SCYB vs. FIBUX

Last updated Apr 1, 2026

Compare and contrast key facts about Schwab High Yield Bond ETF (SCYB) and Fidelity Flex U.S. Bond Index Fund (FIBUX).

SCYB is a passively managed fund by Charles Schwab that tracks the performance of the ICE BofA US Cash Pay High Yield Constrained Index. It was launched on Jul 10, 2023. FIBUX is managed by Fidelity. It was launched on Mar 9, 2017.

Performance

SCYB vs. FIBUX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Schwab High Yield Bond ETF (SCYB) and Fidelity Flex U.S. Bond Index Fund (FIBUX). The values are adjusted to include any dividend payments, if applicable.

SCYB vs. FIBUX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
SCYB Schwab High Yield Bond ETF	-0.47%	8.33%	8.15%	6.74%
FIBUX Fidelity Flex U.S. Bond Index Fund	-0.45%	7.20%	1.31%	4.12%

Returns By Period

The year-to-date returns for both investments are quite close, with SCYB having a -0.47% return and FIBUX slightly higher at -0.45%.

SCYB

• 1D: 0.89%
• 1M: -1.23%
• YTD: -0.47%
• 6M: 0.62%
• 1Y: 6.71%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FIBUX

• 1D: 0.44%
• 1M: -2.35%
• YTD: -0.45%
• 6M: 0.51%
• 1Y: 3.75%
• 3Y*: 3.43%
• 5Y*: 0.09%
• 10Y*: —

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

SCYB vs. FIBUX - Expense Ratio Comparison

SCYB has a 0.03% expense ratio, which is higher than FIBUX's 0.00% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

SCYB

Schwab High Yield Bond ETF

FIBUX

Fidelity Flex U.S. Bond Index Fund

Return for Risk

SCYB vs. FIBUX — Risk / Return Rank

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

SCYB

SCYB Risk / Return Rank: 74
SCYB Sharpe Ratio Rank: 70
SCYB Sortino Ratio Rank: 72
SCYB Omega Ratio Rank: 77
SCYB Calmar Ratio Rank: 67
SCYB Martin Ratio Rank: 81

FIBUX

FIBUX Risk / Return Rank: 54
FIBUX Sharpe Ratio Rank: 53
FIBUX Sortino Ratio Rank: 52
FIBUX Omega Ratio Rank: 38
FIBUX Calmar Ratio Rank: 75
FIBUX Martin Ratio Rank: 50

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.

SCYB vs. FIBUX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Schwab High Yield Bond ETF (SCYB) and Fidelity Flex U.S. Bond Index Fund (FIBUX). 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.

	SCYB	FIBUX	Difference
Sharpe ratio Return per unit of total volatility	1.19	0.98	+0.21
Sortino ratio Return per unit of downside risk	1.75	1.40	+0.35
Omega ratio Gain probability vs. loss probability	1.28	1.17	+0.11
Calmar ratio Return relative to maximum drawdown	1.60	1.72	-0.12
Martin ratio Return relative to average drawdown	8.44	4.89	+3.55
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SCYB vs. FIBUX - Sharpe Ratio Comparison

The current SCYB Sharpe Ratio is 1.19, which is comparable to the FIBUX Sharpe Ratio of 0.98. The chart below compares the historical Sharpe Ratios of SCYB and FIBUX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SCYB	FIBUX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.19	0.98	+0.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.01	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.62	0.34	+1.28

Correlation

The correlation between SCYB and FIBUX is 0.55, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

SCYB vs. FIBUX - Dividend Comparison

SCYB's dividend yield for the trailing twelve months is around 7.01%, more than FIBUX's 3.70% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
SCYB Schwab High Yield Bond ETF	7.01%	6.99%	7.06%	3.36%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
FIBUX Fidelity Flex U.S. Bond Index Fund	3.70%	3.95%	3.65%	2.93%	1.62%	1.18%	2.32%	2.96%	2.70%	2.45%

Drawdowns

SCYB vs. FIBUX - Drawdown Comparison

The maximum SCYB drawdown since its inception was -4.92%, smaller than the maximum FIBUX drawdown of -19.76%. Use the drawdown chart below to compare losses from any high point for SCYB and FIBUX.

Drawdown Indicators

	SCYB	FIBUX	Difference
Max Drawdown Largest peak-to-trough decline	-4.92%	-19.76%	+14.84%
Max Drawdown (1Y) Largest decline over 1 year	-4.22%	-2.78%	-1.44%
Max Drawdown (5Y) Largest decline over 5 years	—	-18.40%	—
Current Drawdown Current decline from peak	-1.50%	-4.31%	+2.81%
Average Drawdown Average peak-to-trough decline	-0.53%	-5.83%	+5.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.80%	0.98%	-0.18%

Volatility

SCYB vs. FIBUX - Volatility Comparison

Schwab High Yield Bond ETF (SCYB) has a higher volatility of 2.25% compared to Fidelity Flex U.S. Bond Index Fund (FIBUX) at 1.64%. This indicates that SCYB's price experiences larger fluctuations and is considered to be riskier than FIBUX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SCYB	FIBUX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.25%	1.64%	+0.61%
Volatility (6M) Calculated over the trailing 6-month period	2.91%	2.64%	+0.27%
Volatility (1Y) Calculated over the trailing 1-year period	5.67%	4.45%	+1.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.20%	6.01%	-0.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.20%	5.13%	+0.07%