FIWGX vs. IUSB

Last updated Jun 4, 2026

FIWGX (Strategic Advisers Fidelity Core Income Fund) and IUSB (iShares Core Universal USD Bond ETF) are both Intermediate Core-Plus Bond funds. Over the past 5 years, FIWGX returned 0.42%/yr vs 0.44%/yr for IUSB. Their correlation of 0.89 suggests significant overlap in exposure. FIWGX charges 0.46%/yr vs 0.06%/yr for IUSB.

Performance

FIWGX vs. IUSB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Strategic Advisers Fidelity Core Income Fund (FIWGX) and iShares Core Universal USD Bond ETF (IUSB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FIWGX achieves a 0.17% return, which is significantly lower than IUSB's 0.43% return.

FIWGX

• 1D: 0.00%
• 1M: 0.45%
• YTD: 0.17%
• 6M: 0.06%
• 1Y: 4.97%
• 3Y*: 4.35%
• 5Y*: 0.42%
• 10Y*: —

IUSB

• 1D: -0.17%
• 1M: 0.31%
• YTD: 0.43%
• 6M: 0.31%
• 1Y: 5.54%
• 3Y*: 4.51%
• 5Y*: 0.44%
• 10Y*: 1.94%

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

FIWGX vs. IUSB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FIWGX Strategic Advisers Fidelity Core Income Fund	0.17%	6.90%	2.14%	6.51%	-13.71%	-0.37%	10.21%	9.39%	1.28%
IUSB iShares Core Universal USD Bond ETF	0.43%	7.38%	2.11%	6.23%	-13.04%	-1.33%	7.62%	9.13%	1.99%

Correlation

The correlation between FIWGX and IUSB 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	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (All Time) Calculated using the full available price history since Oct 25, 2018	0.89

The correlation between FIWGX and IUSB shifts across timeframes, from 0.76 (1 year) to 0.91 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

FIWGX vs. IUSB — Risk / Return Rank

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

FIWGX

FIWGX Risk / Return Rank: 30
FIWGX Sharpe Ratio Rank: 26
FIWGX Sortino Ratio Rank: 28
FIWGX Omega Ratio Rank: 24
FIWGX Calmar Ratio Rank: 40
FIWGX Martin Ratio Rank: 30

IUSB

IUSB Risk / Return Rank: 43
IUSB Sharpe Ratio Rank: 43
IUSB Sortino Ratio Rank: 45
IUSB Omega Ratio Rank: 41
IUSB Calmar Ratio Rank: 43
IUSB Martin Ratio Rank: 41

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.

FIWGX vs. IUSB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Strategic Advisers Fidelity Core Income Fund (FIWGX) and iShares Core Universal USD Bond ETF (IUSB). 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.

	FIWGX	IUSB	Difference
Sharpe ratio Return per unit of total volatility	1.46	1.54	-0.08
Sortino ratio Return per unit of downside risk	2.20	2.30	-0.10
Omega ratio Gain probability vs. loss probability	1.26	1.27	-0.02
Calmar ratio Return relative to maximum drawdown	2.40	2.20	+0.20
Martin ratio Return relative to average drawdown	7.11	6.68	+0.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FIWGX vs. IUSB - Sharpe Ratio Comparison

The current FIWGX Sharpe Ratio is 1.46, which is comparable to the IUSB Sharpe Ratio of 1.54. The chart below compares the historical Sharpe Ratios of FIWGX and IUSB, 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

	FIWGX	IUSB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.46	1.54	-0.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.07	0.08	0.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.39	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.50	0.46	+0.04

Drawdowns

FIWGX vs. IUSB - Drawdown Comparison

The maximum FIWGX drawdown since its inception was -18.42%, roughly equal to the maximum IUSB drawdown of -17.90%. Use the drawdown chart below to compare losses from any high point for FIWGX and IUSB.

Drawdown Indicators

	FIWGX	IUSB	Difference
Max Drawdown Largest peak-to-trough decline	-18.42%	-17.90%	-0.52%
Max Drawdown (1Y) Largest decline over 1 year	-2.52%	-2.53%	+0.01%
Max Drawdown (3Y) Largest decline over 3 years	-6.24%	-5.82%	-0.42%
Max Drawdown (5Y) Largest decline over 5 years	-18.42%	-17.87%	-0.55%
Max Drawdown (10Y) Largest decline over 10 years	—	-17.90%	—
Current Drawdown Current decline from peak	-1.00%	-1.33%	+0.33%
Average Drawdown Average peak-to-trough decline	-5.03%	-3.59%	-1.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.12%	0.83%	+0.29%

Volatility

FIWGX vs. IUSB - Volatility Comparison

Strategic Advisers Fidelity Core Income Fund (FIWGX) has a higher volatility of 1.49% compared to iShares Core Universal USD Bond ETF (IUSB) at 1.24%. This indicates that FIWGX's price experiences larger fluctuations and is considered to be riskier than IUSB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FIWGX	IUSB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.49%	1.24%	+0.25%
Volatility (6M) Calculated over the trailing 6-month period	2.85%	2.62%	+0.23%
Volatility (1Y) Calculated over the trailing 1-year period	4.13%	3.62%	+0.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.10%	5.79%	+0.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.51%	5.04%	+0.47%

FIWGX vs. IUSB - Expense Ratio Comparison

FIWGX has a 0.46% expense ratio, which is higher than IUSB's 0.06% expense ratio.

Dividends

FIWGX vs. IUSB - Dividend Comparison

FIWGX's dividend yield for the trailing twelve months is around 3.43%, less than IUSB's 4.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIWGX Strategic Advisers Fidelity Core Income Fund	3.43%	3.68%	4.36%	3.79%	2.24%	1.77%	6.83%	4.30%	0.57%	0.00%	0.00%	0.00%
IUSB iShares Core Universal USD Bond ETF	4.23%	4.17%	4.04%	3.46%	2.53%	1.74%	2.68%	3.04%	2.98%	2.56%	2.60%	1.95%

Frequently Asked Questions

Can I hold both FIWGX and IUSB in my portfolio?

FIWGX and IUSB 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.

Which is riskier, FIWGX or IUSB?

FIWGX has higher volatility (1.49%) compared to IUSB (1.24%). In terms of maximum drawdown, FIWGX dropped -18.42% vs IUSB's -17.90%.

Which has better risk-adjusted returns?

IUSB currently has the higher Sharpe Ratio (1.54 vs 1.46), 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.