SIHYvsAHYBETF Comparison
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Harbor Scientific Alpha High-Yield ETF (SIHY) belongs to the US Corporate HY Bonds segment. American Century Select High Yield ETF (AHYB) is part of the Intl HY Bonds segment. SIHY's top 3 sector exposures are Finance, Energy and Technology. In contrast, AHYB's top sector exposures are Finance, Industrials and Consumer Services. SIHY is more expensive with a Total Expense Ratio (TER) of 0.48%, versus 0.45% for AHYB. SIHY is up 1.19% year-to-date (YTD) with -$27M in YTD flows. AHYB performs worse with 0.03% YTD performance, and +$18M in YTD flows. Run a side-by-side ETF comparison of SIHY and AHYB below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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SIHY vs AHYB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SIHY AHYB | -1.19%-1.25% | -1.42%-1.67% | +1.19%+0.03% | +2.85%+1.64% | +29.12%+24.06% | +20.58%n/a |
| Flows | SIHY AHYB | -$13M+$11M | -$10M+$13M | -$27M+$18M | -$16M+$23M | +$25M+$41M | +$105M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SIHY AHYB | +3.12%+2.87% | +2.77%+2.57% | +3.52%+3.12% | +4.70%n/a |
| Max drawdown | SIHY AHYB | -2.63%-2.62% | -2.63%-2.62% | -4.64%-2.97% | -16.05%n/a |
| Max drawdown duration | SIHY AHYB | 50d50d | 50d50d | 97d68d | 771dn/a |
Trading data
SIHY | AHYB | |
Last sale 10/19/2026 at 1:30 PM | $43.98 | $44.61 |
| Previous close 10/16/2026 | $44.02 | $44.63 |
| Consolidated volume 10/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/19/2026 at 1:30 PM
Live
Closed
SIHY | AHYB | |
|---|---|---|
| Last price | $43.98 | $44.61 |
| 1D performance | -0.09% | -0.05% |
| AuM | $135.20 M | $71.38 M |
| E/R | 0.48% | 0.45% |
Characteristics
SIHY | AHYB | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | Harbor Capital | American Century Investments |
| Benchmark | - | - |
| N° of holdings | 208 | 621 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 16, 2021 | November 16, 2021 |
| ESG | No | No |
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Exposure
Countries
SIHY
USA
78.64%
Other
21.36%
AHYB
USA
88.65%
Other
11.35%
Sectors
SIHY
Finance
15.03%
Energy
14.64%
Technology
13.91%
Consumer Cyclical.
9.64%
Industrials
8.56%
Other
38.21%
AHYB
Finance
13.9%
Industrials
13.86%
Consumer Services
12.81%
Energy
11.36%
Non-Energy Materi.
7.92%
Business Services
7.79%
Other
32.35%
Diversification
SIHY
Total weight of top 15 holdings out of 15
17%
AHYB
Total weight of top 15 holdings out of 15
6.15%
Top 15 holdings
Data as of August 31, 2026
SIHY
Carvana, 14% 1jun2031, USD
1.26%
Novelis Corp, 4.75% 30jan2030, USD
1.21%
Victoria's Secret, 4.625% 15jul2029, USD
1.17%
Snap, 6.875% 1mar2033, USD
1.17%
PBF Holding, 7.25% 1jun2034, USD
1.16%
Centene, 2.5% 1mar2031, USD
1.14%
PROG Holdings, 6% 15nov2029, USD
1.13%
Par Petroleum, 7.375% 1jun2034, USD
1.13%
Humana Inc., 6.625% 15sep2056, USD
1.13%
Alliance Resource Operating Partnership, 8.625% 15jun2029, USD
1.12%
Pitney Bowes, 7.25% 15mar2029, USD
1.08%
Talos Production, 8% 15jul2034, USD
1.08%
TTM Technologies, 4% 1mar2029, USD
1.07%
Vermilion Energy Inc, 7.25% 15feb2033, USD
1.07%
DaVita, 3.75% 15feb2031, USD
1.06%
AHYB
CoreWeave, 9.25% 1jun2030, USD
0.49%
Standard Industries, 4.375% 15jul2030, USD
0.47%
Venture Global LNG, 7.75% 1may2035, USD
0.45%
TransDigm, 6.375% 31may2033, USD
0.45%
Coinbase Global, 3.625% 1oct2031, USD
0.43%
Bath & Body Works, 6.625% 1oct2030, USD
0.42%
Olin, 5% 1feb2030, USD
0.40%
Novelis Corp, 4.75% 30jan2030, USD
0.39%
DIRECTV Financing, 10% 15feb2031, USD
0.39%
Genmab, 7.25% 15dec2033, USD
0.38%
Venture Global LNG, 8.375% 1jun2031, USD
0.38%
Virgin Media, 5.5% 15may2029, USD
0.38%
CCO Holdings, 4.25% 15jan2034, USD
0.38%
Starwood Property Trust, 6% 15apr2030, USD
0.37%
Tenet Healthcare, 5.125% 1nov2027, USD
0.37%
Frequently asked questions about SIHY and AHYB
How have the SIHY and AHYB ETFs performed in 2026?
As of October 16, 2026, SIHY is up 1.19% year-to-date (YTD), while AHYB has returned 0.03%. That puts SIHY better performer ahead so far this year.
Which ETF is attracting more investor money: SIHY or AHYB?
Year-to-date, the SIHY ETF saw -$27M in flows, compared to +$18M for AHYB.
Which ETF is more volatile: SIHY or AHYB?
Over the past year, SIHY had a volatility of 2.77%, while AHYB experienced 2.57%.
Which ETF is bigger: SIHY or AHYB?
As of October 16, 2026, SIHY holds $135.20 M in assets under management (AUM), while AHYB manages $71.38 M.
What sectors do the SIHY and AHYB ETFs invest in?
SIHY leans toward sectors like Finance, Energy and Technology. Meanwhile, AHYB focuses on Finance, Industrials and Consumer Services.
What are the top holdings of the SIHY ETF and AHYB ETF?
SIHY top holdings include Carvana, 14% 1jun2031, USD, Novelis Corp, 4.75% 30jan2030, USD and Victoria's Secret, 4.625% 15jul2029, USD. AHYB holds in its top three: CoreWeave, 9.25% 1jun2030, USD, Standard Industries, 4.375% 15jul2030, USD and Venture Global LNG, 7.75% 1may2035, USD.
Which ETF is more diversified: SIHY or AHYB?
SIHY holds 208 securities with 17% of its assets in the top 15. AHYB has 621 securities and a top 15 weight of 6.15%.
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