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Side-by-side financial comparison of Owens Corning (OC) and Western Digital (WDC). Click either name above to swap in a different company.

Western Digital is the larger business by last-quarter revenue ($3.3B vs $2.1B, roughly 1.6× Owens Corning). Western Digital runs the higher net margin — 96.0% vs -13.9%, a 110.0% gap on every dollar of revenue. On growth, Western Digital posted the faster year-over-year revenue change (45.5% vs -24.6%). Western Digital produced more free cash flow last quarter ($978.0M vs $333.0M). Over the past eight quarters, Owens Corning's revenue compounded faster (-3.5% CAGR vs -9.7%).

Owens Corning is an American company that develops and produces insulation, roofing, and fiberglass composites and related products. It is the world's largest manufacturer of fiberglass composites. It was formed in 1935 as a partnership between two major American glassworks, Corning Glass Works and Owens-Illinois. The company employs approximately 19,000 people around the world. Owens Corning has been a Fortune 500 company every year since the list was created in 1955. The Pink Panther is the...

Western Digital Corporation, doing business as WD, is an American data storage company headquartered in San Jose, California. Established in 1970, the company is one of the world's largest manufacturers of hard disk drives (HDDs).

OC vs WDC — Head-to-Head

Bigger by revenue
WDC
WDC
1.6× larger
WDC
$3.3B
$2.1B
OC
Growing faster (revenue YoY)
WDC
WDC
+70.0% gap
WDC
45.5%
-24.6%
OC
Higher net margin
WDC
WDC
110.0% more per $
WDC
96.0%
-13.9%
OC
More free cash flow
WDC
WDC
$645.0M more FCF
WDC
$978.0M
$333.0M
OC
Faster 2-yr revenue CAGR
OC
OC
Annualised
OC
-3.5%
-9.7%
WDC

Income Statement — Q4 FY2025 vs Q1 FY2027

Metric
OC
OC
WDC
WDC
Revenue
$2.1B
$3.3B
Net Profit
$-298.0M
$3.2B
Gross Margin
23.2%
50.2%
Operating Margin
-10.5%
35.7%
Net Margin
-13.9%
96.0%
Revenue YoY
-24.6%
45.5%
Net Profit YoY
-15.5%
516.3%
EPS (diluted)
$-3.47
$8.20

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
OC
OC
WDC
WDC
Q3 26
$3.3B
Q2 26
$3.0B
Q1 26
$3.0B
Q4 25
$2.1B
$2.8B
Q3 25
$2.7B
Q2 25
$2.7B
$-1.2B
Q1 25
$2.5B
$2.3B
Q4 24
$2.8B
$4.3B
Net Profit
OC
OC
WDC
WDC
Q3 26
$3.2B
Q2 26
$1.8B
Q1 26
$1.8B
Q4 25
$-298.0M
$1.2B
Q3 25
$-494.0M
Q2 25
$363.0M
$282.0M
Q1 25
$-93.0M
$520.0M
Q4 24
$-258.0M
$594.0M
Gross Margin
OC
OC
WDC
WDC
Q3 26
50.2%
Q2 26
45.7%
Q1 26
45.7%
Q4 25
23.2%
43.5%
Q3 25
28.2%
Q2 25
31.2%
Q1 25
28.7%
39.8%
Q4 24
28.1%
35.4%
Operating Margin
OC
OC
WDC
WDC
Q3 26
35.7%
Q2 26
30.1%
Q1 26
30.1%
Q4 25
-10.5%
28.1%
Q3 25
-12.2%
Q2 25
18.4%
Q1 25
16.1%
33.1%
Q4 24
-8.5%
19.9%
Net Margin
OC
OC
WDC
WDC
Q3 26
96.0%
Q2 26
61.1%
Q1 26
61.1%
Q4 25
-13.9%
41.9%
Q3 25
-18.4%
Q2 25
13.2%
-24.4%
Q1 25
-3.7%
22.7%
Q4 24
-9.1%
13.9%
EPS (diluted)
OC
OC
WDC
WDC
Q3 26
$8.20
Q2 26
$4.73
Q1 26
$4.73
Q4 25
$-3.47
$3.07
Q3 25
$-5.92
Q2 25
$4.25
$0.72
Q1 25
$-1.08
$1.42
Q4 24
$-2.92
$1.63

