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

Aramark is the larger business by last-quarter revenue ($4.8B vs $4.3B, roughly 1.1× Aon plc). Aon plc runs the higher net margin — 39.4% vs 2.0%, a 37.4% gap on every dollar of revenue. On growth, Aramark posted the faster year-over-year revenue change (6.1% vs 3.7%). Aon plc produced more free cash flow last quarter ($1.3B vs $-904.4M). Over the past eight quarters, Aramark's revenue compounded faster (7.3% 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.

Aramark is an American food service and facilities services provider to clients in areas including education, prisons, healthcare, business, and leisure. It operates in North America and an additional 14 countries, including the United Kingdom, Germany, Chile, Ireland, and Spain.

AON vs ARMK — Head-to-Head

Bigger by revenue
ARMK
ARMK
1.1× larger
ARMK
$4.8B
$4.3B
AON
Growing faster (revenue YoY)
ARMK
ARMK
+2.4% gap
ARMK
6.1%
3.7%
AON
Higher net margin
AON
AON
37.4% more per $
AON
39.4%
2.0%
ARMK
More free cash flow
AON
AON
$2.2B more FCF
AON
$1.3B
$-904.4M
ARMK
Faster 2-yr revenue CAGR
ARMK
ARMK
Annualised
ARMK
7.3%
2.8%
AON

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AON
AON
ARMK
ARMK
Revenue
$4.3B
$4.8B
Net Profit
$1.7B
$96.2M
Gross Margin
Operating Margin
28.1%
4.5%
Net Margin
39.4%
2.0%
Revenue YoY
3.7%
6.1%
Net Profit YoY
136.5%
-9.0%
EPS (diluted)
$7.82
$0.36

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
ARMK
ARMK
Q1 26
$4.8B
Q4 25
$4.3B
$5.0B
Q3 25
$4.0B
Q2 25
$4.2B
$4.6B
Q1 25
$4.7B
$4.3B
Q4 24
$4.1B
$4.6B
Q3 24
$3.7B
$4.4B
Q2 24
$3.8B
$4.4B
Net Profit
AON
AON
ARMK
ARMK
Q1 26
$96.2M
Q4 25
$1.7B
$87.1M
Q3 25
$458.0M
Q2 25
$579.0M
$71.8M
Q1 25
$965.0M
$61.9M
Q4 24
$716.0M
$105.6M
Q3 24
$343.0M
$122.4M
Q2 24
$524.0M
$58.1M
Operating Margin
AON
AON
ARMK
ARMK
Q1 26
4.5%
Q4 25
28.1%
4.3%
Q3 25
20.4%
Q2 25
20.7%
3.9%
Q1 25
30.9%
4.1%
Q4 24
26.3%
4.8%
Q3 24
16.7%
5.0%
Q2 24
17.4%
3.7%
Net Margin
AON
AON
ARMK
ARMK
Q1 26
2.0%
Q4 25
39.4%
1.7%
Q3 25
11.5%
Q2 25
13.9%
1.6%
Q1 25
20.4%
1.4%
Q4 24
17.3%
2.3%
Q3 24
9.2%
2.8%
Q2 24
13.9%
1.3%
EPS (diluted)
AON
AON
ARMK
ARMK
Q1 26
$0.36
Q4 25
$7.82
$0.33
Q3 25
$2.11
Q2 25
$2.66
$0.27
Q1 25
$4.43
$0.23
Q4 24
$3.11
$0.39
Q3 24
$1.57
$0.46
Q2 24
$2.46
$0.22

