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Side-by-side financial comparison of QUALYS, INC. (QLYS) and Westlake Chemical Partners LP (WLKP). Click either name above to swap in a different company.

Westlake Chemical Partners LP is the larger business by last-quarter revenue ($323.0M vs $175.3M, roughly 1.8× QUALYS, INC.). QUALYS, INC. runs the higher net margin — 30.3% vs 4.5%, a 25.8% gap on every dollar of revenue. On growth, Westlake Chemical Partners LP posted the faster year-over-year revenue change (11.4% vs 10.1%). Westlake Chemical Partners LP produced more free cash flow last quarter ($111.5M vs $74.9M). Over the past eight quarters, QUALYS, INC.'s revenue compounded faster (9.6% CAGR vs 6.5%).

Qualys, Inc. is an American technology firm based in Foster City, California, specializing in cloud security, compliance and related services.

Westlake Chemical Partners LP is a petrochemical limited partnership that manufactures and markets basic products including ethylene, polyethylene, and styrene monomers. It operates mainly in North America, serving packaging, construction, consumer goods, and industrial manufacturing sectors.

QLYS vs WLKP — Head-to-Head

Bigger by revenue
WLKP
WLKP
1.8× larger
WLKP
$323.0M
$175.3M
QLYS
Growing faster (revenue YoY)
WLKP
WLKP
+1.3% gap
WLKP
11.4%
10.1%
QLYS
Higher net margin
QLYS
QLYS
25.8% more per $
QLYS
30.3%
4.5%
WLKP
More free cash flow
WLKP
WLKP
$36.6M more FCF
WLKP
$111.5M
$74.9M
QLYS
Faster 2-yr revenue CAGR
QLYS
QLYS
Annualised
QLYS
9.6%
6.5%
WLKP

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
QLYS
QLYS
WLKP
WLKP
Revenue
$175.3M
$323.0M
Net Profit
$53.1M
$14.5M
Gross Margin
83.4%
30.0%
Operating Margin
33.6%
27.8%
Net Margin
30.3%
4.5%
Revenue YoY
10.1%
11.4%
Net Profit YoY
20.9%
-3.0%
EPS (diluted)
$1.47

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
QLYS
QLYS
WLKP
WLKP
Q4 25
$175.3M
$323.0M
Q3 25
$169.9M
$308.9M
Q2 25
$164.1M
$297.1M
Q1 25
$159.9M
$237.6M
Q4 24
$159.2M
$290.1M
Q3 24
$153.9M
$277.0M
Q2 24
$148.7M
$284.2M
Q1 24
$145.8M
$284.7M
Net Profit
QLYS
QLYS
WLKP
WLKP
Q4 25
$53.1M
$14.5M
Q3 25
$50.3M
$14.7M
Q2 25
$47.3M
$14.6M
Q1 25
$47.5M
$4.9M
Q4 24
$44.0M
$15.0M
Q3 24
$46.2M
$18.1M
Q2 24
$43.8M
$14.4M
Q1 24
$39.7M
$14.8M
Gross Margin
QLYS
QLYS
WLKP
WLKP
Q4 25
83.4%
30.0%
Q3 25
83.6%
32.2%
Q2 25
82.4%
32.8%
Q1 25
81.9%
22.8%
Q4 24
81.8%
34.0%
Q3 24
81.3%
42.2%
Q2 24
82.2%
35.6%
Q1 24
81.3%
35.9%
Operating Margin
QLYS
QLYS
WLKP
WLKP
Q4 25
33.6%
27.8%
Q3 25
35.3%
29.8%
Q2 25
31.3%
30.7%
Q1 25
32.4%
19.6%
Q4 24
31.0%
31.7%
Q3 24
29.2%
39.6%
Q2 24
32.3%
32.9%
Q1 24
30.7%
33.4%
Net Margin
QLYS
QLYS
WLKP
WLKP
Q4 25
30.3%
4.5%
Q3 25
29.6%
4.7%
Q2 25
28.8%
4.9%
Q1 25
29.7%
2.1%
Q4 24
27.6%
5.2%
Q3 24
30.0%
6.5%
Q2 24
29.4%
5.1%
Q1 24
27.2%
5.2%
EPS (diluted)
QLYS
QLYS
WLKP
WLKP
Q4 25
$1.47
Q3 25
$1.39
Q2 25
$1.29
Q1 25
$1.29
Q4 24
$1.19
Q3 24
$1.24
Q2 24
$1.17
Q1 24
$1.05

