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

AECOM is the larger business by last-quarter revenue ($3.8B vs $3.3B, roughly 1.1× Western Digital). Western Digital runs the higher net margin — 96.0% vs 1.9%, a 94.1% gap on every dollar of revenue. On growth, Western Digital posted the faster year-over-year revenue change (45.5% vs 1.6%). Western Digital produced more free cash flow last quarter ($978.0M vs $41.9M). Over the past eight quarters, AECOM's revenue compounded faster (-1.4% CAGR vs -9.7%).

AECOM is an American multinational infrastructure consulting firm headquartered in Dallas, Texas.

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).

ACM vs WDC — Head-to-Head

Bigger by revenue
ACM
ACM
1.1× larger
ACM
$3.8B
$3.3B
WDC
Growing faster (revenue YoY)
WDC
WDC
+43.9% gap
WDC
45.5%
1.6%
ACM
Higher net margin
WDC
WDC
94.1% more per $
WDC
96.0%
1.9%
ACM
More free cash flow
WDC
WDC
$936.1M more FCF
WDC
$978.0M
$41.9M
ACM
Faster 2-yr revenue CAGR
ACM
ACM
Annualised
ACM
-1.4%
-9.7%
WDC

Income Statement — Q1 FY2026 vs Q1 FY2027

Metric
ACM
ACM
WDC
WDC
Revenue
$3.8B
$3.3B
Net Profit
$74.5M
$3.2B
Gross Margin
7.3%
50.2%
Operating Margin
5.8%
35.7%
Net Margin
1.9%
96.0%
Revenue YoY
1.6%
45.5%
Net Profit YoY
-48.0%
516.3%
EPS (diluted)
$0.56
$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
ACM
ACM
WDC
WDC
Q3 26
$3.3B
Q2 26
$3.0B
Q1 26
$3.8B
$3.0B
Q4 25
$2.8B
Q3 25
$4.2B
Q2 25
$4.2B
$-1.2B
Q1 25
$3.8B
$2.3B
Q4 24
$4.0B
$4.3B
Net Profit
ACM
ACM
WDC
WDC
Q3 26
$3.2B
Q2 26
$1.8B
Q1 26
$74.5M
$1.8B
Q4 25
$1.2B
Q3 25
$120.4M
Q2 25
$131.0M
$282.0M
Q1 25
$143.4M
$520.0M
Q4 24
$167.0M
$594.0M
Gross Margin
ACM
ACM
WDC
WDC
Q3 26
50.2%
Q2 26
45.7%
Q1 26
7.3%
45.7%
Q4 25
43.5%
Q3 25
7.9%
Q2 25
7.8%
Q1 25
7.7%
39.8%
Q4 24
6.7%
35.4%
Operating Margin
ACM
ACM
WDC
WDC
Q3 26
35.7%
Q2 26
30.1%
Q1 26
5.8%
30.1%
Q4 25
28.1%
Q3 25
5.7%
Q2 25
7.0%
Q1 25
6.8%
33.1%
Q4 24
5.9%
19.9%
Net Margin
ACM
ACM
WDC
WDC
Q3 26
96.0%
Q2 26
61.1%
Q1 26
1.9%
61.1%
Q4 25
41.9%
Q3 25
2.9%
Q2 25
3.1%
-24.4%
Q1 25
3.8%
22.7%
Q4 24
4.2%
13.9%
EPS (diluted)
ACM
ACM
WDC
WDC
Q3 26
$8.20
Q2 26
$4.73
Q1 26
$0.56
$4.73
Q4 25
$3.07
Q3 25
$0.90
Q2 25
$0.98
$0.72
Q1 25
$1.08
$1.42
Q4 24
$1.25
$1.63

