PEN vs. BSX
PEN (Penumbra, Inc.) and BSX (Boston Scientific Corporation) are both stocks. Both operate in the Medical Devices industry within the Healthcare sector. Over the past 10 years, PEN returned 16.73%/yr vs 6.81%/yr for BSX. Their 0.39 correlation means their historical movements had little consistent relationship.
Performance
PEN vs. BSX - Performance Comparison
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Returns By Period
In the year-to-date period, PEN achieves a 3.31% return, which is significantly higher than BSX's -50.99% return. Over the past 10 years, PEN has outperformed BSX with an annualized return of 16.73%, while BSX has yielded a comparatively lower 6.81% annualized return.
PEN
- 1D
- 0.43%
- 1M
- 0.82%
- 6M
- -10.32%
- YTD
- 3.31%
- 1Y
- 32.17%
- 3Y*
- 2.49%
- 5Y*
- 3.82%
- 10Y*
- 16.73%
- ALL TIME*
- 21.13%
BSX
- 1D
- 1.59%
- 1M
- 3.52%
- 6M
- -50.04%
- YTD
- -50.99%
- 1Y
- -55.67%
- 3Y*
- -3.43%
- 5Y*
- 0.49%
- 10Y*
- 6.81%
- ALL TIME*
- 7.26%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $1.03B | $866.01M | $1.00B | |
| $134.82M | $123.94M | $132.27M |
PEN vs. BSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PEN Penumbra, Inc. | 3.31% | 30.92% | -5.59% | 13.07% | -22.57% | 64.18% | 6.53% | 34.43% | 29.86% | 47.49% |
BSX Boston Scientific Corporation | -50.99% | 6.75% | 54.51% | 24.94% | 8.92% | 18.16% | -20.50% | 27.96% | 42.56% | 14.61% |
Correlation
The correlation between PEN and BSX is 0.52, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.52 |
Correlation (3Y) Balances recent behavior with more history. | 0.41 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.44 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.41 |
Correlation (All Time) Calculated using the full available price history since Sep 18, 2015 | 0.39 |
The correlation between PEN and BSX shifts across timeframes, from 0.39 (all time) to 0.52 (1 year), reflecting how their relationship changes across market environments.
Fundamentals
PEN:
$12.63B
BSX:
$69.46B
PEN:
$4.07
BSX:
$2.38
PEN:
78.91
BSX:
19.67
PEN:
0.12
BSX:
0.44
PEN:
8.42
BSX:
3.39
PEN:
8.30
BSX:
2.70
PEN:
$1.50B
BSX:
$20.62B
PEN:
$1.02B
BSX:
$14.52B
PEN:
$210.86M
BSX:
$4.76B
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Return for Risk
PEN vs. BSX — Risk / Return Rank
PEN
BSX
PEN vs. BSX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Penumbra, Inc. (PEN) and Boston Scientific Corporation (BSX). 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.
| PEN | BSX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.45 | ||
| Sortino ratioReturn per unit of downside risk | +4.25 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 0.66 | +0.61 |
| Calmar ratioReturn relative to maximum drawdown | 1.28 | -0.92 | +2.20 |
| Martin ratioReturn relative to average drawdown | 3.26 | -1.64 | +4.91 |
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Drawdowns
PEN vs. BSX - Drawdown Comparison
The maximum PEN drawdown since its inception was -62.64%, smaller than the maximum BSX drawdown of -89.15%. Use the drawdown chart below to compare losses from any high point for PEN and BSX.
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Drawdown Indicators
| PEN | BSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -62.64% | -89.15% | +26.51% |
Max Drawdown (1Y)Largest decline over 1 year | -21.44% | -60.58% | +39.14% |
Max Drawdown (3Y)Largest decline over 3 years | -45.46% | -60.58% | +15.12% |
Max Drawdown (5Y)Largest decline over 5 years | -60.14% | -60.58% | +0.44% |
Max Drawdown (10Y)Largest decline over 10 years | -62.64% | -60.58% | -2.06% |
Current DrawdownCurrent decline from peak | -10.63% | -56.79% | +46.16% |
Average DrawdownAverage peak-to-trough decline | -17.49% | -38.83% | +21.34% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 8.43% | 33.75% | -25.32% |
Volatility
PEN vs. BSX - Volatility Comparison
The current volatility for Penumbra, Inc. (PEN) is 1.76%, while Boston Scientific Corporation (BSX) has a volatility of 9.18%. This indicates that PEN experiences smaller price fluctuations and is considered to be less risky than BSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PEN | BSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.76% | 9.18% | -7.42% |
Volatility (6M)Calculated over the trailing 6-month period | 7.28% | 33.80% | -26.52% |
Volatility (1Y)Calculated over the trailing 1-year period | 30.76% | 35.80% | -5.04% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 40.87% | 25.98% | +14.89% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 41.27% | 27.43% | +13.84% |
Dividends
PEN vs. BSX - Dividend Comparison
Neither PEN nor BSX has paid dividends to shareholders.
Financials
PEN vs. BSX - Financials Comparison
This section allows you to compare key financial metrics between Penumbra, Inc. and Boston Scientific 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.
Total Revenue: Total amount of money received from sales and other business activities
PEN vs. BSX - Profitability Comparison
PEN - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Penumbra, Inc. reported a gross profit of 264.94M and revenue of 390.05M. Therefore, the gross margin over that period was 67.9%.
BSX - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Boston Scientific Corporation reported a gross profit of 3.61B and revenue of 5.20B. Therefore, the gross margin over that period was 69.4%.
PEN - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Penumbra, Inc. reported an operating income of 41.04M and revenue of 390.05M, resulting in an operating margin of 10.5%.
BSX - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Boston Scientific Corporation reported an operating income of 1.07B and revenue of 5.20B, resulting in an operating margin of 20.6%.
PEN - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Penumbra, Inc. reported a net income of 34.81M and revenue of 390.05M, resulting in a net margin of 8.9%.
BSX - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Boston Scientific Corporation reported a net income of 1.34B and revenue of 5.20B, resulting in a net margin of 25.7%.
Frequently Asked Questions
PEN and BSX have a correlation of 0.52, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BSX has higher volatility (9.18%) compared to PEN (1.76%). In terms of maximum drawdown, PEN dropped -62.64% vs BSX's -89.15%.
PEN currently has the higher Sharpe Ratio (0.89 vs -1.55), 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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