AIG vs. AON: American International vs. Aon Stock Comparison
How do American International (AIG) and Aon (AON) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.
Company Profile
American International (AIG) and Aon (AON) both belong to the Insurance industry, though AIG is classified under Multi-line Insurance while AON falls under Insurance Brokers.
| Profile Item | AIG | AON |
|---|---|---|
| Name | American International Group, Inc. | Aon plc Class A |
| Country/Region | United States | Ireland |
| GICS Sector | Financials | Financials |
| GICS Industry Group | Insurance | Insurance |
| GICS Industry | Insurance | Insurance |
| GICS Sub-Industry | Multi-line Insurance | Insurance Brokers |
| Market Capitalization | 40.31 billion USD | 71.03 billion USD |
| Currency | USD | USD |
| Exchange | NYSE | NYSE |
| Listing Date | January 2, 1973 | June 2, 1980 |
| Security Type | Common Stock | Common Stock |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | AIG | AON |
|---|---|---|
| Total Return (1Y) | 5.79% | -1.97% |
| Total Return (3Y, Annualized) | 10.55% | 1.25% |
| Total Return (5Y, Annualized) | 8.67% | 3.28% |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
| Metric | AIG | AON |
|---|---|---|
| Volatility (1Y, Annualized) | 23.72% | 29.20% |
| Beta (5Y) | 0.47 | 0.60 |
| Max Drawdown (5Y) | -26.45% | -33.57% |
| Avg. Volume (3M) | 4.14M | 1.64M |
Risk-Adjusted Performance
Risk-Return Positioning
Risk-Adjusted Metrics
| Metric | AIG | AON |
|---|---|---|
| Sharpe Ratio (1Y) | 0.06 | -0.21 |
| Sortino Ratio (1Y) | 0.09 | -0.29 |
Profitability
ROE (TTM)
Aon (AON) at 43.38% delivers above-range ROE, while American International (AIG) at 8.23% falls into the bottom quartile — a wide split in profit generated from equity.
AIG
Insurance industry group
8.23%
- Max
- 41.68%
- Q3
- 22.04%
- Median
- 14.81%
- Q1
- 8.79%
- AIG
- 8.23%
- Min
- -10.66%
AON
Insurance industry group
43.38%
- AON
- 43.38%
- Max
- 41.68%
- Q3
- 22.04%
- Median
- 14.81%
- Q1
- 8.79%
- Min
- -10.66%
Net Margin (TTM)
Aon (AON) at 22.24% retains a top-quartile share of revenue as profit, ahead of American International (AIG) at 11.84%, which keeps about the industry-typical share.
AIG
Insurance industry group
11.84%
- Max
- 29.92%
- Q3
- 17.03%
- AIG
- 11.84%
- Median
- 10.97%
- Q1
- 6.21%
- Min
- -4.68%
AON
Insurance industry group
22.24%
- Max
- 29.92%
- AON
- 22.24%
- Q3
- 17.03%
- Median
- 10.97%
- Q1
- 6.21%
- Min
- -4.68%
Operating Margin (TTM)
Neither side reports a meaningful operating margin: for American International (AIG) in Insurance and Aon (AON) in Insurance, funding costs are part of the core business, so net margin and ROE are the cleaner profitability reads.
Profitability Metrics
| Metric | AIG | AON |
|---|---|---|
| ROE (TTM) | 8.23% | 43.38% |
| ROA (TTM) | 1.95% | 5.45% |
| Net Margin (TTM) | 11.84% | 22.24% |
| Operating Margin (TTM) | -- | -- |
| Gross Margin (TTM) | -- | -- |
Growth
Revenue Growth
Aon (AON) at 9.45% is around its peer norm for revenue growth, while American International (AIG) at -1.82% drops into the bottom quartile, signaling weaker demand or pricing momentum.
EPS Growth
Only one side can be read here: Aon (AON) reports EPS growth of 36.27%, ranked against its industry; American International (AIG) has no EPS growth figure this period.
Growth Metrics
| Metric | AIG | AON |
|---|---|---|
| Revenue Growth (YoY) | -1.82% | 9.45% |
| Revenue Growth (3Y CAGR) | -3.69% | 11.25% |
| EPS Growth (YoY) | -- | 36.27% |
| EPS Growth (3Y CAGR) | -25.13% | 11.92% |
Financial Strength
Current Ratio (MRQ)
current ratio doesn’t apply on either side: American International (AIG) in Insurance and Aon (AON) in Insurance both report balance sheets without a current/non-current split, so their short-term liquidity is better judged through regulatory and funding measures.
