DODIX vs. VAIPX

Last updated Jun 13, 2026

DODIX (Dodge & Cox Income Fund) and VAIPX (Vanguard Inflation-Protected Securities Fund Admiral Shares) are both mutual funds - DODIX is a Intermediate Core-Plus Bond fund actively managed by Dodge & Cox, while VAIPX is a Inflation-Protected Bonds fund managed by Vanguard. Over the past 10 years, DODIX returned 2.90%/yr vs 2.56%/yr for VAIPX. A 0.74 correlation means they provide meaningful diversification when combined. DODIX charges 0.41%/yr vs 0.10%/yr for VAIPX.

Performance

DODIX vs. VAIPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dodge & Cox Income Fund (DODIX) and Vanguard Inflation-Protected Securities Fund Admiral Shares (VAIPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DODIX achieves a 0.59% return, which is significantly lower than VAIPX's 1.35% return. Over the past 10 years, DODIX has outperformed VAIPX with an annualized return of 2.90%, while VAIPX has yielded a comparatively lower 2.56% annualized return.

DODIX

• 1D: 0.55%
• 1M: 0.55%
• YTD: 0.59%
• 6M: 1.18%
• 1Y: 5.50%
• 3Y*: 5.26%
• 5Y*: 1.17%
• 10Y*: 2.90%

VAIPX

• 1D: 0.35%
• 1M: -0.17%
• YTD: 1.35%
• 6M: 1.49%
• 1Y: 4.72%
• 3Y*: 3.92%
• 5Y*: 1.01%
• 10Y*: 2.56%

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

DODIX vs. VAIPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DODIX Dodge & Cox Income Fund	0.59%	8.32%	2.25%	7.69%	-11.42%	-0.92%	9.46%	9.73%	-0.31%	4.36%
VAIPX Vanguard Inflation-Protected Securities Fund Admiral Shares	1.35%	6.87%	1.85%	3.83%	-11.92%	5.69%	10.96%	8.16%	-1.39%	2.91%

Correlation

The correlation between DODIX and VAIPX is 0.84, 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	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.81
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Jun 10, 2005	0.74

The correlation between DODIX and VAIPX shifts across timeframes, from 0.74 (all time) to 0.88 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

DODIX vs. VAIPX — Risk / Return Rank

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

DODIX

DODIX Risk / Return Rank: 38
DODIX Sharpe Ratio Rank: 41
DODIX Sortino Ratio Rank: 43
DODIX Omega Ratio Rank: 40
DODIX Calmar Ratio Rank: 37
DODIX Martin Ratio Rank: 30

VAIPX

VAIPX Risk / Return Rank: 48
VAIPX Sharpe Ratio Rank: 43
VAIPX Sortino Ratio Rank: 50
VAIPX Omega Ratio Rank: 41
VAIPX Calmar Ratio Rank: 62
VAIPX Martin Ratio Rank: 45

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.

DODIX vs. VAIPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dodge & Cox Income Fund (DODIX) and Vanguard Inflation-Protected Securities Fund Admiral Shares (VAIPX). 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.

	DODIX	VAIPX	Difference
Sharpe ratio: Return per unit of total volatility	1.46	1.52	-0.06
Sortino ratio: Return per unit of downside risk	2.17	2.33	-0.16
Omega ratio: Gain probability vs. loss probability	1.26	1.27	-0.01
Calmar ratio: Return relative to maximum drawdown	1.88	2.46	-0.59
Martin ratio: Return relative to average drawdown	5.47	7.79	-2.32

DODIX vs. VAIPX - Sharpe Ratio Comparison

The current DODIX Sharpe Ratio is 1.46, which is comparable to the VAIPX Sharpe Ratio of 1.52. The chart below compares the historical Sharpe Ratios of DODIX and VAIPX, 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

DODIX vs. VAIPX - Drawdown Comparison

The maximum DODIX drawdown since its inception was -16.89%, which is greater than VAIPX's maximum drawdown of -15.04%. Use the drawdown chart below to compare losses from any high point for DODIX and VAIPX.

Drawdown Indicators

	DODIX	VAIPX	Difference
Max Drawdown Largest peak-to-trough decline	-16.89%	-15.04%	-1.85%
Max Drawdown (1Y) Largest decline over 1 year	-3.17%	-2.05%	-1.12%
Max Drawdown (3Y) Largest decline over 3 years	-5.68%	-4.52%	-1.16%
Max Drawdown (5Y) Largest decline over 5 years	-16.89%	-14.40%	-2.49%
Max Drawdown (10Y) Largest decline over 10 years	-16.89%	-14.40%	-2.49%
Current Drawdown Current decline from peak	-1.55%	-0.39%	-1.16%
Average Drawdown Average peak-to-trough decline	-1.50%	-3.81%	+2.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.08%	0.65%	+0.43%

Volatility

DODIX vs. VAIPX - Volatility Comparison

Dodge & Cox Income Fund (DODIX) has a higher volatility of 1.40% compared to Vanguard Inflation-Protected Securities Fund Admiral Shares (VAIPX) at 1.15%. This indicates that DODIX's price experiences larger fluctuations and is considered to be riskier than VAIPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DODIX	VAIPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.40%	1.15%	+0.25%
Volatility (6M) Calculated over the trailing 6-month period	3.06%	2.36%	+0.70%
Volatility (1Y) Calculated over the trailing 1-year period	4.09%	3.34%	+0.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.56%	5.99%	-0.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.45%	5.32%	-0.87%

DODIX vs. VAIPX - Expense Ratio Comparison

DODIX has a 0.41% expense ratio, which is higher than VAIPX's 0.10% expense ratio.

Dividends

DODIX vs. VAIPX - Dividend Comparison

DODIX's dividend yield for the trailing twelve months is around 4.25%, less than VAIPX's 4.50% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DODIX Dodge & Cox Income Fund	4.25%	4.23%	4.24%	3.86%	2.19%	3.23%	4.66%	3.63%	3.43%	3.03%	3.25%	3.09%
VAIPX Vanguard Inflation-Protected Securities Fund Admiral Shares	4.50%	4.74%	4.17%	4.31%	8.45%	5.13%	1.38%	2.29%	3.12%	2.41%	3.49%	0.88%

Frequently Asked Questions

Can I hold both DODIX and VAIPX in my portfolio?

DODIX and VAIPX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DODIX or VAIPX?

DODIX has higher volatility (1.40%) compared to VAIPX (1.15%). In terms of maximum drawdown, DODIX dropped -16.89% vs VAIPX's -15.04%.

Which has better risk-adjusted returns?

VAIPX currently has the higher Sharpe Ratio (1.52 vs 1.46), 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.