IIBAX vs. VBTLX
IIBAX (Voya Intermediate Bond Fund) and VBTLX (Vanguard Total Bond Market Index Fund Admiral Shares) are both mutual funds - IIBAX is a Intermediate Core-Plus Bond fund managed by Voya, while VBTLX is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Float Adjusted Index. Over the past 10 years, IIBAX returned 1.80%/yr vs 1.57%/yr for VBTLX. Their correlation of 0.91 suggests significant overlap in exposure. IIBAX charges 0.69%/yr vs 0.04%/yr for VBTLX.
Performance
IIBAX vs. VBTLX - Performance Comparison
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Returns By Period
The year-to-date returns for both investments are quite close, with IIBAX having a 0.41% return and VBTLX slightly higher at 0.42%. Over the past 10 years, IIBAX has outperformed VBTLX with an annualized return of 1.80%, while VBTLX has yielded a comparatively lower 1.57% annualized return.
IIBAX
- 1D
- 0.23%
- 1M
- 0.94%
- YTD
- 0.41%
- 6M
- 0.78%
- 1Y
- 3.98%
- 3Y*
- 4.49%
- 5Y*
- -0.10%
- 10Y*
- 1.80%
VBTLX
- 1D
- 0.31%
- 1M
- 0.97%
- YTD
- 0.42%
- 6M
- 0.76%
- 1Y
- 4.68%
- 3Y*
- 4.08%
- 5Y*
- 0.02%
- 10Y*
- 1.57%
IIBAX vs. VBTLX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IIBAX Voya Intermediate Bond Fund | 0.41% | 6.42% | 2.65% | 7.04% | -15.11% | -1.79% | 7.75% | 9.57% | -0.59% | 4.48% |
VBTLX Vanguard Total Bond Market Index Fund Admiral Shares | 0.42% | 7.17% | 1.26% | 5.74% | -13.16% | -1.81% | 7.72% | 8.73% | -0.25% | 3.56% |
Correlation
The correlation between IIBAX and VBTLX is 0.88, 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 | 0.88 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.93 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.95 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.94 |
Correlation (All Time) Calculated using the full available price history since Nov 12, 2001 | 0.91 |
The correlation between IIBAX and VBTLX has been stable across timeframes, ranging from 0.88 to 0.95 - a consistent structural relationship.
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Return for Risk
IIBAX vs. VBTLX — Risk / Return Rank
IIBAX
VBTLX
IIBAX vs. VBTLX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Voya Intermediate Bond Fund (IIBAX) and Vanguard Total Bond Market Index Fund Admiral Shares (VBTLX). 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.
| IIBAX | VBTLX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.17 | ||
| Sortino ratioReturn per unit of downside risk | -0.27 | ||
| Omega ratioGain probability vs. loss probability | 1.19 | 1.21 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.44 | 1.63 | -0.19 |
| Martin ratioReturn relative to average drawdown | 4.04 | 4.63 | -0.58 |
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Drawdowns
IIBAX vs. VBTLX - Drawdown Comparison
The maximum IIBAX drawdown since its inception was -20.34%, which is greater than VBTLX's maximum drawdown of -18.81%. Use the drawdown chart below to compare losses from any high point for IIBAX and VBTLX.
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Drawdown Indicators
| IIBAX | VBTLX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -20.34% | -18.81% | -1.53% |
Max Drawdown (1Y)Largest decline over 1 year | -3.10% | -2.89% | -0.21% |
Max Drawdown (3Y)Largest decline over 3 years | -6.12% | -6.00% | -0.12% |
Max Drawdown (5Y)Largest decline over 5 years | -20.01% | -18.14% | -1.87% |
Max Drawdown (10Y)Largest decline over 10 years | -20.34% | -18.81% | -1.53% |
Current DrawdownCurrent decline from peak | -2.11% | -2.18% | +0.07% |
Average DrawdownAverage peak-to-trough decline | -2.88% | -2.67% | -0.21% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.06% | 1.01% | +0.05% |
Volatility
IIBAX vs. VBTLX - Volatility Comparison
Voya Intermediate Bond Fund (IIBAX) has a higher volatility of 1.35% compared to Vanguard Total Bond Market Index Fund Admiral Shares (VBTLX) at 1.21%. This indicates that IIBAX's price experiences larger fluctuations and is considered to be riskier than VBTLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IIBAX | VBTLX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.35% | 1.21% | +0.14% |
Volatility (6M)Calculated over the trailing 6-month period | 3.20% | 2.86% | +0.34% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.31% | 3.90% | +0.41% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.00% | 6.01% | -0.01% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.04% | 4.99% | +0.05% |
IIBAX vs. VBTLX - Expense Ratio Comparison
IIBAX has a 0.69% expense ratio, which is higher than VBTLX's 0.04% expense ratio.
Dividends
IIBAX vs. VBTLX - Dividend Comparison
IIBAX's dividend yield for the trailing twelve months is around 3.59%, less than VBTLX's 3.98% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IIBAX Voya Intermediate Bond Fund | 3.59% | 3.43% | 4.50% | 4.05% | 1.98% | 2.03% | 4.69% | 3.23% | 2.93% | 2.88% | 2.96% | 2.45% |
VBTLX Vanguard Total Bond Market Index Fund Admiral Shares | 3.98% | 3.87% | 3.69% | 3.10% | 2.59% | 1.96% | 2.39% | 2.74% | 2.57% | 2.56% | 2.53% | 2.82% |
Frequently Asked Questions
IIBAX and VBTLX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IIBAX has higher volatility (1.35%) compared to VBTLX (1.21%). In terms of maximum drawdown, IIBAX dropped -20.34% vs VBTLX's -18.81%.
VBTLX currently has the higher Sharpe Ratio (1.21 vs 1.03), 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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