AGBVX vs. VTABX
AGBVX (American Century Global Bond Fund) and VTABX (Vanguard Total International Bond Index Fund Admiral Shares) are both Global Bonds funds. Over the past 10 years, AGBVX returned 1.53%/yr vs 1.83%/yr for VTABX. Their correlation of 0.82 suggests significant overlap in exposure. AGBVX charges 0.80%/yr vs 0.10%/yr for VTABX.
Performance
AGBVX vs. VTABX - Performance Comparison
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Returns By Period
In the year-to-date period, AGBVX achieves a 1.24% return, which is significantly higher than VTABX's 1.08% return. Over the past 10 years, AGBVX has underperformed VTABX with an annualized return of 1.53%, while VTABX has yielded a comparatively higher 1.83% annualized return.
AGBVX
- 1D
- 0.12%
- 1M
- 0.99%
- YTD
- 1.24%
- 6M
- 1.48%
- 1Y
- 4.00%
- 3Y*
- 4.11%
- 5Y*
- 0.17%
- 10Y*
- 1.53%
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%
AGBVX vs. VTABX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AGBVX American Century Global Bond Fund | 1.24% | 4.86% | 2.26% | 6.58% | -12.84% | -1.24% | 4.58% | 8.41% | -0.33% | 3.74% |
VTABX Vanguard Total International Bond Index Fund Admiral Shares | 1.08% | 2.96% | 3.92% | 8.77% | -12.92% | -2.22% | 4.54% | 8.83% | 2.97% | 2.39% |
Correlation
The correlation between AGBVX and VTABX is 0.83, 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 | 0.83 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.88 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.88 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.83 |
Correlation (All Time) Calculated using the full available price history since Jun 4, 2013 | 0.82 |
The correlation between AGBVX and VTABX has been stable across timeframes, ranging from 0.82 to 0.88 - a consistent structural relationship.
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Return for Risk
AGBVX vs. VTABX — Risk / Return Rank
AGBVX
VTABX
AGBVX vs. VTABX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Global Bond Fund (AGBVX) 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.
| AGBVX | VTABX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.61 | ||
| Sortino ratioReturn per unit of downside risk | +0.89 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.14 | +0.12 |
| Calmar ratioReturn relative to maximum drawdown | 1.48 | 0.80 | +0.68 |
| Martin ratioReturn relative to average drawdown | 5.00 | 2.18 | +2.81 |
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Drawdowns
AGBVX vs. VTABX - Drawdown Comparison
The maximum AGBVX drawdown since its inception was -16.32%, roughly equal to the maximum VTABX drawdown of -16.16%. Use the drawdown chart below to compare losses from any high point for AGBVX and VTABX.
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Drawdown Indicators
| AGBVX | VTABX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -16.32% | -16.16% | -0.16% |
Max Drawdown (1Y)Largest decline over 1 year | -2.71% | -2.90% | +0.19% |
Max Drawdown (3Y)Largest decline over 3 years | -4.78% | -2.90% | -1.88% |
Max Drawdown (5Y)Largest decline over 5 years | -16.32% | -15.81% | -0.51% |
Max Drawdown (10Y)Largest decline over 10 years | -16.32% | -16.16% | -0.16% |
Current DrawdownCurrent decline from peak | -0.59% | -0.79% | +0.20% |
Average DrawdownAverage peak-to-trough decline | -3.32% | -3.04% | -0.28% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.80% | 1.07% | -0.27% |
Volatility
AGBVX vs. VTABX - Volatility Comparison
The current volatility for American Century Global Bond Fund (AGBVX) is 0.93%, while Vanguard Total International Bond Index Fund Admiral Shares (VTABX) has a volatility of 1.01%. This indicates that AGBVX 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.
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Volatility by Period
| AGBVX | 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 | 2.39% | 2.62% | -0.23% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.94% | 3.07% | -0.13% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.41% | 4.45% | -0.04% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.72% | 3.62% | +0.10% |
AGBVX vs. VTABX - Expense Ratio Comparison
AGBVX has a 0.80% expense ratio, which is higher than VTABX's 0.10% expense ratio.
Dividends
AGBVX vs. VTABX - Dividend Comparison
AGBVX's dividend yield for the trailing twelve months is around 5.24%, more than VTABX's 4.44% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AGBVX American Century Global Bond Fund | 5.24% | 4.68% | 2.71% | 1.88% | 7.39% | 2.15% | 0.90% | 1.72% | 6.01% | 1.91% | 1.43% | 0.44% |
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
AGBVX and VTABX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VTABX has higher volatility (1.01%) compared to AGBVX (0.93%). In terms of maximum drawdown, AGBVX dropped -16.32% vs VTABX's -16.16%.
AGBVX currently has the higher Sharpe Ratio (1.37 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.
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