FBIIX vs. VTABX

Last updated Jun 23, 2026

FBIIX (Fidelity International Bond Index Fund) and VTABX (Vanguard Total International Bond Index Fund Admiral Shares) are both Global Bonds funds - FBIIX tracks the Bloomberg Global Aggregate ex-USD Float Adjusted RIC Diversified Index (Hedged USD) while VTABX tracks the Bloomberg Global Aggregate ex-USD Float Adjusted RIC Capped Index Hedged. Both are passively managed. Over the past 5 years, FBIIX returned 0.83%/yr vs 0.45%/yr for VTABX. Their correlation of 0.88 suggests significant overlap in exposure. FBIIX charges 0.06%/yr vs 0.10%/yr for VTABX.

Performance

FBIIX vs. VTABX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity International Bond Index Fund (FBIIX) and Vanguard Total International Bond Index Fund Admiral Shares (VTABX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FBIIX achieves a 1.38% return, which is significantly higher than VTABX's 1.08% return.

FBIIX

• 1D: 0.22%
• 1M: 1.10%
• YTD: 1.38%
• 6M: 1.82%
• 1Y: 2.45%
• 3Y*: 4.39%
• 5Y*: 0.83%
• 10Y*: —

VTABX

• 1D: 0.00%
• 1M: 1.07%
• YTD: 1.08%
• 6M: 1.45%
• 1Y: 2.37%
• 3Y*: 4.40%
• 5Y*: 0.45%
• 10Y*: 1.83%

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

FBIIX vs. VTABX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FBIIX Fidelity International Bond Index Fund	1.38%	2.66%	4.64%	7.48%	-10.84%	-1.84%	4.43%	-1.13%
VTABX Vanguard Total International Bond Index Fund Admiral Shares	1.08%	2.96%	3.92%	8.77%	-12.92%	-2.22%	4.54%	-1.28%

Correlation

The correlation between FBIIX and VTABX is 0.86, 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	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since Oct 10, 2019	0.88

The correlation between FBIIX and VTABX has been stable across timeframes, ranging from 0.86 to 0.90 - a consistent structural relationship.

Return for Risk

FBIIX vs. VTABX — Risk / Return Rank

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

FBIIX

FBIIX Risk / Return Rank: 10
FBIIX Sharpe Ratio Rank: 11
FBIIX Sortino Ratio Rank: 10
FBIIX Omega Ratio Rank: 11
FBIIX Calmar Ratio Rank: 10
FBIIX Martin Ratio Rank: 9

VTABX

VTABX Risk / Return Rank: 9
VTABX Sharpe Ratio Rank: 10
VTABX Sortino Ratio Rank: 9
VTABX Omega Ratio Rank: 9
VTABX Calmar Ratio Rank: 9
VTABX Martin Ratio Rank: 8

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.

FBIIX vs. VTABX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity International Bond Index Fund (FBIIX) and Vanguard Total International Bond Index Fund Admiral Shares (VTABX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	FBIIX	VTABX	Difference
Sharpe ratio: Return per unit of total volatility	0.81	0.76	+0.05
Sortino ratio: Return per unit of downside risk	1.18	1.10	+0.08
Omega ratio: Gain probability vs. loss probability	1.16	1.14	+0.02
Calmar ratio: Return relative to maximum drawdown	0.88	0.80	+0.08
Martin ratio: Return relative to average drawdown	2.40	2.18	+0.21

FBIIX vs. VTABX - Sharpe Ratio Comparison

The current FBIIX Sharpe Ratio is 0.81, which is comparable to the VTABX Sharpe Ratio of 0.76. The chart below compares the historical Sharpe Ratios of FBIIX and VTABX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FBIIX vs. VTABX - Drawdown Comparison

The maximum FBIIX drawdown since its inception was -13.79%, smaller than the maximum VTABX drawdown of -16.16%. Use the drawdown chart below to compare losses from any high point for FBIIX and VTABX.

Drawdown Indicators

	FBIIX	VTABX	Difference
Max Drawdown Largest peak-to-trough decline	-13.79%	-16.16%	+2.37%
Max Drawdown (1Y) Largest decline over 1 year	-2.78%	-2.90%	+0.12%
Max Drawdown (3Y) Largest decline over 3 years	-2.78%	-2.90%	+0.12%
Max Drawdown (5Y) Largest decline over 5 years	-13.74%	-15.81%	+2.07%
Max Drawdown (10Y) Largest decline over 10 years	—	-16.16%	—
Current Drawdown Current decline from peak	-0.58%	-0.79%	+0.21%
Average Drawdown Average peak-to-trough decline	-4.10%	-3.04%	-1.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.02%	1.07%	-0.05%

Volatility

FBIIX vs. VTABX - Volatility Comparison

The current volatility for Fidelity International Bond Index Fund (FBIIX) is 0.93%, while Vanguard Total International Bond Index Fund Admiral Shares (VTABX) has a volatility of 1.01%. This indicates that FBIIX experiences smaller price fluctuations and is considered to be less risky than VTABX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FBIIX	VTABX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.93%	1.01%	-0.08%
Volatility (6M) Calculated over the trailing 6-month period	2.66%	2.62%	+0.04%
Volatility (1Y) Calculated over the trailing 1-year period	3.03%	3.07%	-0.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.59%	4.45%	-0.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.42%	3.62%	-0.20%

FBIIX vs. VTABX - Expense Ratio Comparison

FBIIX has a 0.06% expense ratio, which is lower than VTABX's 0.10% 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

FBIIX vs. VTABX - Dividend Comparison

FBIIX's dividend yield for the trailing twelve months is around 4.15%, less than VTABX's 4.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBIIX Fidelity International Bond Index Fund	4.15%	4.09%	3.44%	2.85%	1.02%	0.62%	0.74%	0.17%	0.00%	0.00%	0.00%	0.00%
VTABX Vanguard Total International Bond Index Fund Admiral Shares	4.44%	4.36%	4.33%	4.39%	1.48%	3.70%	1.08%	4.28%	3.00%	2.23%	1.80%	1.64%

Frequently Asked Questions

Can I hold both FBIIX and VTABX in my portfolio?

FBIIX and VTABX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FBIIX or VTABX?

VTABX has higher volatility (1.01%) compared to FBIIX (0.93%). In terms of maximum drawdown, FBIIX dropped -13.79% vs VTABX's -16.16%.

Which has better risk-adjusted returns?

FBIIX currently has the higher Sharpe Ratio (0.81 vs 0.76), 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.