DOXIX vs. FIFZX
DOXIX (Dodge & Cox Income Fund Class X) and FIFZX (Fidelity Series Bond Index Fund) are both mutual funds - DOXIX is a Intermediate Core-Plus Bond fund actively managed by Dodge & Cox, while FIFZX is a Total Bond Market fund managed by Fidelity. Over the past 3 years, DOXIX returned 5.04%/yr vs 4.32%/yr for FIFZX. With a 0.95 correlation, they move nearly in lockstep. DOXIX charges 0.33%/yr vs 0.00%/yr for FIFZX.
Performance
DOXIX vs. FIFZX - Performance Comparison
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Returns By Period
In the year-to-date period, DOXIX achieves a -0.78% return, which is significantly lower than FIFZX's 0.12% return.
DOXIX
- 1D
- 0.08%
- 1M
- -0.23%
- 6M
- -1.16%
- YTD
- -0.78%
- 1Y
- 3.79%
- 3Y*
- 5.04%
- 5Y*
- —
- 10Y*
- —
FIFZX
- 1D
- 0.11%
- 1M
- -0.22%
- 6M
- -0.09%
- YTD
- 0.12%
- 1Y
- 4.07%
- 3Y*
- 4.32%
- 5Y*
- -0.21%
- 10Y*
- —
DOXIX vs. FIFZX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
DOXIX Dodge & Cox Income Fund Class X | -0.78% | 8.39% | 2.33% | 7.75% | -2.35% |
FIFZX Fidelity Series Bond Index Fund | 0.12% | 7.15% | 1.41% | 5.54% | -3.94% |
Correlation
The correlation between DOXIX and FIFZX is 0.90, 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 | 0.90 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since May 3, 2022 | 0.95 |
The correlation between DOXIX and FIFZX has been stable across timeframes, ranging from 0.90 to 0.95 - a consistent structural relationship.
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Return for Risk
DOXIX vs. FIFZX — Risk / Return Rank
DOXIX
FIFZX
DOXIX vs. FIFZX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Dodge & Cox Income Fund Class X (DOXIX) and Fidelity Series Bond Index Fund (FIFZX). 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.
| DOXIX | FIFZX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.13 | ||
| Sortino ratioReturn per unit of downside risk | -0.23 | ||
| Omega ratioGain probability vs. loss probability | 1.15 | 1.17 | -0.02 |
| Calmar ratioReturn relative to maximum drawdown | 0.81 | 1.28 | -0.47 |
| Martin ratioReturn relative to average drawdown | 2.07 | 3.55 | -1.47 |
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Drawdowns
DOXIX vs. FIFZX - Drawdown Comparison
The maximum DOXIX drawdown since its inception was -8.83%, smaller than the maximum FIFZX drawdown of -19.27%. Use the drawdown chart below to compare losses from any high point for DOXIX and FIFZX.
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Drawdown Indicators
| DOXIX | FIFZX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -8.83% | -19.27% | +10.44% |
Max Drawdown (1Y)Largest decline over 1 year | -4.19% | -2.91% | -1.28% |
Max Drawdown (3Y)Largest decline over 3 years | -5.66% | -6.12% | +0.46% |
Max Drawdown (5Y)Largest decline over 5 years | — | -18.47% | — |
Current DrawdownCurrent decline from peak | -2.89% | -3.07% | +0.18% |
Average DrawdownAverage peak-to-trough decline | -1.93% | -6.65% | +4.72% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.63% | 1.05% | +0.58% |
Volatility
DOXIX vs. FIFZX - Volatility Comparison
Dodge & Cox Income Fund Class X (DOXIX) has a higher volatility of 1.33% compared to Fidelity Series Bond Index Fund (FIFZX) at 1.13%. This indicates that DOXIX's price experiences larger fluctuations and is considered to be riskier than FIFZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| DOXIX | FIFZX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.33% | 1.13% | +0.20% |
Volatility (6M)Calculated over the trailing 6-month period | 3.16% | 2.96% | +0.20% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.07% | 3.89% | +0.18% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.83% | 6.08% | -0.25% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.83% | 5.61% | +0.22% |
DOXIX vs. FIFZX - Expense Ratio Comparison
DOXIX has a 0.33% expense ratio, which is higher than FIFZX's 0.00% expense ratio.
Dividends
DOXIX vs. FIFZX - Dividend Comparison
DOXIX's dividend yield for the trailing twelve months is around 3.31%, less than FIFZX's 4.04% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
DOXIX Dodge & Cox Income Fund Class X | 3.31% | 4.30% | 4.32% | 3.92% | 2.30% | 0.00% | 0.00% | 0.00% |
FIFZX Fidelity Series Bond Index Fund | 4.04% | 3.87% | 3.66% | 3.09% | 1.74% | 1.42% | 3.20% | 1.64% |
Frequently Asked Questions
DOXIX and FIFZX have a correlation of 0.90, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
DOXIX has higher volatility (1.33%) compared to FIFZX (1.13%). In terms of maximum drawdown, DOXIX dropped -8.83% vs FIFZX's -19.27%.
FIFZX currently has the higher Sharpe Ratio (0.96 vs 0.84), 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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