INSP vs. SHY
INSP (Inspire Medical Systems, Inc.) is a stock, while SHY (iShares 1-3 Year Treasury Bond ETF) is Government Bonds fund tracking the ICE US Treasury 1-3 Year Index. Over the past 5 years, INSP returned -24.51%/yr vs 1.71%/yr for SHY. At a 0.02 correlation, their price movements are largely independent.
Performance
INSP vs. SHY - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, INSP achieves a -56.15% return, which is significantly lower than SHY's 0.43% return.
INSP
- 1D
- -0.34%
- 1M
- -26.26%
- YTD
- -56.15%
- 6M
- -69.99%
- 1Y
- -70.77%
- 3Y*
- -49.27%
- 5Y*
- -24.51%
- 10Y*
- —
SHY
- 1D
- -0.05%
- 1M
- 0.08%
- YTD
- 0.43%
- 6M
- 0.69%
- 1Y
- 3.32%
- 3Y*
- 4.03%
- 5Y*
- 1.71%
- 10Y*
- 1.65%
INSP vs. SHY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
INSP Inspire Medical Systems, Inc. | -56.15% | -50.25% | -8.87% | -19.24% | 9.48% | 22.31% | 153.46% | 75.64% | 69.14% |
SHY iShares 1-3 Year Treasury Bond ETF | 0.43% | 4.95% | 3.92% | 4.16% | -3.88% | -0.71% | 3.03% | 3.38% | 1.78% |
Correlation
The correlation between INSP and SHY is 0.08, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.08 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.09 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.08 |
Correlation (All Time) Calculated using the full available price history since May 4, 2018 | 0.02 |
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
INSP vs. SHY — Risk / Return Rank
INSP
SHY
INSP vs. SHY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Inspire Medical Systems, Inc. (INSP) and iShares 1-3 Year Treasury Bond ETF (SHY). 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.
| INSP | SHY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -3.44 | ||
| Sortino ratioReturn per unit of downside risk | -5.76 | ||
| Omega ratioGain probability vs. loss probability | 0.77 | 1.51 | -0.74 |
| Calmar ratioReturn relative to maximum drawdown | -0.98 | 3.75 | -4.73 |
| Martin ratioReturn relative to average drawdown | -1.58 | 15.21 | -16.79 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| INSP | SHY | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.95 | 2.49 | -3.44 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.41 | 0.87 | -1.28 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 1.06 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.10 | 1.28 | -1.18 |
Drawdowns
INSP vs. SHY - Drawdown Comparison
The maximum INSP drawdown since its inception was -87.72%, which is greater than SHY's maximum drawdown of -5.71%. Use the drawdown chart below to compare losses from any high point for INSP and SHY.
Loading charts...
Drawdown Indicators
| INSP | SHY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -87.72% | -5.71% | -82.01% |
Max Drawdown (1Y)Largest decline over 1 year | -72.19% | -0.89% | -71.30% |
Max Drawdown (3Y)Largest decline over 3 years | -87.72% | -0.97% | -86.75% |
Max Drawdown (5Y)Largest decline over 5 years | -87.72% | -5.71% | -82.01% |
Max Drawdown (10Y)Largest decline over 10 years | — | -5.71% | — |
Current DrawdownCurrent decline from peak | -87.60% | -0.31% | -87.29% |
Average DrawdownAverage peak-to-trough decline | -27.58% | -0.52% | -27.06% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 44.74% | 0.22% | +44.52% |
Volatility
INSP vs. SHY - Volatility Comparison
Inspire Medical Systems, Inc. (INSP) has a higher volatility of 18.19% compared to iShares 1-3 Year Treasury Bond ETF (SHY) at 0.35%. This indicates that INSP's price experiences larger fluctuations and is considered to be riskier than SHY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| INSP | SHY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 18.19% | 0.35% | +17.84% |
Volatility (6M)Calculated over the trailing 6-month period | 48.31% | 0.92% | +47.39% |
Volatility (1Y)Calculated over the trailing 1-year period | 74.63% | 1.34% | +73.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 60.37% | 1.98% | +58.39% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 60.61% | 1.57% | +59.04% |
Dividends
INSP vs. SHY - Dividend Comparison
INSP has not paid dividends to shareholders, while SHY's dividend yield for the trailing twelve months is around 3.68%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
INSP Inspire Medical Systems, 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% |
SHY iShares 1-3 Year Treasury Bond ETF | 3.68% | 3.81% | 3.92% | 2.99% | 1.30% | 0.26% | 0.94% | 2.12% | 1.72% | 0.98% | 0.71% | 0.54% |
Frequently Asked Questions
INSP and SHY have a correlation of 0.08, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
INSP has higher volatility (18.19%) compared to SHY (0.35%). In terms of maximum drawdown, INSP dropped -87.72% vs SHY's -5.71%.
SHY currently has the higher Sharpe Ratio (2.49 vs -0.95), 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.
Find the right allocation for INSP and SHY
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer