AMS vs. MUSA

Last updated Jun 3, 2026

AMS (American Shared Hospital Services) and MUSA (Murphy USA Inc.) are both stocks. AMS operates in Medical Care Facilities (Healthcare), while MUSA operates in Specialty Retail (Consumer Cyclical). Over the past 10 years, AMS returned -3.85%/yr vs 22.80%/yr for MUSA. At a 0.03 correlation, their price movements are largely independent.

Performance

AMS vs. MUSA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Shared Hospital Services (AMS) and Murphy USA Inc. (MUSA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AMS achieves a -36.02% return, which is significantly lower than MUSA's 30.75% return. Over the past 10 years, AMS has underperformed MUSA with an annualized return of -3.85%, while MUSA has yielded a comparatively higher 22.80% annualized return.

AMS

• 1D: -6.90%
• 1M: -20.59%
• YTD: -36.02%
• 6M: -34.78%
• 1Y: -43.51%
• 3Y*: -22.14%
• 5Y*: -15.21%
• 10Y*: -3.85%

MUSA

• 1D: 2.03%
• 1M: -11.76%
• YTD: 30.75%
• 6M: 36.15%
• 1Y: 24.51%
• 3Y*: 22.65%
• 5Y*: 31.89%
• 10Y*: 22.80%

*Multi-year figures are annualized to reflect compound growth (CAGR)

AMS vs. MUSA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMS American Shared Hospital Services	-36.02%	-33.86%	34.07%	-18.79%	23.63%	6.76%	-9.02%	2.52%	-8.46%	-22.39%
MUSA Murphy USA Inc.	30.75%	-19.15%	41.27%	28.20%	41.02%	53.33%	12.06%	52.66%	-4.63%	30.73%

Correlation

The correlation between AMS and MUSA is -0.10, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.10
Correlation (3Y) Calculated over the trailing 3-year period	-0.03
Correlation (5Y) Calculated over the trailing 5-year period	-0.00
Correlation (10Y) Calculated over the trailing 10-year period	0.04
Correlation (All Time) Calculated using the full available price history since Aug 20, 2013	0.03

The correlation between AMS and MUSA shifts across timeframes, from -0.10 (1 year) to 0.04 (10 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap AMS : $9.02M MUSA : $9.84B
EPS AMS : -$0.23 MUSA : $28.85
PS Ratio AMS : 0.32 MUSA : 0.51
PB Ratio AMS : 0.00 MUSA : 14.94
Total Revenue (TTM) AMS : $28.08M MUSA : $19.68B
Gross Profit (TTM) AMS : $5.06M MUSA : $487.10M
EBITDA (TTM) AMS : $4.05B MUSA : $1.06B

Return for Risk

AMS vs. MUSA — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AMS

AMS Risk / Return Rank: 10
AMS Sharpe Ratio Rank: 11
AMS Sortino Ratio Rank: 11
AMS Omega Ratio Rank: 11
AMS Calmar Ratio Rank: 12
AMS Martin Ratio Rank: 6

MUSA

MUSA Risk / Return Rank: 60
MUSA Sharpe Ratio Rank: 62
MUSA Sortino Ratio Rank: 55
MUSA Omega Ratio Rank: 57
MUSA Calmar Ratio Rank: 64
MUSA Martin Ratio Rank: 63

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AMS vs. MUSA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Shared Hospital Services (AMS) and Murphy USA Inc. (MUSA). 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.

