WFBIX vs. AVIGX

Last updated Jun 5, 2026

WFBIX (iShares U.S. Aggregate Bond Index Fund) and AVIGX (Avantis Core Fixed Income Fund) are both Intermediate Core Bond funds. Over the past 5 years, WFBIX returned 0.87%/yr vs 0.05%/yr for AVIGX. With a 0.96 correlation, they move nearly in lockstep. WFBIX charges 0.05%/yr vs 0.15%/yr for AVIGX.

Performance

WFBIX vs. AVIGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares U.S. Aggregate Bond Index Fund (WFBIX) and Avantis Core Fixed Income Fund (AVIGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WFBIX achieves a 0.21% return, which is significantly higher than AVIGX's 0.02% return.

WFBIX

• 1D: -0.22%
• 1M: 0.11%
• YTD: 0.21%
• 6M: 0.32%
• 1Y: 4.53%
• 3Y*: 5.26%
• 5Y*: 0.87%
• 10Y*: 1.94%

AVIGX

• 1D: -0.24%
• 1M: 0.00%
• YTD: 0.02%
• 6M: 0.27%
• 1Y: 4.74%
• 3Y*: 4.34%
• 5Y*: 0.05%
• 10Y*: —

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

WFBIX vs. AVIGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
WFBIX iShares U.S. Aggregate Bond Index Fund	0.21%	7.16%	1.43%	9.65%	-13.03%	1.33%
AVIGX Avantis Core Fixed Income Fund	0.02%	8.04%	2.07%	5.13%	-13.62%	0.99%

Correlation

The correlation between WFBIX and AVIGX is 0.95 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (All Time) Calculated using the full available price history since Mar 10, 2021	0.96

The correlation between WFBIX and AVIGX has been stable across timeframes, ranging from 0.95 to 0.96 - a consistent structural relationship.

Return for Risk

WFBIX vs. AVIGX — Risk / Return Rank

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

WFBIX

WFBIX Risk / Return Rank: 20
WFBIX Sharpe Ratio Rank: 20
WFBIX Sortino Ratio Rank: 22
WFBIX Omega Ratio Rank: 20
WFBIX Calmar Ratio Rank: 22
WFBIX Martin Ratio Rank: 19

AVIGX

AVIGX Risk / Return Rank: 22
AVIGX Sharpe Ratio Rank: 21
AVIGX Sortino Ratio Rank: 22
AVIGX Omega Ratio Rank: 21
AVIGX Calmar Ratio Rank: 25
AVIGX Martin Ratio Rank: 22

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.

WFBIX vs. AVIGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Aggregate Bond Index Fund (WFBIX) and Avantis Core Fixed Income Fund (AVIGX). 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.

	WFBIX	AVIGX	Difference
Sharpe ratio: Return per unit of total volatility	1.30	1.29	+0.01
Sortino ratio: Return per unit of downside risk	1.95	1.92	+0.03
Omega ratio: Gain probability vs. loss probability	1.23	1.23	0.00
Calmar ratio: Return relative to maximum drawdown	1.70	1.77	-0.07
Martin ratio: Return relative to average drawdown	5.08	5.42	-0.34
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WFBIX vs. AVIGX - Sharpe Ratio Comparison

The current WFBIX Sharpe Ratio is 1.30, which is comparable to the AVIGX Sharpe Ratio of 1.29. The chart below compares the historical Sharpe Ratios of WFBIX and AVIGX, 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

	WFBIX	AVIGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.30	1.29	+0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.14	0.01	+0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.38	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.94	0.04	+0.91

Drawdowns

WFBIX vs. AVIGX - Drawdown Comparison

The maximum WFBIX drawdown since its inception was -18.68%, roughly equal to the maximum AVIGX drawdown of -19.39%. Use the drawdown chart below to compare losses from any high point for WFBIX and AVIGX.

Drawdown Indicators

	WFBIX	AVIGX	Difference
Max Drawdown Largest peak-to-trough decline	-18.68%	-19.39%	+0.71%
Max Drawdown (1Y) Largest decline over 1 year	-3.02%	-3.04%	+0.02%
Max Drawdown (3Y) Largest decline over 3 years	-6.09%	-6.28%	+0.19%
Max Drawdown (5Y) Largest decline over 5 years	-17.84%	-19.39%	+1.55%
Max Drawdown (10Y) Largest decline over 10 years	-18.68%	—	—
Current Drawdown Current decline from peak	-1.71%	-1.85%	+0.14%
Average Drawdown Average peak-to-trough decline	-2.26%	-8.33%	+6.07%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	0.99%	+0.02%

Volatility

WFBIX vs. AVIGX - Volatility Comparison

The current volatility for iShares U.S. Aggregate Bond Index Fund (WFBIX) is 1.31%, while Avantis Core Fixed Income Fund (AVIGX) has a volatility of 1.48%. This indicates that WFBIX experiences smaller price fluctuations and is considered to be less risky than AVIGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WFBIX	AVIGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.31%	1.48%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	2.80%	3.07%	-0.27%
Volatility (1Y) Calculated over the trailing 1-year period	3.97%	4.20%	-0.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.40%	6.19%	+0.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.17%	6.09%	-0.92%

WFBIX vs. AVIGX - Expense Ratio Comparison

WFBIX has a 0.05% expense ratio, which is lower than AVIGX's 0.15% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

WFBIX vs. AVIGX - Dividend Comparison

WFBIX's dividend yield for the trailing twelve months is around 3.91%, less than AVIGX's 4.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AVIGX Avantis Core Fixed Income Fund	4.43%	4.45%	4.97%	2.92%	3.01%	0.79%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
WFBIX iShares U.S. Aggregate Bond Index Fund	3.91%	3.78%	3.68%	6.82%	2.60%	2.04%	2.43%	2.88%	2.71%	2.24%	2.25%	2.20%

Frequently Asked Questions

Can I hold both WFBIX and AVIGX in my portfolio?

With a correlation of 0.95, WFBIX and AVIGX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, WFBIX or AVIGX?

AVIGX has higher volatility (1.48%) compared to WFBIX (1.31%). In terms of maximum drawdown, WFBIX dropped -18.68% vs AVIGX's -19.39%.

Which has better risk-adjusted returns?

WFBIX currently has the higher Sharpe Ratio (1.30 vs 1.28), 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.