AOS vs. UNH
AOS (A. O. Smith Corporation) and UNH (UnitedHealth Group Incorporated) are both stocks. AOS operates in Specialty Industrial Machinery (Industrials), while UNH operates in Healthcare Plans (Healthcare). Over the past 10 years, AOS returned 5.40%/yr vs 13.32%/yr for UNH. At a 0.22 correlation, their price movements are largely independent.
Performance
AOS vs. UNH - Performance Comparison
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Returns By Period
In the year-to-date period, AOS achieves a -10.72% return, which is significantly lower than UNH's 24.71% return. Over the past 10 years, AOS has underperformed UNH with an annualized return of 5.40%, while UNH has yielded a comparatively higher 13.32% annualized return.
AOS
- 1D
- 0.72%
- 1M
- 5.48%
- YTD
- -10.72%
- 6M
- -13.11%
- 1Y
- -5.46%
- 3Y*
- -3.46%
- 5Y*
- -1.16%
- 10Y*
- 5.40%
UNH
- 1D
- 0.73%
- 1M
- 3.72%
- YTD
- 24.71%
- 6M
- 20.44%
- 1Y
- 33.97%
- 3Y*
- -4.10%
- 5Y*
- 2.27%
- 10Y*
- 13.32%
AOS vs. UNH - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AOS A. O. Smith Corporation | -10.72% | 0.07% | -15.92% | 47.30% | -32.07% | 59.28% | 17.46% | 13.65% | -29.35% | 30.78% |
UNH UnitedHealth Group Incorporated | 24.71% | -33.14% | -2.41% | 0.80% | 6.94% | 45.20% | 21.25% | 20.00% | 14.52% | 39.83% |
Correlation
The correlation between AOS and UNH is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.13 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.14 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.21 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.26 |
Correlation (All Time) Calculated using the full available price history since Mar 26, 1990 | 0.22 |
The correlation between AOS and UNH shifts across timeframes, from 0.13 (1 year) to 0.26 (10 years), reflecting how their relationship changes across market environments.
Fundamentals
AOS:
$8.22B
UNH:
$371.75B
AOS:
$3.75
UNH:
$13.23
AOS:
15.76
UNH:
30.88
AOS:
2.18
UNH:
0.83
AOS:
3.81
UNH:
3.58
AOS:
$3.81B
UNH:
$449.71B
AOS:
$1.48B
UNH:
$84.55B
AOS:
$794.70M
UNH:
$22.99B
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Return for Risk
AOS vs. UNH — Risk / Return Rank
AOS
UNH
AOS vs. UNH - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for A. O. Smith Corporation (AOS) and UnitedHealth Group Incorporated (UNH). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| AOS | UNH | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.04 | ||
| Sortino ratioReturn per unit of downside risk | -1.44 | ||
| Omega ratioGain probability vs. loss probability | 0.98 | 1.19 | -0.21 |
| Calmar ratioReturn relative to maximum drawdown | -0.20 | 1.11 | -1.31 |
| Martin ratioReturn relative to average drawdown | -0.47 | 2.43 | -2.89 |
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Drawdowns
AOS vs. UNH - Drawdown Comparison
The maximum AOS drawdown since its inception was -66.07%, smaller than the maximum UNH drawdown of -74.37%. Use the drawdown chart below to compare losses from any high point for AOS and UNH.
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Drawdown Indicators
| AOS | UNH | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -66.07% | -74.37% | +8.30% |
Max Drawdown (1Y)Largest decline over 1 year | -30.29% | -28.96% | -1.33% |
Max Drawdown (3Y)Largest decline over 3 years | -36.93% | -61.39% | +24.46% |
Max Drawdown (5Y)Largest decline over 5 years | -42.68% | -61.39% | +18.71% |
Max Drawdown (10Y)Largest decline over 10 years | -46.81% | -61.39% | +14.58% |
Current DrawdownCurrent decline from peak | -33.20% | -32.27% | -0.93% |
Average DrawdownAverage peak-to-trough decline | -20.48% | -14.77% | -5.71% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 13.12% | 13.19% | -0.07% |
Volatility
AOS vs. UNH - Volatility Comparison
A. O. Smith Corporation (AOS) has a higher volatility of 8.06% compared to UnitedHealth Group Incorporated (UNH) at 7.60%. This indicates that AOS's price experiences larger fluctuations and is considered to be riskier than UNH based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AOS | UNH | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.06% | 7.60% | +0.46% |
Volatility (6M)Calculated over the trailing 6-month period | 19.33% | 30.86% | -11.53% |
Volatility (1Y)Calculated over the trailing 1-year period | 25.19% | 40.10% | -14.91% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 27.14% | 31.87% | -4.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 27.09% | 30.18% | -3.09% |
Dividends
AOS vs. UNH - Dividend Comparison
AOS's dividend yield for the trailing twelve months is around 2.40%, more than UNH's 2.16% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AOS A. O. Smith Corporation | 2.40% | 2.06% | 1.91% | 1.84% | 1.99% | 1.23% | 1.79% | 1.89% | 1.78% | 0.91% | 1.01% | 0.99% |
UNH UnitedHealth Group Incorporated | 2.16% | 2.64% | 1.62% | 1.38% | 1.21% | 1.12% | 1.38% | 1.41% | 1.38% | 1.30% | 1.48% | 1.59% |
Financials
AOS vs. UNH - Financials Comparison
This section allows you to compare key financial metrics between A. O. Smith Corporation and UnitedHealth Group Incorporated. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
AOS vs. UNH - Profitability Comparison
AOS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, A. O. Smith Corporation reported a gross profit of 365.70M and revenue of 945.60M. Therefore, the gross margin over that period was 38.7%.
UNH - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, UnitedHealth Group Incorporated reported a gross profit of 25.41B and revenue of 111.72B. Therefore, the gross margin over that period was 22.7%.
AOS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, A. O. Smith Corporation reported an operating income of 161.80M and revenue of 945.60M, resulting in an operating margin of 17.1%.
UNH - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, UnitedHealth Group Incorporated reported an operating income of 8.99B and revenue of 111.72B, resulting in an operating margin of 8.1%.
AOS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, A. O. Smith Corporation reported a net income of 118.00M and revenue of 945.60M, resulting in a net margin of 12.5%.
UNH - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, UnitedHealth Group Incorporated reported a net income of 6.28B and revenue of 111.72B, resulting in a net margin of 5.6%.
Frequently Asked Questions
AOS and UNH have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AOS has higher volatility (8.06%) compared to UNH (7.60%). In terms of maximum drawdown, AOS dropped -66.07% vs UNH's -74.37%.
UNH currently has the higher Sharpe Ratio (0.80 vs -0.24), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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