Balance Sheet & Financial Strength

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

Metric
ACM
ACM
WDC
WDC
Cash + ST InvestmentsLiquidity on hand
$1.2B
$2.0B
Total DebtLower is stronger
$2.6B
$1.6B
Stockholders' EquityBook value
$2.2B
$9.7B
Total Assets
$11.9B
$15.0B
Debt / EquityLower = less leverage
1.18×
0.16×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACM
ACM
WDC
WDC
Q3 26
$2.0B
Q2 26
$2.0B
Q1 26
$1.2B
$2.0B
Q4 25
$2.0B
Q3 25
$1.6B
Q2 25
$1.8B
$2.1B
Q1 25
$1.6B
$3.5B
Q4 24
$1.6B
$2.3B
Total Debt
ACM
ACM
WDC
WDC
Q3 26
$1.6B
Q2 26
$4.7B
Q1 26
$2.6B
$4.7B
Q4 25
$4.7B
Q3 25
$2.6B
Q2 25
$2.5B
$4.7B
Q1 25
$2.5B
$7.3B
Q4 24
$2.5B
$7.4B
Stockholders' Equity
ACM
ACM
WDC
WDC
Q3 26
$9.7B
Q2 26
$7.1B
Q1 26
$2.2B
$7.1B
Q4 25
$5.9B
Q3 25
$2.5B
Q2 25
$2.5B
$5.3B
Q1 25
$2.3B
$5.2B
Q4 24
$2.2B
$12.1B
Total Assets
ACM
ACM
WDC
WDC
Q3 26
$15.0B
Q2 26
$15.6B
Q1 26
$11.9B
$15.6B
Q4 25
$14.4B
Q3 25
$12.2B
Q2 25
$12.3B
$14.0B
Q1 25
$11.8B
$16.4B
Q4 24
$11.8B
$25.5B
Debt / Equity
ACM
ACM
WDC
WDC
Q3 26
0.16×
Q2 26
0.65×
Q1 26
1.18×
0.65×
Q4 25
0.80×
Q3 25
1.06×
Q2 25
0.99×
0.89×
Q1 25
1.07×
1.42×
Q4 24
1.11×
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
ACM
ACM
WDC
WDC
Operating Cash FlowLast quarter
$70.2M
$1.1B
Free Cash FlowOCF − Capex
$41.9M
$978.0M
FCF MarginFCF / Revenue
1.1%
29.3%
Capex IntensityCapex / Revenue
0.7%
Cash ConversionOCF / Net Profit
0.94×
0.35×
TTM Free Cash FlowTrailing 4 quarters
$616.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACM
ACM
WDC
WDC
Q3 26
$1.1B
Q2 26
$745.0M
Q1 26
$70.2M
Q4 25
$672.0M
Q3 25
$196.1M
Q2 25
$283.7M
$746.0M
Q1 25
$190.7M
$508.0M
Q4 24
$151.1M
$403.0M
Free Cash Flow
ACM
ACM
WDC
WDC
Q3 26
$978.0M
Q2 26
$653.0M
Q1 26
$41.9M
Q4 25
$599.0M
Q3 25
$134.1M
Q2 25
$261.7M
$675.0M
Q1 25
$178.3M
$379.0M
Q4 24
$110.9M
$287.0M
FCF Margin
ACM
ACM
WDC
WDC
Q3 26
29.3%
Q2 26
21.6%
Q1 26
1.1%
Q4 25
21.3%
Q3 25
3.2%
Q2 25
6.3%
-58.5%
Q1 25
4.7%
16.5%
Q4 24
2.8%
6.7%
Capex Intensity
ACM
ACM
WDC
WDC
Q3 26
Q2 26
Q1 26
0.7%
Q4 25
2.6%
Q3 25
1.5%
Q2 25
0.5%
-6.2%
Q1 25
0.3%
5.6%
Q4 24
1.0%
2.7%
Cash Conversion
ACM
ACM
WDC
WDC
Q3 26
0.35×
Q2 26
0.40×
Q1 26
0.94×
Q4 25
0.57×
Q3 25
1.63×
Q2 25
2.17×
2.65×
Q1 25
1.33×
0.98×
Q4 24
0.90×
0.68×

Financial Flow Comparison

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

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