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Side-by-side financial comparison of Aon plc (AON) and OSHKOSH CORP (OSK). Click either name above to swap in a different company.

Aon plc is the larger business by last-quarter revenue ($4.3B vs $2.7B, roughly 1.6× OSHKOSH CORP). Aon plc runs the higher net margin — 39.4% vs 5.0%, a 34.4% gap on every dollar of revenue. On growth, Aon plc posted the faster year-over-year revenue change (3.7% vs 3.5%). Aon plc produced more free cash flow last quarter ($1.3B vs $540.3M). Over the past eight quarters, OSHKOSH CORP's revenue compounded faster (2.8% CAGR vs 2.8%).

Aon plc is a British-American professional services firm. The company operates two divisions: Risk Capital, which provides brokerage and consulting services for risk management and insurance and reinsurance, and Human Capital, which provides services for health insurance, retirement plans, pension plans, and talent advisory.

Oshkosh Corporation, formerly Oshkosh Truck, is an American industrial company that designs and builds specialty trucks, military vehicles, truck bodies, airport fire apparatus, and access equipment. The corporation also owns Pierce Manufacturing, a fire apparatus manufacturer in Appleton, Wisconsin, and JLG Industries, a manufacturer of lift equipment, including aerial lifts, boom lifts, scissor lifts, telehandlers and low-level access lifts.

AON vs OSK — Head-to-Head

Bigger by revenue
AON
AON
1.6× larger
AON
$4.3B
$2.7B
OSK
Growing faster (revenue YoY)
AON
AON
+0.2% gap
AON
3.7%
3.5%
OSK
Higher net margin
AON
AON
34.4% more per $
AON
39.4%
5.0%
OSK
More free cash flow
AON
AON
$782.7M more FCF
AON
$1.3B
$540.3M
OSK
Faster 2-yr revenue CAGR
OSK
OSK
Annualised
OSK
2.8%
2.8%
AON

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AON
AON
OSK
OSK
Revenue
$4.3B
$2.7B
Net Profit
$1.7B
$133.8M
Gross Margin
15.8%
Operating Margin
28.1%
7.9%
Net Margin
39.4%
5.0%
Revenue YoY
3.7%
3.5%
Net Profit YoY
136.5%
-12.6%
EPS (diluted)
$7.82

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
AON
AON
OSK
OSK
Q4 25
$4.3B
$2.7B
Q3 25
$4.0B
$2.7B
Q2 25
$4.2B
$2.7B
Q1 25
$4.7B
$2.3B
Q4 24
$4.1B
$2.6B
Q3 24
$3.7B
$2.7B
Q2 24
$3.8B
$2.8B
Q1 24
$4.1B
$2.5B
Net Profit
AON
AON
OSK
OSK
Q4 25
$1.7B
$133.8M
Q3 25
$458.0M
$196.2M
Q2 25
$579.0M
$204.8M
Q1 25
$965.0M
$112.2M
Q4 24
$716.0M
$153.1M
Q3 24
$343.0M
$180.3M
Q2 24
$524.0M
$168.6M
Q1 24
$1.1B
$179.4M
Gross Margin
AON
AON
OSK
OSK
Q4 25
15.8%
Q3 25
17.5%
Q2 25
19.2%
Q1 25
17.3%
Q4 24
17.2%
Q3 24
18.5%
Q2 24
19.2%
Q1 24
18.5%
Operating Margin
AON
AON
OSK
OSK
Q4 25
28.1%
7.9%
Q3 25
20.4%
9.7%
Q2 25
20.7%
10.7%
Q1 25
30.9%
7.6%
Q4 24
26.3%
8.6%
Q3 24
16.7%
9.7%
Q2 24
17.4%
9.2%
Q1 24
36.0%
10.2%
Net Margin
AON
AON
OSK
OSK
Q4 25
39.4%
5.0%
Q3 25
11.5%
7.3%
Q2 25
13.9%
7.5%
Q1 25
20.4%
4.9%
Q4 24
17.3%
5.9%
Q3 24
9.2%
6.6%
Q2 24
13.9%
5.9%
Q1 24
26.3%
7.1%
EPS (diluted)
AON
AON
OSK
OSK
Q4 25
$7.82
Q3 25
$2.11
Q2 25
$2.66
Q1 25
$4.43
Q4 24
$3.11
Q3 24
$1.57
Q2 24
$2.46
Q1 24
$5.35

