AHYB vs. XB

Last updated Jun 5, 2026

AHYB (American Century Select High Yield ETF) and XB (BondBloxx B Rated USD High Yield Corporate Bond ETF) are both High Yield Bonds funds - AHYB tracks the ICE BofA US High Yield Constrained (BB) while XB tracks the ICE BofA Single-B US Cash Pay High Yield Constrained Index. Both are passively managed. Over the past 3 years, AHYB returned 8.04%/yr vs 8.50%/yr for XB. Their correlation of 0.90 suggests significant overlap in exposure. AHYB charges 0.45%/yr vs 0.30%/yr for XB.

Performance

AHYB vs. XB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Select High Yield ETF (AHYB) and BondBloxx B Rated USD High Yield Corporate Bond ETF (XB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AHYB achieves a 1.31% return, which is significantly lower than XB's 1.99% return.

AHYB

• 1D: 0.18%
• 1M: 0.40%
• YTD: 1.31%
• 6M: 2.00%
• 1Y: 6.50%
• 3Y*: 8.04%
• 5Y*: —
• 10Y*: —

XB

• 1D: 0.17%
• 1M: 0.64%
• YTD: 1.99%
• 6M: 2.60%
• 1Y: 7.31%
• 3Y*: 8.50%
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

AHYB vs. XB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
AHYB American Century Select High Yield ETF	1.31%	8.96%	6.32%	11.69%	-3.24%
XB BondBloxx B Rated USD High Yield Corporate Bond ETF	1.99%	7.81%	7.41%	12.94%	-4.25%

Correlation

The correlation between AHYB and XB is 0.82, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (All Time) Calculated using the full available price history since May 27, 2022	0.90

The correlation between AHYB and XB has been stable across timeframes, ranging from 0.82 to 0.90 - a consistent structural relationship.

Return for Risk

AHYB vs. XB — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AHYB

AHYB Risk / Return Rank: 62
AHYB Sharpe Ratio Rank: 59
AHYB Sortino Ratio Rank: 63
AHYB Omega Ratio Rank: 64
AHYB Calmar Ratio Rank: 56
AHYB Martin Ratio Rank: 69

XB

XB Risk / Return Rank: 68
XB Sharpe Ratio Rank: 59
XB Sortino Ratio Rank: 67
XB Omega Ratio Rank: 66
XB Calmar Ratio Rank: 69
XB Martin Ratio Rank: 79

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AHYB vs. XB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Select High Yield ETF (AHYB) and BondBloxx B Rated USD High Yield Corporate Bond ETF (XB). 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.

	AHYB	XB	Difference
Sharpe ratio: Return per unit of total volatility	1.95	1.97	-0.02
Sortino ratio: Return per unit of downside risk	2.91	3.03	-0.13
Omega ratio: Gain probability vs. loss probability	1.38	1.39	-0.01
Calmar ratio: Return relative to maximum drawdown	2.71	3.40	-0.69
Martin ratio: Return relative to average drawdown	12.65	14.93	-2.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AHYB vs. XB - Sharpe Ratio Comparison

The current AHYB Sharpe Ratio is 1.95, which is comparable to the XB Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of AHYB and XB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AHYB	XB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.95	1.97	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.54	0.85	-0.31

Drawdowns

AHYB vs. XB - Drawdown Comparison

The maximum AHYB drawdown since its inception was -14.76%, which is greater than XB's maximum drawdown of -9.25%. Use the drawdown chart below to compare losses from any high point for AHYB and XB.

Drawdown Indicators

	AHYB	XB	Difference
Max Drawdown Largest peak-to-trough decline	-14.76%	-9.25%	-5.51%
Max Drawdown (1Y) Largest decline over 1 year	-2.41%	-2.16%	-0.25%
Max Drawdown (3Y) Largest decline over 3 years	-3.89%	-5.36%	+1.47%
Current Drawdown Current decline from peak	-0.13%	-0.29%	+0.16%
Average Drawdown Average peak-to-trough decline	-3.46%	-1.32%	-2.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.52%	0.49%	+0.03%

Volatility

AHYB vs. XB - Volatility Comparison

The current volatility for American Century Select High Yield ETF (AHYB) is 1.05%, while BondBloxx B Rated USD High Yield Corporate Bond ETF (XB) has a volatility of 1.37%. This indicates that AHYB experiences smaller price fluctuations and is considered to be less risky than XB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AHYB	XB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.05%	1.37%	-0.32%
Volatility (6M) Calculated over the trailing 6-month period	2.57%	2.97%	-0.40%
Volatility (1Y) Calculated over the trailing 1-year period	3.36%	3.74%	-0.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.14%	7.44%	-0.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.14%	7.44%	-0.30%

AHYB vs. XB - Expense Ratio Comparison

AHYB has a 0.45% expense ratio, which is higher than XB's 0.30% expense ratio.

Dividends

AHYB vs. XB - Dividend Comparison

AHYB's dividend yield for the trailing twelve months is around 6.00%, less than XB's 7.07% yield.

Position	TTM	2025	2024	2023	2022	2021
AHYB American Century Select High Yield ETF	6.00%	5.80%	5.87%	5.28%	5.06%	0.60%
XB BondBloxx B Rated USD High Yield Corporate Bond ETF	7.07%	6.96%	7.74%	7.87%	5.01%	0.00%

Frequently Asked Questions

Can I hold both AHYB and XB in my portfolio?

AHYB and XB have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AHYB or XB?

XB has higher volatility (1.37%) compared to AHYB (1.05%). In terms of maximum drawdown, AHYB dropped -14.76% vs XB's -9.25%.

Which ETF is better, AHYB or XB?

On 3-year performance, XB leads with 8.50% vs 8.04% for AHYB. On fees, XB is cheaper at 0.30% per year. On volatility, AHYB has been the lower-risk option at 1.05%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AHYB or XB?

Over the 3-year period, XB has performed better with a 8.50% return vs 8.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AHYB or XB?

XB is cheaper with a 0.30% expense ratio, compared with 0.45% for AHYB.

Which ETF pays a higher dividend yield, AHYB or XB?

XB has the higher dividend yield at 7.07%, compared with 6.00% for AHYB.

What is the main difference between AHYB and XB?

AHYB tracks ICE BofA US High Yield Constrained (BB), while XB tracks ICE BofA Single-B US Cash Pay High Yield Constrained Index. They also come from different issuers: American Century and BondBloxx. Their fees differ too: 0.45% for AHYB and 0.30% for XB.

Which has better risk-adjusted returns?

XB currently has the higher Sharpe Ratio (1.97 vs 1.95), 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.