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Side-by-side financial comparison of O’Reilly Automotive (ORLY) and WESTLAKE CORP (WLK). Click either name above to swap in a different company.

O’Reilly Automotive is the larger business by last-quarter revenue ($4.4B vs $2.5B, roughly 1.7× WESTLAKE CORP). O’Reilly Automotive runs the higher net margin — 13.7% vs -21.5%, a 35.2% gap on every dollar of revenue. On growth, O’Reilly Automotive posted the faster year-over-year revenue change (7.8% vs -10.9%). O’Reilly Automotive produced more free cash flow last quarter ($364.5M vs $-16.0M). Over the past eight quarters, O’Reilly Automotive's revenue compounded faster (5.4% CAGR vs -7.7%).

O'Reilly Automotive, Inc., doing business as O'Reilly Auto Parts, is an American automotive part retailer that provides automotive parts, tools, supplies, equipment, and accessories to professional service providers and do-it-yourself customers. Founded in 1957 by the O’Reilly family, O'Reilly Auto Parts operates more than 6,400 stores in 48 states, Puerto Rico, Mexico, and Canada.

Westlake Corporation is an international manufacturer and supplier of petrochemicals, polymers and fabricated building products, which are fundamental to various consumer and industrial markets. The company was founded by Ting Tsung Chao in 1986. it is the largest producer of low-density polyethylene (LDPE) in the US and ranks among the Forbes Global 2000. Westlake Chemical operates in two segments: Olefins and Vinyls, and is also an integrated producer of vinyls, with substantial downstream ...

ORLY vs WLK — Head-to-Head

Bigger by revenue
ORLY
ORLY
1.7× larger
ORLY
$4.4B
$2.5B
WLK
Growing faster (revenue YoY)
ORLY
ORLY
+18.7% gap
ORLY
7.8%
-10.9%
WLK
Higher net margin
ORLY
ORLY
35.2% more per $
ORLY
13.7%
-21.5%
WLK
More free cash flow
ORLY
ORLY
$380.5M more FCF
ORLY
$364.5M
$-16.0M
WLK
Faster 2-yr revenue CAGR
ORLY
ORLY
Annualised
ORLY
5.4%
-7.7%
WLK

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ORLY
ORLY
WLK
WLK
Revenue
$4.4B
$2.5B
Net Profit
$605.2M
$-544.0M
Gross Margin
51.8%
3.4%
Operating Margin
18.8%
-26.5%
Net Margin
13.7%
-21.5%
Revenue YoY
7.8%
-10.9%
Net Profit YoY
9.8%
-7871.4%
EPS (diluted)
$-8.01
$-4.22

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
ORLY
ORLY
WLK
WLK
Q4 25
$4.4B
$2.5B
Q3 25
$4.7B
$2.8B
Q2 25
$4.5B
$3.0B
Q1 25
$4.1B
$2.8B
Q4 24
$4.1B
$2.8B
Q3 24
$4.4B
$3.1B
Q2 24
$4.3B
$3.2B
Q1 24
$4.0B
$3.0B
Net Profit
ORLY
ORLY
WLK
WLK
Q4 25
$605.2M
$-544.0M
Q3 25
$725.9M
$-782.0M
Q2 25
$668.6M
$-142.0M
Q1 25
$538.5M
$-40.0M
Q4 24
$551.1M
$7.0M
Q3 24
$665.5M
$108.0M
Q2 24
$622.8M
$313.0M
Q1 24
$547.2M
$174.0M
Gross Margin
ORLY
ORLY
WLK
WLK
Q4 25
51.8%
3.4%
Q3 25
51.9%
8.3%
Q2 25
51.4%
8.7%
Q1 25
51.3%
8.2%
Q4 24
51.3%
11.5%
Q3 24
51.6%
16.0%
Q2 24
50.7%
20.7%
Q1 24
51.2%
15.7%
Operating Margin
ORLY
ORLY
WLK
WLK
Q4 25
18.8%
-26.5%
Q3 25
20.7%
-27.0%
Q2 25
20.2%
-3.7%
Q1 25
17.9%
-1.1%
Q4 24
18.0%
2.3%
Q3 24
20.5%
5.8%
Q2 24
20.2%
12.7%
Q1 24
18.9%
7.5%
Net Margin
ORLY
ORLY
WLK
WLK
Q4 25
13.7%
-21.5%
Q3 25
15.4%
-27.6%
Q2 25
14.8%
-4.8%
Q1 25
13.0%
-1.4%
Q4 24
13.5%
0.2%
Q3 24
15.2%
3.5%
Q2 24
14.6%
9.8%
Q1 24
13.8%
5.8%
EPS (diluted)
ORLY
ORLY
WLK
WLK
Q4 25
$-8.01
$-4.22
Q3 25
$0.85
$-6.06
Q2 25
$0.78
$-1.11
Q1 25
$9.35
$-0.31
Q4 24
$9.50
$0.07
Q3 24
$11.41
$0.83
Q2 24
$10.55
$2.40
Q1 24
$9.20
$1.34

