SIHY vs. HYDB
SIHY (Harbor Scientific Alpha High-Yield ETF) and HYDB (iShares High Yield Bond Factor ETF) are both High Yield Bonds funds - SIHY tracks the ICE BofA US High Yield while HYDB tracks the BlackRock High Yield Defensive Bond Index. Both are passively managed. Over the past 3 years, SIHY returned 9.71%/yr vs 9.35%/yr for HYDB. Their correlation of 0.89 suggests significant overlap in exposure. SIHY charges 0.48%/yr vs 0.35%/yr for HYDB.
Performance
SIHY vs. HYDB - Performance Comparison
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Returns By Period
In the year-to-date period, SIHY achieves a 2.14% return, which is significantly higher than HYDB's 1.47% return.
SIHY
- 1D
- -0.46%
- 1M
- 0.97%
- YTD
- 2.14%
- 6M
- 2.30%
- 1Y
- 7.33%
- 3Y*
- 9.71%
- 5Y*
- —
- 10Y*
- —
HYDB
- 1D
- -0.11%
- 1M
- 0.41%
- YTD
- 1.47%
- 6M
- 1.60%
- 1Y
- 6.31%
- 3Y*
- 9.35%
- 5Y*
- 4.57%
- 10Y*
- —
SIHY vs. HYDB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
SIHY Harbor Scientific Alpha High-Yield ETF | 2.14% | 8.13% | 8.67% | 13.31% | -7.73% | 0.18% |
HYDB iShares High Yield Bond Factor ETF | 1.47% | 8.10% | 9.11% | 14.02% | -9.99% | 0.31% |
Correlation
The correlation between SIHY and HYDB is 0.76, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.76 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.83 |
Correlation (All Time) Calculated using the full available price history since Sep 16, 2021 | 0.89 |
The correlation between SIHY and HYDB shifts across timeframes, from 0.76 (1 year) to 0.89 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
SIHY vs. HYDB — Risk / Return Rank
SIHY
HYDB
SIHY vs. HYDB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Harbor Scientific Alpha High-Yield ETF (SIHY) and iShares High Yield Bond Factor ETF (HYDB). 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.
| SIHY | HYDB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.09 | ||
| Sortino ratioReturn per unit of downside risk | +0.21 | ||
| Omega ratioGain probability vs. loss probability | 1.33 | 1.32 | +0.02 |
| Calmar ratioReturn relative to maximum drawdown | 2.32 | 2.24 | +0.08 |
| Martin ratioReturn relative to average drawdown | 9.59 | 9.85 | -0.27 |
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Drawdowns
SIHY vs. HYDB - Drawdown Comparison
The maximum SIHY drawdown since its inception was -13.30%, smaller than the maximum HYDB drawdown of -21.58%. Use the drawdown chart below to compare losses from any high point for SIHY and HYDB.
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Drawdown Indicators
| SIHY | HYDB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -13.30% | -21.58% | +8.28% |
Max Drawdown (1Y)Largest decline over 1 year | -3.17% | -2.83% | -0.34% |
Max Drawdown (3Y)Largest decline over 3 years | -5.36% | -5.58% | +0.22% |
Max Drawdown (5Y)Largest decline over 5 years | — | -14.28% | — |
Current DrawdownCurrent decline from peak | -0.46% | -0.31% | -0.15% |
Average DrawdownAverage peak-to-trough decline | -2.75% | -2.38% | -0.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.77% | 0.64% | +0.13% |
Volatility
SIHY vs. HYDB - Volatility Comparison
Harbor Scientific Alpha High-Yield ETF (SIHY) has a higher volatility of 1.22% compared to iShares High Yield Bond Factor ETF (HYDB) at 1.06%. This indicates that SIHY's price experiences larger fluctuations and is considered to be riskier than HYDB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SIHY | HYDB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.22% | 1.06% | +0.16% |
Volatility (6M)Calculated over the trailing 6-month period | 3.16% | 3.02% | +0.14% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.24% | 3.84% | +0.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.55% | 7.05% | +0.50% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.55% | 7.74% | -0.19% |
SIHY vs. HYDB - Expense Ratio Comparison
SIHY has a 0.48% expense ratio, which is higher than HYDB's 0.35% expense ratio.
Dividends
SIHY vs. HYDB - Dividend Comparison
SIHY's dividend yield for the trailing twelve months is around 7.23%, more than HYDB's 6.99% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
HYDB iShares High Yield Bond Factor ETF | 6.99% | 7.04% | 6.95% | 7.00% | 6.30% | 4.70% | 5.81% | 5.68% | 6.16% | 2.70% |
SIHY Harbor Scientific Alpha High-Yield ETF | 7.23% | 7.61% | 7.54% | 7.06% | 6.31% | 1.30% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
SIHY and HYDB have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SIHY has higher volatility (1.22%) compared to HYDB (1.06%). In terms of maximum drawdown, SIHY dropped -13.30% vs HYDB's -21.58%.
On 3-year performance, SIHY leads with 9.71% vs 9.35% for HYDB. On fees, HYDB is cheaper at 0.35% per year. On volatility, HYDB has been the lower-risk option at 1.06%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, SIHY has performed better with a 9.71% return vs 9.35%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
HYDB is cheaper with a 0.35% expense ratio, compared with 0.48% for SIHY.
SIHY has the higher dividend yield at 7.23%, compared with 6.99% for HYDB.
SIHY tracks ICE BofA US High Yield, while HYDB tracks BlackRock High Yield Defensive Bond Index. They also come from different issuers: Harbor and iShares. Their fees differ too: 0.48% for SIHY and 0.35% for HYDB.
SIHY currently has the higher Sharpe Ratio (1.74 vs 1.65), 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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