	AMS	MUSA	Difference
Sharpe ratio Return per unit of total volatility	-0.72	0.65	-1.37
Sortino ratio Return per unit of downside risk	-0.94	1.09	-2.03
Omega ratio Gain probability vs. loss probability	0.87	1.15	-0.28
Calmar ratio Return relative to maximum drawdown	-0.76	1.22	-1.98
Martin ratio Return relative to average drawdown	-1.46	2.52	-3.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMS vs. MUSA - Sharpe Ratio Comparison

The current AMS Sharpe Ratio is -0.72, which is lower than the MUSA Sharpe Ratio of 0.65. The chart below compares the historical Sharpe Ratios of AMS and MUSA, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AMS	MUSA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.72	0.65	-1.37
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.33	1.07	-1.40
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.06	0.73	-0.80
Sharpe Ratio (All Time) Calculated using the full available price history	-0.04	0.76	-0.80

Drawdowns

AMS vs. MUSA - Drawdown Comparison

The maximum AMS drawdown since its inception was -98.40%, which is greater than MUSA's maximum drawdown of -35.54%. Use the drawdown chart below to compare losses from any high point for AMS and MUSA.

Drawdown Indicators

	AMS	MUSA	Difference
Max Drawdown Largest peak-to-trough decline	-98.40%	-35.54%	-62.86%
Max Drawdown (1Y) Largest decline over 1 year	-57.57%	-19.72%	-37.85%
Max Drawdown (3Y) Largest decline over 3 years	-64.17%	-35.54%	-28.63%
Max Drawdown (5Y) Largest decline over 5 years	-65.04%	-35.54%	-29.50%
Max Drawdown (10Y) Largest decline over 10 years	-73.26%	-35.54%	-37.72%
Current Drawdown Current decline from peak	-85.55%	-12.87%	-72.68%
Average Drawdown Average peak-to-trough decline	-67.44%	-9.98%	-57.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	30.23%	9.53%	+20.70%

Volatility

AMS vs. MUSA - Volatility Comparison

American Shared Hospital Services (AMS) has a higher volatility of 29.59% compared to Murphy USA Inc. (MUSA) at 8.54%. This indicates that AMS's price experiences larger fluctuations and is considered to be riskier than MUSA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMS	MUSA	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.59%	8.54%	+21.05%
Volatility (6M) Calculated over the trailing 6-month period	48.63%	28.69%	+19.94%
Volatility (1Y) Calculated over the trailing 1-year period	60.82%	37.98%	+22.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	46.18%	30.10%	+16.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	59.93%	31.18%	+28.75%

Dividends

AMS vs. MUSA - Dividend Comparison

AMS has not paid dividends to shareholders, while MUSA's dividend yield for the trailing twelve months is around 0.46%.

Position	TTM	2025	2024	2023	2022	2021	2020
AMS American Shared Hospital Services	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
MUSA Murphy USA Inc.	0.46%	0.53%	0.36%	0.43%	0.45%	0.52%	0.19%

Financials

AMS vs. MUSA - Profitability Comparison

The chart below illustrates the profitability comparison between American Shared Hospital Services and Murphy USA Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

AMS - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, American Shared Hospital Services reported a gross profit of 906.00K and revenue of 7.73M. Therefore, the gross margin over that period was 11.7%.

MUSA - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Murphy USA Inc. reported a gross profit of 0.00 and revenue of 4.82B. Therefore, the gross margin over that period was 0.0%.

AMS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, American Shared Hospital Services reported an operating income of -219.00K and revenue of 7.73M, resulting in an operating margin of -2.8%.

MUSA - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Murphy USA Inc. reported an operating income of 205.20M and revenue of 4.82B, resulting in an operating margin of 4.3%.

AMS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, American Shared Hospital Services reported a net income of -631.00K and revenue of 7.73M, resulting in a net margin of -8.2%.

MUSA - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Murphy USA Inc. reported a net income of 136.30M and revenue of 4.82B, resulting in a net margin of 2.8%.

Frequently Asked Questions

Can I hold both AMS and MUSA in my portfolio?

AMS and MUSA have a correlation of -0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AMS or MUSA?

AMS has higher volatility (29.59%) compared to MUSA (8.54%). In terms of maximum drawdown, AMS dropped -98.40% vs MUSA's -35.54%.

Which has better risk-adjusted returns?

MUSA currently has the higher Sharpe Ratio (0.65 vs -0.72), 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.