Debt / Equity (MRQ)
debt-to-equity ratio is set aside for both: American International (AIG) in Insurance and Aon (AON) in Insurance run businesses where balance-sheet leverage is part of the model, so capital-adequacy and funding measures are the better gauges of balance-sheet risk.
Financial Strength Metrics
| Metric | AIG | AON |
|---|---|---|
| Current Ratio (MRQ) | -- | -- |
| Debt / Equity (MRQ) | -- | -- |
| Net Debt / EBITDA | -- | -- |
Dividends
Dividend Yield (TTM)
American International (AIG) at 2.35% delivers top-quartile income for its industry, while Aon (AON) at 0.91% pays a more typical yield — both are credible income propositions, AIG the richer one.
AIG
Insurance industry group
2.35%
- Max
- 5.12%
- AIG
- 2.35%
- Q3
- 2.15%
- Median
- 0.98%
- Q1
- 0.00%
- Min
- 0.00%
AON
Insurance industry group
0.91%
- Max
- 5.12%
- Q3
- 2.15%
- Median
- 0.98%
- AON
- 0.91%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Payout Ratio (TTM)
Both American International (AIG) at 31.00% and Aon (AON) at 17.13% keep payout ratio within their industries’ typical mid-ranges — dividend policies that share earnings without consuming too much of them.
AIG
Insurance industry group
31.00%
- Max
- 76.67%
- Q3
- 35.18%
- AIG
- 31.00%
- Median
- 14.74%
- Q1
- 0.00%
- Min
- 0.00%
AON
Insurance industry group
17.13%
- Max
- 76.67%
- Q3
- 35.18%
- AON
- 17.13%
- Median
- 14.74%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Metrics
| Metric | AIG | AON |
|---|---|---|
| Dividend Yield (TTM) | 2.35% | 0.91% |
| Dividend Payout Ratio (TTM) | 31.00% | 17.13% |
Valuation
P/E Ratio (TTM)
Both American International (AIG) at 12.68 and Aon (AON) at 18.33 land around their industries’ usual P/E ratio levels — neither is getting a clear earnings-multiple discount or premium versus peers.
AIG
Insurance industry group
12.68
- Max
- 28.37
- Q3
- 18.75
- AIG
- 12.68
- Median
- 12.23
- Q1
- 9.08
- Min
- 2.32
AON
Insurance industry group
18.33
- Max
- 28.37
- Q3
- 18.75
- AON
- 18.33
- Median
- 12.23
- Q1
- 9.08
- Min
- 2.32
P/S Ratio (TTM)
American International (AIG) at 1.45 is priced about in line with its industry on P/S ratio, while Aon (AON) at 4.02 sits in the pricier quartile — AON costs more per dollar of sales.
AIG
Insurance industry group
1.45
- Max
- 4.03
- Q3
- 2.25
- AIG
- 1.45
- Median
- 1.23
- Q1
- 0.85
- Min
- 0.07
AON
Insurance industry group
4.02
- Max
- 4.03
- AON
- 4.02
- Q3
- 2.25
- Median
- 1.23
- Q1
- 0.85
- Min
- 0.07
P/B Ratio (MRQ)
American International (AIG) at 1.04 sits in the lower P/B ratio quartile relative to book while Aon (AON) at 7.03 prices above its industry range — a wide valuation gap against assets.
AIG
Insurance industry group
1.04
- Max
- 5.07
- Q3
- 2.79
- Median
- 1.76
- Q1
- 1.23
- AIG
- 1.04
- Min
- 0.30
AON
Insurance industry group
7.03
- AON
- 7.03
- Max
- 5.07
- Q3
- 2.79
- Median
- 1.76
- Q1
- 1.23
- Min
- 0.30
Valuation Metrics
| Metric | AIG | AON |
|---|---|---|
| P/E Ratio (TTM) | 12.68 | 18.33 |
| P/S Ratio (TTM) | 1.45 | 4.02 |
| P/B Ratio (MRQ) | 1.04 | 7.03 |
| Free Cash Flow Yield (TTM) | -- | -- |