Balance Sheet & Financial Strength

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

Metric
QLYS
QLYS
WLKP
WLKP
Cash + ST InvestmentsLiquidity on hand
$250.3M
$44.3M
Total DebtLower is stronger
Stockholders' EquityBook value
$561.2M
Total Assets
$1.1B
$1.3B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
QLYS
QLYS
WLKP
WLKP
Q4 25
$250.3M
$44.3M
Q3 25
$225.3M
$37.9M
Q2 25
$194.0M
$36.6M
Q1 25
$290.7M
$49.6M
Q4 24
$232.2M
$58.3M
Q3 24
$235.4M
$60.2M
Q2 24
$281.2M
$66.0M
Q1 24
$273.8M
$55.8M
Stockholders' Equity
QLYS
QLYS
WLKP
WLKP
Q4 25
$561.2M
Q3 25
$529.4M
Q2 25
$508.2M
Q1 25
$498.0M
Q4 24
$477.1M
Q3 24
$449.6M
Q2 24
$427.8M
Q1 24
$404.2M
Total Assets
QLYS
QLYS
WLKP
WLKP
Q4 25
$1.1B
$1.3B
Q3 25
$1.0B
$1.3B
Q2 25
$999.5M
$1.3B
Q1 25
$996.5M
$1.4B
Q4 24
$973.5M
$1.3B
Q3 24
$908.3M
$1.3B
Q2 24
$876.6M
$1.3B
Q1 24
$861.8M
$1.3B

Cash Flow & Capital Efficiency

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

Metric
QLYS
QLYS
WLKP
WLKP
Operating Cash FlowLast quarter
$75.7M
$120.4M
Free Cash FlowOCF − Capex
$74.9M
$111.5M
FCF MarginFCF / Revenue
42.8%
34.5%
Capex IntensityCapex / Revenue
0.4%
2.7%
Cash ConversionOCF / Net Profit
1.42×
8.28×
TTM Free Cash FlowTrailing 4 quarters
$304.4M
$201.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
QLYS
QLYS
WLKP
WLKP
Q4 25
$75.7M
$120.4M
Q3 25
$90.4M
$105.2M
Q2 25
$33.8M
$9.1M
Q1 25
$109.6M
$45.8M
Q4 24
$47.7M
$132.5M
Q3 24
$61.0M
$126.1M
Q2 24
$49.8M
$121.9M
Q1 24
$85.5M
$104.6M
Free Cash Flow
QLYS
QLYS
WLKP
WLKP
Q4 25
$74.9M
$111.5M
Q3 25
$89.5M
$75.6M
Q2 25
$32.4M
$-15.3M
Q1 25
$107.5M
$29.8M
Q4 24
$41.9M
$119.0M
Q3 24
$57.6M
$110.5M
Q2 24
$48.8M
$111.7M
Q1 24
$83.5M
$94.8M
FCF Margin
QLYS
QLYS
WLKP
WLKP
Q4 25
42.8%
34.5%
Q3 25
52.7%
24.5%
Q2 25
19.8%
-5.2%
Q1 25
67.3%
12.6%
Q4 24
26.3%
41.0%
Q3 24
37.4%
39.9%
Q2 24
32.8%
39.3%
Q1 24
57.2%
33.3%
Capex Intensity
QLYS
QLYS
WLKP
WLKP
Q4 25
0.4%
2.7%
Q3 25
0.5%
9.6%
Q2 25
0.8%
8.2%
Q1 25
1.3%
6.7%
Q4 24
3.7%
4.6%
Q3 24
2.2%
5.6%
Q2 24
0.7%
3.6%
Q1 24
1.4%
3.4%
Cash Conversion
QLYS
QLYS
WLKP
WLKP
Q4 25
1.42×
8.28×
Q3 25
1.80×
7.18×
Q2 25
0.71×
0.62×
Q1 25
2.31×
9.25×
Q4 24
1.09×
8.83×
Q3 24
1.32×
6.95×
Q2 24
1.14×
8.45×
Q1 24
2.15×
7.05×

Financial Flow Comparison

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

Revenue Breakdown by Segment

QLYS
QLYS

Sales Channel Through Intermediary$88.6M51%
Sales Channel Directly To Consumer$86.7M49%

WLKP
WLKP

Affiliated Entity$296.9M92%
Nonrelated Party$26.2M8%

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