Harbor Scientific Alpha High Yield ETF (SIHY) Performance
SIHY total return
Distributions reinvested · as of Oct 23, 2026- YTD
- +1.0% since Dec 31, 2025
- 1 year
- +2.4% total return
- 5 years
- +4.6% a year
- Since first price
- +4.3% a year since 2021
SIHY trailing returns vs AGG, TLT, SPY
| Period | SIHY total return | Price only | U.S. bonds (AGG) | 20+ yr Treasuries (TLT) | S&P 500 (SPY) |
|---|---|---|---|---|---|
| 1 month | −0.8% | −1.3% | +0.9% | +1.5% | −1.0% |
| 3 months | −0.7% | −2.2% | −0.4% | −1.0% | +3.2% |
| 6 months | +0.2% | −2.8% | −1.5% | −3.8% | +7.8% |
| YTD | +1.0% | −3.4% | −1.0% | −3.4% | +12.3% |
| 1 year | +2.4% | −4.4% | −1.1% | −6.9% | +14.4% |
| 3 years | +29.8%+9.1%/yr | +4.5% | +16.6%+5.2%/yr | +9.7%+3.1%/yr | +87.4%+23.3%/yr |
| 5 years | +25.2%+4.6%/yr | −11.2% | −0.8%−0.2%/yr | −32.5%−7.6%/yr | +79.3%+12.4%/yr |
| Since inceptionSep 16, 2021 | +24.1%+4.3%/yr | −12.0% | — | — | — |
Total return from adjusted closes (distributions reinvested, before tax). Periods of 3 years or more are also shown annualized. Price only excludes distributions.
Growth of $10,000: SIHY vs AGG
From Sep 16, 2021: SIHY grew to $12,411, AGG to $9,777.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
SIHY returns by calendar year
3 of 4 full years positive. Best 2023 (+13.3%), worst 2022 (−7.7%). 2026 is year to date.
SIHY annual returns table
| Year | SIHY | Largest drop | AGG | TLT | SPY |
|---|---|---|---|---|---|
| 2026YTD | +1.0% | −3.2% | −1.0% | −3.4% | +12.3% |
| 2025 | +8.1% | −5.4% | +7.2% | +4.3% | +17.7% |
| 2024 | +8.7% | −2.1% | +1.3% | −8.1% | +24.9% |
| 2023 | +13.3% | −4.2% | +5.7% | +2.8% | +26.2% |
| 2022 | −7.7% | −13.1% | −13.0% | −31.2% | −18.2% |
Largest drop = deepest fall from a high within that calendar year.
Calendar-year return vs largest drop within the year
Most years include a sizable fall at some point even when the year ends higher.
SIHY largest drawdowns
Now 2.2% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Dec 27, 2021 | −13.3% | Sep 27, 2022 | Nov 28, 2023 | 9 months | 1.9 years |
| Feb 24, 2025 | −5.4% | Apr 8, 2025 | Jun 6, 2025 | 43 days | 3 months |
Declines from a closing high (distributions reinvested) of 5% or more. Underwater = time from the peak until the old high was regained.
SIHY risk statistics
| Statistic | 3 years | 5 years |
|---|---|---|
| Annualized return | +8.6% | +4.5% |
| Volatility (annualized) | 5.2% | 7.3% |
| Sharpe ratio | 0.77 | 0.15 |
| Sortino ratio | 1.37 | 0.21 |
| Best month | +4.7% | +5.6% |
| Worst month | −2.5% | −6.7% |
| Best 12 months | +17.4% | +17.4% |
| Worst 12 months | +2.0% | −12.4% |
| Positive months | 67% | 58% |
| Beta vs S&P 500 | 0.32 | 0.39 |
| Correlation with S&P 500 | 0.77 | 0.83 |
From monthly total returns. Sharpe and Sortino use 1–3 month T-bills (BIL) as the risk-free rate, so they need history from 2007 on.
SIHY rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 50 | −12.4% | +7.8% | +17.4% | 86% |
| 3-year (a year) | 26 | +4.2% | +8.7% | +11.7% | 100% |
| 5-year (a year) | 2 | +4.5% | +4.5% | +4.6% | 100% |
Every holding period starting at a month-end since 2021. Returns for 3 years and longer are annualized.
SIHY performance overview
Harbor Scientific Alpha High Yield ETF (SIHY) returned +2.4% over the past year and +4.6% a year over five years, with distributions reinvested. Since its first recorded price in 2021 it has returned +4.3% a year, turning $10,000 into about $12,411. Over the same year U.S. bonds (AGG) returned −1.1%.
The deepest decline was −13.3%, from Dec 27, 2021 to Sep 27, 2022, and it took 1.2 years to get back to the old high. SIHY finished 3 of its 4 full calendar years with a gain; the best year was 2023 (+13.3%) and the worst 2022 (−7.7%). Volatility has been 7.3% a year.
Related: SIHY chart, SIHY holdings, SIHY dividends, SIHY bond profile. See the SIHY overview for the latest quote and fund facts.
SIHY performance FAQ
What is the SIHY return over the past year?
SIHY returned +2.4% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it fell 4.4%.
What is the average annual return of SIHY?
SIHY has returned +4.6% a year over 5 years, +4.3% a year since September 16, 2021 (total return, distributions reinvested).
How much would $10,000 invested in SIHY be worth?
$10,000 invested in SIHY at its first recorded close on September 16, 2021 would be worth about $12,411 on October 23, 2026 with distributions reinvested.
What was the worst year for SIHY?
The worst calendar year was 2022, with a total return of −7.7%. The best was 2023 at +13.3%.
What is the biggest drawdown of SIHY?
The largest peak-to-trough decline was −13.3% between December 27, 2021 and September 27, 2022. It recovered to the old high on November 28, 2023, 1.2 years after the bottom.
How volatile is SIHY?
Over the past 3 years SIHY had an annualized volatility of 5.2% and a Sharpe ratio of 0.77 (excess return over 1–3 month T-bills per unit of risk).