IBDT vs. BSX
IBDT (iShares iBonds Dec 2028 Term Corporate ETF) is Corporate Bonds fund tracking the Bloomberg December 2028 Maturity Corporate Index, while BSX (Boston Scientific Corporation) is a stock. Over the past 5 years, IBDT returned 1.25%/yr vs 1.80%/yr for BSX. At a 0.13 correlation, their price movements are largely independent.
Performance
IBDT vs. BSX - Performance Comparison
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Returns By Period
In the year-to-date period, IBDT achieves a 0.92% return, which is significantly higher than BSX's -50.80% return.
IBDT
- 1D
- 0.02%
- 1M
- 0.45%
- YTD
- 0.92%
- 6M
- 1.33%
- 1Y
- 4.61%
- 3Y*
- 5.76%
- 5Y*
- 1.25%
- 10Y*
- —
BSX
- 1D
- -0.55%
- 1M
- -10.95%
- YTD
- -50.80%
- 6M
- -49.33%
- 1Y
- -52.97%
- 3Y*
- -2.85%
- 5Y*
- 1.80%
- 10Y*
- 7.42%
IBDT vs. BSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
IBDT iShares iBonds Dec 2028 Term Corporate ETF | 0.92% | 7.02% | 3.97% | 7.72% | -11.42% | -1.90% | 9.62% | 15.15% | 1.47% |
BSX Boston Scientific Corporation | -50.80% | 6.75% | 54.51% | 24.94% | 8.92% | 18.16% | -20.50% | 27.96% | -5.73% |
Correlation
The correlation between IBDT and BSX is 0.10, 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 | 0.10 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.13 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.15 |
Correlation (All Time) Calculated using the full available price history since Sep 20, 2018 | 0.13 |
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Return for Risk
IBDT vs. BSX — Risk / Return Rank
IBDT
BSX
IBDT vs. BSX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2028 Term Corporate ETF (IBDT) 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.
| IBDT | BSX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +4.32 | ||
| Sortino ratioReturn per unit of downside risk | +6.78 | ||
| Omega ratioGain probability vs. loss probability | 1.59 | 0.67 | +0.92 |
| Calmar ratioReturn relative to maximum drawdown | 4.38 | -0.93 | +5.31 |
| Martin ratioReturn relative to average drawdown | 20.12 | -2.00 | +22.12 |
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Drawdowns
IBDT vs. BSX - Drawdown Comparison
The maximum IBDT drawdown since its inception was -17.79%, smaller than the maximum BSX drawdown of -89.15%. Use the drawdown chart below to compare losses from any high point for IBDT and BSX.
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Drawdown Indicators
| IBDT | BSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.79% | -89.15% | +71.36% |
Max Drawdown (1Y)Largest decline over 1 year | -1.03% | -56.62% | +55.59% |
Max Drawdown (3Y)Largest decline over 3 years | -3.19% | -56.62% | +53.43% |
Max Drawdown (5Y)Largest decline over 5 years | -17.68% | -56.62% | +38.94% |
Max Drawdown (10Y)Largest decline over 10 years | — | -56.62% | — |
Current DrawdownCurrent decline from peak | 0.00% | -56.62% | +56.62% |
Average DrawdownAverage peak-to-trough decline | -4.15% | -38.76% | +34.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.22% | 26.23% | -26.01% |
Volatility
IBDT vs. BSX - Volatility Comparison
The current volatility for iShares iBonds Dec 2028 Term Corporate ETF (IBDT) is 0.44%, while Boston Scientific Corporation (BSX) has a volatility of 15.84%. This indicates that IBDT 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
| IBDT | BSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.44% | 15.84% | -15.40% |
Volatility (6M)Calculated over the trailing 6-month period | 1.07% | 32.83% | -31.76% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.61% | 34.77% | -33.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.07% | 25.69% | -20.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.36% | 27.29% | -20.93% |
Dividends
IBDT vs. BSX - Dividend Comparison
IBDT's dividend yield for the trailing twelve months is around 4.54%, while BSX has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|---|---|---|---|---|
BSX Boston Scientific Corporation | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
IBDT iShares iBonds Dec 2028 Term Corporate ETF | 4.54% | 4.56% | 4.67% | 4.10% | 3.25% | 2.45% | 2.80% | 3.32% | 1.47% |
Frequently Asked Questions
IBDT and BSX have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BSX has higher volatility (15.84%) compared to IBDT (0.44%). In terms of maximum drawdown, IBDT dropped -17.79% vs BSX's -89.15%.
IBDT currently has the higher Sharpe Ratio (2.81 vs -1.51), 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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