AMPH vs. CORT

Last updated Apr 1, 2026

Compare and contrast key facts about Amphastar Pharmaceuticals, Inc. (AMPH) and Corcept Therapeutics Incorporated (CORT).

Performance

AMPH vs. CORT - Performance Comparison

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

AMPH vs. CORT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMPH Amphastar Pharmaceuticals, Inc.	-26.85%	-27.88%	-39.97%	120.74%	20.31%	15.81%	4.25%	-3.07%	3.43%	4.45%
CORT Corcept Therapeutics Incorporated	15.83%	-30.94%	55.14%	59.92%	2.58%	-24.31%	116.20%	-9.43%	-26.02%	148.76%

Fundamentals

EPS AMPH : $2.06 CORT : $0.88
PE Ratio AMPH : 9.52 CORT : 45.97
PEG Ratio AMPH : 0.50 CORT : 22.90
PS Ratio AMPH : 1.30 CORT : 6.52
Total Revenue (TTM) AMPH : $719.89M CORT : $741.17M
Gross Profit (TTM) AMPH : $356.06M CORT : $727.78M
EBITDA (TTM) AMPH : $191.74M CORT : $72.46M

Returns By Period

In the year-to-date period, AMPH achieves a -26.85% return, which is significantly lower than CORT's 15.83% return. Over the past 10 years, AMPH has underperformed CORT with an annualized return of 4.43%, while CORT has yielded a comparatively higher 23.92% annualized return.

AMPH

• 1D: 1.93%
• 1M: -3.16%
• YTD: -26.85%
• 6M: -26.49%
• 1Y: -32.42%
• 3Y*: -19.46%
• 5Y*: 1.61%
• 10Y*: 4.43%

CORT

• 1D: 5.75%
• 1M: 12.91%
• YTD: 15.83%
• 6M: -51.50%
• 1Y: -64.71%
• 3Y*: 23.00%
• 5Y*: 10.53%
• 10Y*: 23.92%

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

Return for Risk

AMPH vs. CORT — Risk / Return Rank

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

AMPH

AMPH Risk / Return Rank: 13
AMPH Sharpe Ratio Rank: 13
AMPH Sortino Ratio Rank: 16
AMPH Omega Ratio Rank: 15
AMPH Calmar Ratio Rank: 15
AMPH Martin Ratio Rank: 6

CORT

CORT Risk / Return Rank: 18
CORT Sharpe Ratio Rank: 8
CORT Sortino Ratio Rank: 12
CORT Omega Ratio Rank: 7
CORT Calmar Ratio Rank: 31
CORT Martin Ratio Rank: 33

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.

AMPH vs. CORT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Amphastar Pharmaceuticals, Inc. (AMPH) and Corcept Therapeutics Incorporated (CORT). 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.

	AMPH	CORT	Difference
Sharpe ratio Return per unit of total volatility	-0.66	-0.82	+0.16
Sortino ratio Return per unit of downside risk	-0.73	-0.96	+0.24
Omega ratio Gain probability vs. loss probability	0.90	0.82	+0.08
Calmar ratio Return relative to maximum drawdown	-0.76	-0.36	-0.39
Martin ratio Return relative to average drawdown	-1.67	-0.58	-1.09
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMPH vs. CORT - Sharpe Ratio Comparison

The current AMPH Sharpe Ratio is -0.66, which is comparable to the CORT Sharpe Ratio of -0.82. The chart below compares the historical Sharpe Ratios of AMPH and CORT, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	AMPH	CORT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.66	-0.82	+0.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.04	0.14	-0.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.11	0.36	-0.25
Sharpe Ratio (All Time) Calculated using the full available price history	0.17	0.07	+0.09

Correlation

The correlation between AMPH and CORT is 0.31, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

AMPH vs. CORT - Dividend Comparison

Neither AMPH nor CORT has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

AMPH vs. CORT - Drawdown Comparison

The maximum AMPH drawdown since its inception was -72.04%, smaller than the maximum CORT drawdown of -94.28%. Use the drawdown chart below to compare losses from any high point for AMPH and CORT.

Drawdown Indicators

	AMPH	CORT	Difference
Max Drawdown Largest peak-to-trough decline	-72.04%	-94.28%	+22.24%
Max Drawdown (1Y) Largest decline over 1 year	-41.01%	-65.03%	+24.02%
Max Drawdown (5Y) Largest decline over 5 years	-72.04%	-71.85%	-0.19%
Max Drawdown (10Y) Largest decline over 10 years	-72.04%	-71.85%	-0.19%
Current Drawdown Current decline from peak	-69.86%	-64.71%	-5.15%
Average Drawdown Average peak-to-trough decline	-23.32%	-53.45%	+30.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	18.61%	45.10%	-26.49%

Volatility

AMPH vs. CORT - Volatility Comparison

The current volatility for Amphastar Pharmaceuticals, Inc. (AMPH) is 12.83%, while Corcept Therapeutics Incorporated (CORT) has a volatility of 21.99%. This indicates that AMPH experiences smaller price fluctuations and is considered to be less risky than CORT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMPH	CORT	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.83%	21.99%	-9.16%
Volatility (6M) Calculated over the trailing 6-month period	38.92%	85.27%	-46.35%
Volatility (1Y) Calculated over the trailing 1-year period	49.46%	134.82%	-85.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	43.53%	73.97%	-30.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.12%	67.09%	-24.97%

Financials

AMPH vs. CORT - Profitability Comparison

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

AMPH - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Amphastar Pharmaceuticals, Inc. reported a gross profit of 85.67M and revenue of 183.11M. Therefore, the gross margin over that period was 46.8%.

CORT - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Corcept Therapeutics Incorporated reported a gross profit of 203.04M and revenue of 207.64M. Therefore, the gross margin over that period was 97.8%.

AMPH - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Amphastar Pharmaceuticals, Inc. reported an operating income of 35.61M and revenue of 183.11M, resulting in an operating margin of 19.5%.

CORT - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Corcept Therapeutics Incorporated reported an operating income of 10.22M and revenue of 207.64M, resulting in an operating margin of 4.9%.

AMPH - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Amphastar Pharmaceuticals, Inc. reported a net income of 24.43M and revenue of 183.11M, resulting in a net margin of 13.3%.

CORT - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Corcept Therapeutics Incorporated reported a net income of 19.36M and revenue of 207.64M, resulting in a net margin of 9.3%.