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AMPH vs. COST
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility
Financials

Correlation

The correlation between AMPH and COST is 0.56, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.


Performance

AMPH vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Amphastar Pharmaceuticals, Inc. (AMPH) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

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Key characteristics

Sharpe Ratio

AMPH:

-0.99

COST:

1.29

Sortino Ratio

AMPH:

-1.38

COST:

1.81

Omega Ratio

AMPH:

0.83

COST:

1.24

Calmar Ratio

AMPH:

-0.60

COST:

1.65

Martin Ratio

AMPH:

-1.26

COST:

4.74

Ulcer Index

AMPH:

30.84%

COST:

6.04%

Daily Std Dev

AMPH:

39.69%

COST:

22.13%

Max Drawdown

AMPH:

-64.63%

COST:

-53.39%

Current Drawdown

AMPH:

-60.45%

COST:

-3.28%

Fundamentals

Market Cap

AMPH:

$1.21B

COST:

$461.51B

EPS

AMPH:

$2.76

COST:

$17.68

PE Ratio

AMPH:

9.32

COST:

58.83

PEG Ratio

AMPH:

2.77

COST:

5.51

PS Ratio

AMPH:

1.66

COST:

1.72

PB Ratio

AMPH:

1.61

COST:

18.04

Total Revenue (TTM)

AMPH:

$728.26M

COST:

$205.57B

Gross Profit (TTM)

AMPH:

$365.89M

COST:

$27.77B

EBITDA (TTM)

AMPH:

$255.58M

COST:

$8.41B

Returns By Period

In the year-to-date period, AMPH achieves a -30.76% return, which is significantly lower than COST's 13.80% return. Over the past 10 years, AMPH has underperformed COST with an annualized return of 5.00%, while COST has yielded a comparatively higher 24.24% annualized return.


AMPH

YTD

-30.76%

1M

7.66%

6M

-43.11%

1Y

-39.26%

3Y*

-11.54%

5Y*

6.64%

10Y*

5.00%

COST

YTD

13.80%

1M

4.25%

6M

7.29%

1Y

29.10%

3Y*

32.50%

5Y*

29.64%

10Y*

24.24%

*Annualized

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Amphastar Pharmaceuticals, Inc.

Costco Wholesale Corporation

Go deeper with the Portfolio Analysis tool — backtest performance, assess risk, compare to benchmarks, and more

Risk-Adjusted Performance

AMPH vs. COST — Risk-Adjusted Performance Rank

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

AMPH
The Risk-Adjusted Performance Rank of AMPH is 99
Overall Rank
The Sharpe Ratio Rank of AMPH is 44
Sharpe Ratio Rank
The Sortino Ratio Rank of AMPH is 77
Sortino Ratio Rank
The Omega Ratio Rank of AMPH is 88
Omega Ratio Rank
The Calmar Ratio Rank of AMPH is 1313
Calmar Ratio Rank
The Martin Ratio Rank of AMPH is 1515
Martin Ratio Rank

COST
The Risk-Adjusted Performance Rank of COST is 8585
Overall Rank
The Sharpe Ratio Rank of COST is 8787
Sharpe Ratio Rank
The Sortino Ratio Rank of COST is 8282
Sortino Ratio Rank
The Omega Ratio Rank of COST is 8181
Omega Ratio Rank
The Calmar Ratio Rank of COST is 9090
Calmar Ratio Rank
The Martin Ratio Rank of COST is 8585
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

AMPH vs. COST - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Amphastar Pharmaceuticals, Inc. (AMPH) and Costco Wholesale Corporation (COST). 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.


The current AMPH Sharpe Ratio is -0.99, which is lower than the COST Sharpe Ratio of 1.29. The chart below compares the historical Sharpe Ratios of AMPH and COST, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


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Go to the full Sharpe Ratio tool to analyze any stock or portfolio. Customize time frames, set your own risk-free rate, and more

Dividends

AMPH vs. COST - Dividend Comparison

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


TTM20242023202220212020201920182017201620152014
AMPH
Amphastar Pharmaceuticals, Inc.
0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%
COST
Costco Wholesale Corporation
0.46%0.49%2.87%0.76%0.54%3.38%0.86%1.08%4.81%1.09%4.06%0.97%

Drawdowns

AMPH vs. COST - Drawdown Comparison

The maximum AMPH drawdown since its inception was -64.63%, which is greater than COST's maximum drawdown of -53.39%. Use the drawdown chart below to compare losses from any high point for AMPH and COST.


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Go to the full Drawdowns tool for more analysis options, including inflation-adjusted drawdowns, and more

Volatility

AMPH vs. COST - Volatility Comparison

Amphastar Pharmaceuticals, Inc. (AMPH) has a higher volatility of 11.45% compared to Costco Wholesale Corporation (COST) at 5.12%. This indicates that AMPH's price experiences larger fluctuations and is considered to be riskier than COST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


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Financials

AMPH vs. COST - Financials Comparison

This section allows you to compare key financial metrics between Amphastar Pharmaceuticals, Inc. and Costco Wholesale Corporation. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.


Quarterly
Annual

Total Revenue: Total amount of money received from sales and other business activities


0.0020.00B40.00B60.00B80.00B20212022202320242025
170.53M
63.72B
(AMPH) Total Revenue
(COST) Total Revenue
Values in USD except per share items

AMPH vs. COST - Profitability Comparison

The chart below illustrates the profitability comparison between Amphastar Pharmaceuticals, Inc. and Costco Wholesale Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

Gross Margin
Operating Margin
Net Margin
Quarterly
Annual

10.0%20.0%30.0%40.0%50.0%60.0%20212022202320242025
50.0%
15.1%
(AMPH) Gross Margin
(COST) Gross Margin
AMPH - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2025, Amphastar Pharmaceuticals, Inc. reported a gross profit of 85.25M and revenue of 170.53M. Therefore, the gross margin over that period was 50.0%.

COST - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2025, Costco Wholesale Corporation reported a gross profit of 9.61B and revenue of 63.72B. Therefore, the gross margin over that period was 15.1%.

AMPH - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2025, Amphastar Pharmaceuticals, Inc. reported an operating income of 37.29M and revenue of 170.53M, resulting in an operating margin of 21.9%.

COST - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2025, Costco Wholesale Corporation reported an operating income of 2.32B and revenue of 63.72B, resulting in an operating margin of 3.6%.

AMPH - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2025, Amphastar Pharmaceuticals, Inc. reported a net income of 25.29M and revenue of 170.53M, resulting in a net margin of 14.8%.

COST - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2025, Costco Wholesale Corporation reported a net income of 1.79B and revenue of 63.72B, resulting in a net margin of 2.8%.