
$20.5M
Q2 25
$12.3M
Q1 25
$16.1M
Q4 24
$34.5M
$131.7M
Q3 24
$19.1M
Q2 24
$13.8M
Q1 24
$19.5M
$207.3M
Gross Margin
CSGS
CSGS
PTGX
PTGX
Q4 25
50.0%
Q3 25
48.1%
Q2 25
49.5%
Q1 25
48.4%
Q4 24
51.3%
Q3 24
49.4%
Q2 24
47.3%
Q1 24
46.5%
Operating Margin
CSGS
CSGS
PTGX
PTGX
Q4 25
9.0%
Q3 25
10.0%
Q2 25
10.0%
Q1 25
9.8%
Q4 24
13.4%
74.3%
Q3 24
10.8%
Q2 24
8.8%
Q1 24
10.8%
80.9%
Net Margin
CSGS
CSGS
PTGX
PTGX
Q4 25
2.2%
Q3 25
6.7%
Q2 25
4.1%
Q1 25
5.4%
Q4 24
10.9%
77.2%
Q3 24
6.5%
Q2 24
4.8%
Q1 24
6.6%
81.3%
EPS (diluted)
CSGS
CSGS
PTGX
PTGX
Q4 25
$0.24
Q3 25
$0.73
Q2 25
$0.44
Q1 25
$0.57
Q4 24
$1.20
$2.01
Q3 24
$0.67
Q2 24
$0.48
Q1 24
$0.68
$3.26

Balance Sheet & Financial Strength

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

Metric
CSGS
CSGS
PTGX
PTGX
Cash + ST InvestmentsLiquidity on hand
$180.0M
$418.9M
Total DebtLower is stronger
$539.5M
Stockholders' EquityBook value
$283.7M
$675.3M
Total Assets
$1.5B
$744.7M
Debt / EquityLower = less leverage
1.90×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSGS
CSGS
PTGX
PTGX
Q4 25
$180.0M
Q3 25
$158.4M
Q2 25
$145.9M
Q1 25
$136.0M
Q4 24
$161.8M
$418.9M
Q3 24
$118.4M
Q2 24
$110.4M
Q1 24
$120.8M
$322.6M
Total Debt
CSGS
CSGS
PTGX
PTGX
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
PTGX
PTGX
Q4 25
$283.7M
Q3 25
$289.5M
Q2 25
$290.7M
Q1 25
$283.1M
Q4 24
$282.6M
$675.3M
Q3 24
$288.4M
Q2 24
$273.3M
Q1 24
$269.3M
$560.4M
Total Assets
CSGS
CSGS
PTGX
PTGX
Q4 25
$1.5B
Q3 25
$1.5B
Q2 25
$1.4B
Q1 25
$1.4B
Q4 24
$1.5B
$744.7M
Q3 24
$1.4B
Q2 24
$1.4B
Q1 24
$1.3B
$629.3M
Debt / Equity
CSGS
CSGS
PTGX
PTGX
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
PTGX
PTGX
Operating Cash FlowLast quarter
$59.2M
$184.2M
Free Cash FlowOCF − Capex
$55.8M
$182.8M
FCF MarginFCF / Revenue
17.3%
107.1%
Capex IntensityCapex / Revenue
1.1%
0.8%
Cash ConversionOCF / Net Profit
8.46×
1.40×
TTM Free Cash FlowTrailing 4 quarters
$141.4M
$101.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSGS
CSGS
PTGX
PTGX
Q4 25
$59.2M
Q3 25
$47.9M
Q2 25
$37.3M
Q1 25
$11.5M
Q4 24
$82.5M
$184.2M
Q3 24
$39.5M
Q2 24
$43.1M
Q1 24
$-29.4M
$-27.4M
Free Cash Flow
CSGS
CSGS
PTGX
PTGX
Q4 25
$55.8M
Q3 25
$43.9M
Q2 25
$34.6M
Q1 25
$7.1M
Q4 24
$76.6M
$182.8M
Q3 24
$32.0M
Q2 24
$38.8M
Q1 24
$-34.1M
$-27.7M
FCF Margin
CSGS
CSGS
PTGX
PTGX
Q4 25
17.3%
Q3 25
14.5%
Q2 25
11.6%
Q1 25
2.4%
Q4 24
24.2%
107.1%
Q3 24
10.8%
Q2 24
13.4%
Q1 24
-11.6%
-10.9%
Capex Intensity
CSGS
CSGS
PTGX
PTGX
Q4 25
1.1%
Q3 25
1.3%
Q2 25
0.9%
Q1 25
1.5%
Q4 24
1.9%
0.8%
Q3 24
2.5%
Q2 24
1.5%
Q1 24
1.6%
0.1%
Cash Conversion
CSGS
CSGS
PTGX
PTGX
Q4 25
8.46×
Q3 25
2.34×
Q2 25
3.04×
Q1 25
0.71×
Q4 24
2.39×
1.40×
Q3 24
2.07×
Q2 24
3.12×
Q1 24
-1.51×
-0.13×

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%

PTGX
PTGX

Segment breakdown not available.

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