Balance Sheet & Financial Strength

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

Metric
AON
AON
OSK
OSK
Cash + ST InvestmentsLiquidity on hand
$2.8B
$479.8M
Total DebtLower is stronger
$15.2B
Stockholders' EquityBook value
$9.4B
$4.5B
Total Assets
$50.8B
$10.1B
Debt / EquityLower = less leverage
1.63×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AON
AON
OSK
OSK
Q4 25
$2.8B
$479.8M
Q3 25
$1.3B
$211.8M
Q2 25
$1.4B
$191.7M
Q1 25
$1.3B
$210.3M
Q4 24
$1.3B
$204.9M
Q3 24
$1.3B
$160.9M
Q2 24
$1.2B
$141.4M
Q1 24
$6.4B
$69.9M
Total Debt
AON
AON
OSK
OSK
Q4 25
$15.2B
Q3 25
Q2 25
Q1 25
Q4 24
$17.0B
Q3 24
$602.3M
Q2 24
$599.1M
Q1 24
$598.9M
Stockholders' Equity
AON
AON
OSK
OSK
Q4 25
$9.4B
$4.5B
Q3 25
$7.9B
$4.5B
Q2 25
$7.8B
$4.5B
Q1 25
$7.0B
$4.2B
Q4 24
$6.1B
$4.2B
Q3 24
$6.2B
$4.1B
Q2 24
$5.9B
$3.9B
Q1 24
$-133.0M
$3.8B
Total Assets
AON
AON
OSK
OSK
Q4 25
$50.8B
$10.1B
Q3 25
$51.6B
$9.8B
Q2 25
$54.0B
$10.0B
Q1 25
$50.3B
$9.8B
Q4 24
$49.0B
$9.4B
Q3 24
$49.9B
$9.9B
Q2 24
$51.5B
$9.7B
Q1 24
$40.8B
$9.5B
Debt / Equity
AON
AON
OSK
OSK
Q4 25
1.63×
Q3 25
Q2 25
Q1 25
Q4 24
2.78×
Q3 24
0.15×
Q2 24
0.15×
Q1 24
0.16×

Cash Flow & Capital Efficiency

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

Metric
AON
AON
OSK
OSK
Operating Cash FlowLast quarter
$1.4B
$600.1M
Free Cash FlowOCF − Capex
$1.3B
$540.3M
FCF MarginFCF / Revenue
30.8%
20.1%
Capex IntensityCapex / Revenue
1.7%
2.2%
Cash ConversionOCF / Net Profit
0.83×
4.49×
TTM Free Cash FlowTrailing 4 quarters
$3.2B
$618.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AON
AON
OSK
OSK
Q4 25
$1.4B
$600.1M
Q3 25
$1.1B
$489.0M
Q2 25
$796.0M
$89.2M
Q1 25
$140.0M
$-394.9M
Q4 24
$1.2B
$790.8M
Q3 24
$1.0B
$326.1M
Q2 24
$513.0M
$-211.0M
Q1 24
$309.0M
$-355.8M
Free Cash Flow
AON
AON
OSK
OSK
Q4 25
$1.3B
$540.3M
Q3 25
$1.1B
$464.3M
Q2 25
$732.0M
$48.6M
Q1 25
$84.0M
$-435.2M
Q4 24
$1.1B
$703.3M
Q3 24
$951.0M
$272.2M
Q2 24
$460.0M
$-250.5M
Q1 24
$261.0M
$-455.9M
FCF Margin
AON
AON
OSK
OSK
Q4 25
30.8%
20.1%
Q3 25
27.0%
17.3%
Q2 25
17.6%
1.8%
Q1 25
1.8%
-18.8%
Q4 24
27.6%
27.1%
Q3 24
25.6%
9.9%
Q2 24
12.2%
-8.8%
Q1 24
6.4%
-17.9%
Capex Intensity
AON
AON
OSK
OSK
Q4 25
1.7%
2.2%
Q3 25
1.7%
0.9%
Q2 25
1.5%
1.5%
Q1 25
1.2%
1.7%
Q4 24
1.3%
3.4%
Q3 24
1.7%
2.0%
Q2 24
1.4%
1.4%
Q1 24
1.2%
3.9%
Cash Conversion
AON
AON
OSK
OSK
Q4 25
0.83×
4.49×
Q3 25
2.51×
2.49×
Q2 25
1.37×
0.44×
Q1 25
0.15×
-3.52×
Q4 24
1.68×
5.17×
Q3 24
2.95×
1.81×
Q2 24
0.98×
-1.25×
Q1 24
0.29×
-1.98×

Financial Flow Comparison

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

Revenue Breakdown by Segment

AON
AON

Commercial Risk Solutions$2.3B54%
Health Solutions$1.1B26%
Wealth Solutions$490.0M11%
Reinsurance Solutions$379.0M9%

OSK
OSK

Vocational Segment$922.4M34%
Aerial Works Platforms$548.6M20%
Other Access Equipment$311.8M12%
Telehandlers$311.2M12%
Airport Products$252.7M9%
Delivery Vehicles$165.0M6%
Other Vocational$130.7M5%
Transferred Over Time$23.5M1%

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