Balance Sheet & Financial Strength

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

Metric
OC
OC
WDC
WDC
Cash + ST InvestmentsLiquidity on hand
$345.0M
$2.0B
Total DebtLower is stronger
$4.7B
$1.6B
Stockholders' EquityBook value
$3.9B
$9.7B
Total Assets
$13.0B
$15.0B
Debt / EquityLower = less leverage
1.22×
0.16×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
OC
OC
WDC
WDC
Q3 26
$2.0B
Q2 26
$2.0B
Q1 26
$2.0B
Q4 25
$345.0M
$2.0B
Q3 25
$286.0M
Q2 25
$230.0M
$2.1B
Q1 25
$400.0M
$3.5B
Q4 24
$361.0M
$2.3B
Total Debt
OC
OC
WDC
WDC
Q3 26
$1.6B
Q2 26
$4.7B
Q1 26
$4.7B
Q4 25
$4.7B
$4.7B
Q3 25
$4.7B
Q2 25
$5.1B
$4.7B
Q1 25
$5.0B
$7.3B
Q4 24
$5.1B
$7.4B
Stockholders' Equity
OC
OC
WDC
WDC
Q3 26
$9.7B
Q2 26
$7.1B
Q1 26
$7.1B
Q4 25
$3.9B
$5.9B
Q3 25
$4.4B
Q2 25
$5.2B
$5.3B
Q1 25
$4.9B
$5.2B
Q4 24
$5.1B
$12.1B
Total Assets
OC
OC
WDC
WDC
Q3 26
$15.0B
Q2 26
$15.6B
Q1 26
$15.6B
Q4 25
$13.0B
$14.4B
Q3 25
$13.5B
Q2 25
$14.5B
$14.0B
Q1 25
$14.3B
$16.4B
Q4 24
$14.1B
$25.5B
Debt / Equity
OC
OC
WDC
WDC
Q3 26
0.16×
Q2 26
0.65×
Q1 26
0.65×
Q4 25
1.22×
0.80×
Q3 25
1.06×
Q2 25
0.98×
0.89×
Q1 25
1.03×
1.42×
Q4 24
1.01×
0.61×

Cash Flow & Capital Efficiency

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

Metric
OC
OC
WDC
WDC
Operating Cash FlowLast quarter
$590.0M
$1.1B
Free Cash FlowOCF − Capex
$333.0M
$978.0M
FCF MarginFCF / Revenue
15.5%
29.3%
Capex IntensityCapex / Revenue
12.0%
Cash ConversionOCF / Net Profit
0.35×
TTM Free Cash FlowTrailing 4 quarters
$962.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
OC
OC
WDC
WDC
Q3 26
$1.1B
Q2 26
$745.0M
Q1 26
Q4 25
$590.0M
$672.0M
Q3 25
$918.0M
Q2 25
$327.0M
$746.0M
Q1 25
$-49.0M
$508.0M
Q4 24
$676.0M
$403.0M
Free Cash Flow
OC
OC
WDC
WDC
Q3 26
$978.0M
Q2 26
$653.0M
Q1 26
Q4 25
$333.0M
$599.0M
Q3 25
$752.0M
Q2 25
$129.0M
$675.0M
Q1 25
$-252.0M
$379.0M
Q4 24
$479.0M
$287.0M
FCF Margin
OC
OC
WDC
WDC
Q3 26
29.3%
Q2 26
21.6%
Q1 26
Q4 25
15.5%
21.3%
Q3 25
28.0%
Q2 25
4.7%
-58.5%
Q1 25
-10.0%
16.5%
Q4 24
16.9%
6.7%
Capex Intensity
OC
OC
WDC
WDC
Q3 26
Q2 26
Q1 26
Q4 25
12.0%
2.6%
Q3 25
6.2%
Q2 25
7.2%
-6.2%
Q1 25
8.0%
5.6%
Q4 24
6.9%
2.7%
Cash Conversion
OC
OC
WDC
WDC
Q3 26
0.35×
Q2 26
0.40×
Q1 26
Q4 25
0.57×
Q3 25
Q2 25
0.90×
2.65×
Q1 25
0.98×
Q4 24
0.68×

Financial Flow Comparison

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

Revenue Breakdown by Segment

OC
OC

Insulation$724.0M34%
Residential$625.0M29%
Doors$427.0M20%
Discontinued Operations Disposed Of By Sale$299.0M14%
Commercial And Industrial Sector$101.0M5%

WDC
WDC

Segment breakdown not available.

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