Balance Sheet & Financial Strength

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

Metric
ORLY
ORLY
WLK
WLK
Cash + ST InvestmentsLiquidity on hand
$193.8M
$2.7B
Total DebtLower is stronger
$5.6B
Stockholders' EquityBook value
$-763.4M
$8.8B
Total Assets
$16.5B
$20.0B
Debt / EquityLower = less leverage
0.64×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ORLY
ORLY
WLK
WLK
Q4 25
$193.8M
$2.7B
Q3 25
$204.5M
$1.9B
Q2 25
$198.6M
$2.1B
Q1 25
$191.2M
$2.3B
Q4 24
$130.2M
$2.9B
Q3 24
$115.6M
$2.9B
Q2 24
$145.0M
$3.0B
Q1 24
$89.3M
$3.1B
Total Debt
ORLY
ORLY
WLK
WLK
Q4 25
$5.6B
Q3 25
$4.7B
Q2 25
$4.7B
Q1 25
$4.6B
Q4 24
$4.6B
Q3 24
$4.6B
Q2 24
$4.9B
Q1 24
$4.9B
Stockholders' Equity
ORLY
ORLY
WLK
WLK
Q4 25
$-763.4M
$8.8B
Q3 25
$-894.7M
$9.4B
Q2 25
$-1.2B
$10.3B
Q1 25
$-1.4B
$10.4B
Q4 24
$-1.4B
$10.5B
Q3 24
$-1.4B
$10.7B
Q2 24
$-1.6B
$10.6B
Q1 24
$-1.4B
$10.3B
Total Assets
ORLY
ORLY
WLK
WLK
Q4 25
$16.5B
$20.0B
Q3 25
$16.3B
$19.8B
Q2 25
$15.8B
$20.8B
Q1 25
$15.3B
$20.7B
Q4 24
$14.9B
$20.8B
Q3 24
$14.6B
$21.1B
Q2 24
$14.4B
$21.1B
Q1 24
$14.2B
$21.0B
Debt / Equity
ORLY
ORLY
WLK
WLK
Q4 25
0.64×
Q3 25
0.49×
Q2 25
0.45×
Q1 25
0.44×
Q4 24
0.43×
Q3 24
0.43×
Q2 24
0.46×
Q1 24
0.47×

Cash Flow & Capital Efficiency

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

Metric
ORLY
ORLY
WLK
WLK
Operating Cash FlowLast quarter
$633.5M
$225.0M
Free Cash FlowOCF − Capex
$364.5M
$-16.0M
FCF MarginFCF / Revenue
8.3%
-0.6%
Capex IntensityCapex / Revenue
6.1%
9.5%
Cash ConversionOCF / Net Profit
1.05×
TTM Free Cash FlowTrailing 4 quarters
$1.6B
$-530.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ORLY
ORLY
WLK
WLK
Q4 25
$633.5M
$225.0M
Q3 25
$616.5M
$182.0M
Q2 25
$756.8M
$135.0M
Q1 25
$755.1M
$-77.0M
Q4 24
$624.5M
$434.0M
Q3 24
$772.0M
$474.0M
Q2 24
$948.9M
$237.0M
Q1 24
$704.2M
$169.0M
Free Cash Flow
ORLY
ORLY
WLK
WLK
Q4 25
$364.5M
$-16.0M
Q3 25
$304.4M
$-57.0M
Q2 25
$456.1M
$-132.0M
Q1 25
$468.2M
$-325.0M
Q4 24
$334.0M
$149.0M
Q3 24
$513.7M
$254.0M
Q2 24
$723.5M
$6.0M
Q1 24
$455.0M
$-103.0M
FCF Margin
ORLY
ORLY
WLK
WLK
Q4 25
8.3%
-0.6%
Q3 25
6.5%
-2.0%
Q2 25
10.1%
-4.5%
Q1 25
11.3%
-11.4%
Q4 24
8.2%
5.2%
Q3 24
11.8%
8.1%
Q2 24
16.9%
0.2%
Q1 24
11.4%
-3.5%
Capex Intensity
ORLY
ORLY
WLK
WLK
Q4 25
6.1%
9.5%
Q3 25
6.6%
8.4%
Q2 25
6.6%
9.0%
Q1 25
6.9%
8.7%
Q4 24
7.1%
10.0%
Q3 24
5.9%
7.1%
Q2 24
5.3%
7.2%
Q1 24
6.3%
9.1%
Cash Conversion
ORLY
ORLY
WLK
WLK
Q4 25
1.05×
Q3 25
0.85×
Q2 25
1.13×
Q1 25
1.40×
Q4 24
1.13×
62.00×
Q3 24
1.16×
4.39×
Q2 24
1.52×
0.76×
Q1 24
1.29×
0.97×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ORLY
ORLY

DIY Customer$2.2B49%
Professional Service Provider Customer$2.1B49%
Other Customers And Sales Adjustments$84.4M2%

WLK
WLK

Performance Materials$930.0M37%
Housing Products$767.0M30%
Essential Materials$702.0M28%
Infrastructure Products$134.0M5%

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