Balance Sheet & Financial Strength

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

Metric
AON
AON
ARMK
ARMK
Cash + ST InvestmentsLiquidity on hand
$2.8B
$439.6M
Total DebtLower is stronger
$15.2B
$6.2B
Stockholders' EquityBook value
$9.4B
$3.2B
Total Assets
$50.8B
$13.5B
Debt / EquityLower = less leverage
1.63×
1.94×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AON
AON
ARMK
ARMK
Q1 26
$439.6M
Q4 25
$2.8B
$639.1M
Q3 25
$1.3B
Q2 25
$1.4B
$501.5M
Q1 25
$1.3B
$920.5M
Q4 24
$1.3B
$484.1M
Q3 24
$1.3B
$672.5M
Q2 24
$1.2B
$436.1M
Total Debt
AON
AON
ARMK
ARMK
Q1 26
$6.2B
Q4 25
$15.2B
$5.4B
Q3 25
Q2 25
$6.3B
Q1 25
$6.1B
Q4 24
$17.0B
$5.0B
Q3 24
$4.3B
Q2 24
$5.0B
Stockholders' Equity
AON
AON
ARMK
ARMK
Q1 26
$3.2B
Q4 25
$9.4B
$3.1B
Q3 25
$7.9B
Q2 25
$7.8B
$3.1B
Q1 25
$7.0B
$3.0B
Q4 24
$6.1B
$3.1B
Q3 24
$6.2B
$3.0B
Q2 24
$5.9B
$2.9B
Total Assets
AON
AON
ARMK
ARMK
Q1 26
$13.5B
Q4 25
$50.8B
$13.3B
Q3 25
$51.6B
Q2 25
$54.0B
$13.3B
Q1 25
$50.3B
$13.5B
Q4 24
$49.0B
$12.7B
Q3 24
$49.9B
$12.7B
Q2 24
$51.5B
$12.5B
Debt / Equity
AON
AON
ARMK
ARMK
Q1 26
1.94×
Q4 25
1.63×
1.71×
Q3 25
Q2 25
2.03×
Q1 25
2.02×
Q4 24
2.78×
1.61×
Q3 24
1.42×
Q2 24
1.71×

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
ARMK
ARMK
Operating Cash FlowLast quarter
$1.4B
$-782.2M
Free Cash FlowOCF − Capex
$1.3B
$-904.4M
FCF MarginFCF / Revenue
30.8%
-18.7%
Capex IntensityCapex / Revenue
1.7%
2.5%
Cash ConversionOCF / Net Profit
0.83×
-8.13×
TTM Free Cash FlowTrailing 4 quarters
$3.2B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AON
AON
ARMK
ARMK
Q1 26
$-782.2M
Q4 25
$1.4B
Q3 25
$1.1B
Q2 25
$796.0M
$76.7M
Q1 25
$140.0M
$255.9M
Q4 24
$1.2B
$-587.2M
Q3 24
$1.0B
$1.0B
Q2 24
$513.0M
$140.7M
Free Cash Flow
AON
AON
ARMK
ARMK
Q1 26
$-904.4M
Q4 25
$1.3B
Q3 25
$1.1B
Q2 25
$732.0M
$-34.7M
Q1 25
$84.0M
$140.1M
Q4 24
$1.1B
$-707.0M
Q3 24
$951.0M
$882.3M
Q2 24
$460.0M
$55.6M
FCF Margin
AON
AON
ARMK
ARMK
Q1 26
-18.7%
Q4 25
30.8%
Q3 25
27.0%
Q2 25
17.6%
-0.8%
Q1 25
1.8%
3.3%
Q4 24
27.6%
-15.5%
Q3 24
25.6%
20.0%
Q2 24
12.2%
1.3%
Capex Intensity
AON
AON
ARMK
ARMK
Q1 26
2.5%
Q4 25
1.7%
2.8%
Q3 25
1.7%
Q2 25
1.5%
2.4%
Q1 25
1.2%
2.7%
Q4 24
1.3%
2.6%
Q3 24
1.7%
3.2%
Q2 24
1.4%
1.9%
Cash Conversion
AON
AON
ARMK
ARMK
Q1 26
-8.13×
Q4 25
0.83×
Q3 25
2.51×
Q2 25
1.37×
1.07×
Q1 25
0.15×
4.14×
Q4 24
1.68×
-5.56×
Q3 24
2.95×
8.35×
Q2 24
0.98×
2.42×

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%

ARMK
ARMK

Education$1.1B22%
Sports Leisure Corrections$961.2M20%
Food And Support Services International$847.8M18%
Other$621.6M13%
Businessand Industry$510.6M11%
Health Care$421.3M9%
Facility Services$382.9M8%

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