DIPSX vs. VBTLX
DIPSX (DFA Inflation-Protected Securities Portfolio) and VBTLX (Vanguard Total Bond Market Index Fund Admiral Shares) are both mutual funds - DIPSX is a Inflation-Protected Bonds fund managed by Dimensional, while VBTLX is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Float Adjusted Index. Over the past 10 years, DIPSX returned 2.62%/yr vs 1.58%/yr for VBTLX. A 0.78 correlation means they provide meaningful diversification when combined. DIPSX charges 0.11%/yr vs 0.04%/yr for VBTLX.
Performance
DIPSX vs. VBTLX - Performance Comparison
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Returns By Period
In the year-to-date period, DIPSX achieves a 1.80% return, which is significantly higher than VBTLX's 0.42% return. Over the past 10 years, DIPSX has outperformed VBTLX with an annualized return of 2.62%, while VBTLX has yielded a comparatively lower 1.58% annualized return.
DIPSX
- 1D
- 0.00%
- 1M
- 0.18%
- YTD
- 1.80%
- 6M
- 1.36%
- 1Y
- 4.08%
- 3Y*
- 3.75%
- 5Y*
- 0.94%
- 10Y*
- 2.62%
VBTLX
- 1D
- 0.00%
- 1M
- 0.55%
- YTD
- 0.42%
- 6M
- 0.35%
- 1Y
- 5.34%
- 3Y*
- 4.05%
- 5Y*
- 0.21%
- 10Y*
- 1.58%
DIPSX vs. VBTLX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
DIPSX DFA Inflation-Protected Securities Portfolio | 1.80% | 5.77% | 2.02% | 3.93% | -12.26% | 5.55% | 11.65% | 8.54% | -1.30% | 3.28% |
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 DIPSX and VBTLX 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 | 0.85 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.79 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.78 |
Correlation (All Time) Calculated using the full available price history since Aug 6, 2012 | 0.78 |
The correlation between DIPSX and VBTLX has been stable across timeframes, ranging from 0.76 to 0.85 - a consistent structural relationship.
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Return for Risk
DIPSX vs. VBTLX — Risk / Return Rank
DIPSX
VBTLX
DIPSX vs. VBTLX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for DFA Inflation-Protected Securities Portfolio (DIPSX) 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.
| DIPSX | VBTLX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.20 | ||
| Sortino ratioReturn per unit of downside risk | -0.34 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.24 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.98 | 1.86 | +0.13 |
| Martin ratioReturn relative to average drawdown | 5.53 | 5.58 | -0.05 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| DIPSX | VBTLX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.16 | 1.36 | -0.20 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.15 | 0.04 | +0.11 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.46 | 0.32 | +0.14 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.33 | 0.76 | -0.43 |
Drawdowns
DIPSX vs. VBTLX - Drawdown Comparison
The maximum DIPSX drawdown since its inception was -14.64%, smaller than the maximum VBTLX drawdown of -18.81%. Use the drawdown chart below to compare losses from any high point for DIPSX and VBTLX.
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Drawdown Indicators
| DIPSX | VBTLX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -14.64% | -18.81% | +4.17% |
Max Drawdown (1Y)Largest decline over 1 year | -2.03% | -2.89% | +0.86% |
Max Drawdown (3Y)Largest decline over 3 years | -4.75% | -6.00% | +1.25% |
Max Drawdown (5Y)Largest decline over 5 years | -14.64% | -18.14% | +3.50% |
Max Drawdown (10Y)Largest decline over 10 years | -14.64% | -18.81% | +4.17% |
Current DrawdownCurrent decline from peak | -0.51% | -2.18% | +1.67% |
Average DrawdownAverage peak-to-trough decline | -4.55% | -2.67% | -1.88% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.73% | 0.96% | -0.23% |
Volatility
DIPSX vs. VBTLX - Volatility Comparison
The current volatility for DFA Inflation-Protected Securities Portfolio (DIPSX) is 0.87%, while Vanguard Total Bond Market Index Fund Admiral Shares (VBTLX) has a volatility of 1.38%. This indicates that DIPSX experiences smaller price fluctuations and is considered to be less risky 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
| DIPSX | VBTLX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.87% | 1.38% | -0.51% |
Volatility (6M)Calculated over the trailing 6-month period | 2.26% | 2.80% | -0.54% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.50% | 3.97% | -0.47% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.36% | 6.01% | +0.35% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.71% | 4.98% | +0.73% |
DIPSX vs. VBTLX - Expense Ratio Comparison
DIPSX has a 0.11% expense ratio, which is higher than VBTLX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
DIPSX vs. VBTLX - Dividend Comparison
DIPSX's dividend yield for the trailing twelve months is around 2.02%, less than VBTLX's 3.98% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DIPSX DFA Inflation-Protected Securities Portfolio | 2.02% | 2.43% | 2.70% | 3.73% | 8.14% | 4.86% | 1.58% | 2.12% | 2.28% | 2.64% | 1.99% | 0.69% |
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
DIPSX and VBTLX 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.
VBTLX has higher volatility (1.38%) compared to DIPSX (0.87%). In terms of maximum drawdown, DIPSX dropped -14.64% vs VBTLX's -18.81%.
VBTLX currently has the higher Sharpe Ratio (1.36 vs 1.16), 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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