SPOK vs. AMRN
SPOK (Spok Holdings, Inc.) and AMRN (Amarin Corporation plc) are both stocks. Both are in the Healthcare sector — SPOK in Health Information Services, AMRN in Biotechnology. Over the past 10 years, SPOK returned 1.81%/yr vs -13.89%/yr for AMRN. Their 0.10 correlation means their historical movements had little consistent relationship.
Performance
SPOK vs. AMRN - Performance Comparison
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Returns By Period
In the year-to-date period, SPOK achieves a -12.62% return, which is significantly lower than AMRN's 2.19% return. Over the past 10 years, SPOK has outperformed AMRN with an annualized return of 1.81%, while AMRN has yielded a comparatively lower -13.89% annualized return.
SPOK
- 1D
- 1.40%
- 1M
- 3.91%
- 6M
- -16.30%
- YTD
- -12.62%
- 1Y
- -35.13%
- 3Y*
- 0.07%
- 5Y*
- 16.79%
- 10Y*
- 1.81%
- ALL TIME*
- 2.81%
AMRN
- 1D
- 0.21%
- 1M
- -12.89%
- 6M
- -4.42%
- YTD
- 2.19%
- 1Y
- -5.94%
- 3Y*
- -15.70%
- 5Y*
- -29.66%
- 10Y*
- -13.89%
- ALL TIME*
- -18.30%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $774.72K | $965.69K | $1.09M | |
| $1.53M | $1.52M | $1.83M |
SPOK vs. AMRN - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPOK Spok Holdings, Inc. | -12.62% | -10.96% | 12.06% | 107.98% | 2.88% | -11.89% | -4.22% | -4.21% | -12.37% | -22.32% |
AMRN Amarin Corporation plc | 2.19% | 43.87% | -44.25% | -28.10% | -64.09% | -31.08% | -77.19% | 57.53% | 239.40% | 30.19% |
Correlation
The correlation between SPOK and AMRN is 0.01, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.01 |
Correlation (3Y) Balances recent behavior with more history. | 0.14 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.16 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.16 |
Correlation (All Time) Calculated using the full available price history since Nov 17, 2004 | 0.10 |
The correlation between SPOK and AMRN shifts across timeframes, from 0.01 (1 year) to 0.16 (10 years), reflecting how their relationship changes across market environments.
Fundamentals
SPOK:
$227.67M
AMRN:
$294.94M
SPOK:
$0.78
AMRN:
-$0.23
SPOK:
1.69
AMRN:
9.42
SPOK:
1.65
AMRN:
13.39
SPOK:
$135.97M
AMRN:
$181.22M
SPOK:
$119.83M
AMRN:
$77.40M
SPOK:
$19.63M
AMRN:
-$24.61M
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Return for Risk
SPOK vs. AMRN — Risk / Return Rank
SPOK
AMRN
SPOK vs. AMRN - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Spok Holdings, Inc. (SPOK) and Amarin Corporation plc (AMRN). 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.
| SPOK | AMRN | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.15 | ||
| Sortino ratioReturn per unit of downside risk | -1.80 | ||
| Omega ratioGain probability vs. loss probability | 0.78 | 1.03 | -0.26 |
| Calmar ratioReturn relative to maximum drawdown | -0.87 | -0.05 | -0.81 |
| Martin ratioReturn relative to average drawdown | -1.21 | -0.08 | -1.13 |
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Drawdowns
SPOK vs. AMRN - Drawdown Comparison
The maximum SPOK drawdown since its inception was -73.90%, smaller than the maximum AMRN drawdown of -99.97%. Use the drawdown chart below to compare losses from any high point for SPOK and AMRN.
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Drawdown Indicators
| SPOK | AMRN | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -73.90% | -99.97% | +26.07% |
Max Drawdown (1Y)Largest decline over 1 year | -39.88% | -33.33% | -6.55% |
Max Drawdown (3Y)Largest decline over 3 years | -39.88% | -70.36% | +30.48% |
Max Drawdown (5Y)Largest decline over 5 years | -39.88% | -93.15% | +53.27% |
Max Drawdown (10Y)Largest decline over 10 years | -62.99% | -98.34% | +35.35% |
Current DrawdownCurrent decline from peak | -36.00% | -99.95% | +63.95% |
Average DrawdownAverage peak-to-trough decline | -28.16% | -90.44% | +62.28% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 28.54% | 23.15% | +5.39% |
Volatility
SPOK vs. AMRN - Volatility Comparison
The current volatility for Spok Holdings, Inc. (SPOK) is 4.85%, while Amarin Corporation plc (AMRN) has a volatility of 7.37%. This indicates that SPOK experiences smaller price fluctuations and is considered to be less risky than AMRN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPOK | AMRN | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.85% | 7.37% | -2.52% |
Volatility (6M)Calculated over the trailing 6-month period | 22.10% | 26.69% | -4.59% |
Volatility (1Y)Calculated over the trailing 1-year period | 30.05% | 44.74% | -14.69% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 34.06% | 69.24% | -35.18% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 36.14% | 121.51% | -85.37% |
Dividends
SPOK vs. AMRN - Dividend Comparison
SPOK's dividend yield for the trailing twelve months is around 11.47%, while AMRN has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMRN Amarin Corporation plc | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
SPOK Spok Holdings, Inc. | 11.47% | 9.48% | 7.79% | 8.07% | 15.26% | 5.36% | 4.49% | 4.09% | 3.77% | 3.19% | 3.61% | 3.41% |
Financials
SPOK vs. AMRN - Financials Comparison
This section allows you to compare key financial metrics between Spok Holdings, Inc. and Amarin Corporation plc. 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
SPOK vs. AMRN - Profitability Comparison
SPOK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Spok Holdings, Inc. reported a gross profit of 29.17M and revenue of 35.01M. Therefore, the gross margin over that period was 83.3%.
AMRN - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Amarin Corporation plc reported a gross profit of 14.99M and revenue of 39.08M. Therefore, the gross margin over that period was 38.4%.
SPOK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Spok Holdings, Inc. reported an operating income of 5.10M and revenue of 35.01M, resulting in an operating margin of 14.6%.
AMRN - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Amarin Corporation plc reported an operating income of -11.97M and revenue of 39.08M, resulting in an operating margin of -30.6%.
SPOK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Spok Holdings, Inc. reported a net income of 8.42M and revenue of 35.01M, resulting in a net margin of 24.1%.
AMRN - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Amarin Corporation plc reported a net income of -7.65M and revenue of 39.08M, resulting in a net margin of -19.6%.
Frequently Asked Questions
SPOK and AMRN have a correlation of 0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AMRN has higher volatility (7.37%) compared to SPOK (4.85%). In terms of maximum drawdown, SPOK dropped -73.90% vs AMRN's -99.97%.
AMRN currently has the higher Sharpe Ratio (-0.04 vs -1.19), 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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