AMPH vs. PERI
AMPH (Amphastar Pharmaceuticals, Inc.) and PERI (Perion Network Ltd.) are both stocks. AMPH operates in Drug Manufacturers - Specialty & Generic (Healthcare), while PERI operates in Internet Content & Information (Communication Services). Over the past 10 years, AMPH returned 2.48%/yr vs 9.82%/yr for PERI. At a 0.16 correlation, their price movements are largely independent.
Performance
AMPH vs. PERI - Performance Comparison
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Returns By Period
In the year-to-date period, AMPH achieves a -24.98% return, which is significantly lower than PERI's -12.11% return. Over the past 10 years, AMPH has underperformed PERI with an annualized return of 2.48%, while PERI has yielded a comparatively higher 9.82% annualized return.
AMPH
- 1D
- -2.14%
- 1M
- 16.13%
- YTD
- -24.98%
- 6M
- -20.50%
- 1Y
- -22.19%
- 3Y*
- -24.72%
- 5Y*
- 0.17%
- 10Y*
- 2.48%
PERI
- 1D
- 1.81%
- 1M
- -19.04%
- YTD
- -12.11%
- 6M
- -15.21%
- 1Y
- -10.99%
- 3Y*
- -37.43%
- 5Y*
- -13.13%
- 10Y*
- 9.82%
AMPH vs. PERI - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AMPH Amphastar Pharmaceuticals, Inc. | -24.98% | -27.88% | -39.97% | 120.74% | 20.31% | 15.81% | 4.25% | -3.07% | 3.43% | 4.45% |
PERI Perion Network Ltd. | -12.11% | 13.11% | -72.56% | 22.02% | 5.20% | 88.92% | 104.66% | 139.23% | -15.86% | -27.46% |
Correlation
The correlation between AMPH and PERI is 0.21, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.21 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.15 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.17 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.16 |
Correlation (All Time) Calculated using the full available price history since Jun 25, 2014 | 0.16 |
Fundamentals
AMPH:
$933.34M
PERI:
$329.25M
AMPH:
$1.67
PERI:
-$0.23
AMPH:
1.32
PERI:
0.78
AMPH:
1.21
PERI:
0.51
AMPH:
$720.53M
PERI:
$440.96M
AMPH:
$341.13M
PERI:
$146.71M
AMPH:
$155.96M
PERI:
$4.33M
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Return for Risk
AMPH vs. PERI — Risk / Return Rank
AMPH
PERI
AMPH vs. PERI - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Amphastar Pharmaceuticals, Inc. (AMPH) and Perion Network Ltd. (PERI). 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.
| AMPH | PERI | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.10 | ||
| Sortino ratioReturn per unit of downside risk | -0.06 | ||
| Omega ratioGain probability vs. loss probability | 0.95 | 0.97 | -0.02 |
| Calmar ratioReturn relative to maximum drawdown | -0.53 | -0.41 | -0.12 |
| Martin ratioReturn relative to average drawdown | -1.07 | -0.79 | -0.28 |
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Drawdowns
AMPH vs. PERI - Drawdown Comparison
The maximum AMPH drawdown since its inception was -74.05%, smaller than the maximum PERI drawdown of -95.14%. Use the drawdown chart below to compare losses from any high point for AMPH and PERI.
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Drawdown Indicators
| AMPH | PERI | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -74.05% | -95.14% | +21.09% |
Max Drawdown (1Y)Largest decline over 1 year | -45.25% | -32.55% | -12.70% |
Max Drawdown (3Y)Largest decline over 3 years | -74.05% | -80.65% | +6.60% |
Max Drawdown (5Y)Largest decline over 5 years | -74.05% | -83.08% | +9.03% |
Max Drawdown (10Y)Largest decline over 10 years | -74.05% | -83.08% | +9.03% |
Current DrawdownCurrent decline from peak | -69.09% | -80.91% | +11.82% |
Average DrawdownAverage peak-to-trough decline | -24.08% | -56.77% | +32.69% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 22.54% | 16.87% | +5.67% |
Volatility
AMPH vs. PERI - Volatility Comparison
The current volatility for Amphastar Pharmaceuticals, Inc. (AMPH) is 12.20%, while Perion Network Ltd. (PERI) has a volatility of 19.93%. This indicates that AMPH experiences smaller price fluctuations and is considered to be less risky than PERI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AMPH | PERI | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 12.20% | 19.93% | -7.73% |
Volatility (6M)Calculated over the trailing 6-month period | 46.17% | 29.16% | +17.01% |
Volatility (1Y)Calculated over the trailing 1-year period | 53.78% | 38.91% | +14.87% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 45.07% | 53.69% | -8.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 42.71% | 58.80% | -16.09% |
Dividends
AMPH vs. PERI - Dividend Comparison
Neither AMPH nor PERI has paid dividends to shareholders.
Financials
AMPH vs. PERI - Financials Comparison
This section allows you to compare key financial metrics between Amphastar Pharmaceuticals, Inc. and Perion Network Ltd.. 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
AMPH vs. PERI - Profitability Comparison
AMPH - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Amphastar Pharmaceuticals, Inc. reported a gross profit of 70.32M and revenue of 171.17M. Therefore, the gross margin over that period was 41.1%.
PERI - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Perion Network Ltd. reported a gross profit of 27.36M and revenue of 90.37M. Therefore, the gross margin over that period was 30.3%.
AMPH - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Amphastar Pharmaceuticals, Inc. reported an operating income of 13.63M and revenue of 171.17M, resulting in an operating margin of 8.0%.
PERI - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Perion Network Ltd. reported an operating income of -15.26M and revenue of 90.37M, resulting in an operating margin of -16.9%.
AMPH - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Amphastar Pharmaceuticals, Inc. reported a net income of 6.42M and revenue of 171.17M, resulting in a net margin of 3.8%.
PERI - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Perion Network Ltd. reported a net income of -10.00M and revenue of 90.37M, resulting in a net margin of -11.1%.
Frequently Asked Questions
AMPH and PERI have a correlation of 0.21, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PERI has higher volatility (19.93%) compared to AMPH (12.20%). In terms of maximum drawdown, AMPH dropped -74.05% vs PERI's -95.14%.
PERI currently has the higher Sharpe Ratio (-0.35 vs -0.45), 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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