PONAX vs. WFBIX
PONAX (PIMCO Income Fund Class A) and WFBIX (iShares U.S. Aggregate Bond Index Fund) are both mutual funds - PONAX is a Multisector Bonds fund managed by PIMCO, while WFBIX is a Intermediate Core Bond fund managed by BlackRock. Over the past 10 years, PONAX returned 4.30%/yr vs 1.96%/yr for WFBIX. A 0.58 correlation means they provide meaningful diversification when combined. PONAX charges 1.02%/yr vs 0.05%/yr for WFBIX.
Performance
PONAX vs. WFBIX - Performance Comparison
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Returns By Period
In the year-to-date period, PONAX achieves a 0.83% return, which is significantly higher than WFBIX's 0.43% return. Over the past 10 years, PONAX has outperformed WFBIX with an annualized return of 4.30%, while WFBIX has yielded a comparatively lower 1.96% annualized return.
PONAX
- 1D
- 0.18%
- 1M
- 0.88%
- YTD
- 0.83%
- 6M
- 1.21%
- 1Y
- 7.96%
- 3Y*
- 7.44%
- 5Y*
- 3.14%
- 10Y*
- 4.30%
WFBIX
- 1D
- 0.00%
- 1M
- 0.45%
- YTD
- 0.43%
- 6M
- 0.32%
- 1Y
- 5.35%
- 3Y*
- 5.33%
- 5Y*
- 0.99%
- 10Y*
- 1.96%
PONAX vs. WFBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PONAX PIMCO Income Fund Class A | 0.83% | 10.63% | 5.02% | 8.96% | -9.34% | 2.21% | 5.40% | 7.65% | 0.21% | 8.19% |
WFBIX iShares U.S. Aggregate Bond Index Fund | 0.43% | 7.16% | 1.43% | 9.65% | -13.03% | -1.79% | 7.40% | 8.72% | -0.08% | 3.39% |
Correlation
The correlation between PONAX and WFBIX is 0.89, 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 | 0.89 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.88 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.79 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.62 |
Correlation (All Time) Calculated using the full available price history since Apr 3, 2007 | 0.58 |
Over the past year, PONAX and WFBIX have become more correlated (0.89) than their long-term average of 0.58, meaning their price movements have been converging.
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Return for Risk
PONAX vs. WFBIX — Risk / Return Rank
PONAX
WFBIX
PONAX vs. WFBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for PIMCO Income Fund Class A (PONAX) and iShares U.S. Aggregate Bond Index Fund (WFBIX). 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.
| PONAX | WFBIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.60 | ||
| Sortino ratioReturn per unit of downside risk | +0.88 | ||
| Omega ratioGain probability vs. loss probability | 1.38 | 1.25 | +0.13 |
| Calmar ratioReturn relative to maximum drawdown | 2.17 | 1.78 | +0.39 |
| Martin ratioReturn relative to average drawdown | 7.45 | 5.34 | +2.11 |
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
| PONAX | WFBIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.96 | 1.36 | +0.60 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.66 | 0.16 | +0.50 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 1.03 | 0.38 | +0.64 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.48 | 0.94 | +0.54 |
Drawdowns
PONAX vs. WFBIX - Drawdown Comparison
The maximum PONAX drawdown since its inception was -13.64%, smaller than the maximum WFBIX drawdown of -18.68%. Use the drawdown chart below to compare losses from any high point for PONAX and WFBIX.
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Drawdown Indicators
| PONAX | WFBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -13.64% | -18.68% | +5.04% |
Max Drawdown (1Y)Largest decline over 1 year | -3.69% | -3.02% | -0.67% |
Max Drawdown (3Y)Largest decline over 3 years | -3.90% | -6.09% | +2.19% |
Max Drawdown (5Y)Largest decline over 5 years | -13.64% | -17.84% | +4.20% |
Max Drawdown (10Y)Largest decline over 10 years | -13.64% | -18.68% | +5.04% |
Current DrawdownCurrent decline from peak | -1.03% | -1.50% | +0.47% |
Average DrawdownAverage peak-to-trough decline | -1.80% | -2.26% | +0.46% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.07% | 1.00% | +0.07% |
Volatility
PONAX vs. WFBIX - Volatility Comparison
PIMCO Income Fund Class A (PONAX) has a higher volatility of 1.67% compared to iShares U.S. Aggregate Bond Index Fund (WFBIX) at 1.34%. This indicates that PONAX's price experiences larger fluctuations and is considered to be riskier than WFBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PONAX | WFBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.67% | 1.34% | +0.33% |
Volatility (6M)Calculated over the trailing 6-month period | 3.25% | 2.83% | +0.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.10% | 3.97% | +0.13% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.81% | 6.40% | -1.59% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.21% | 5.17% | -0.96% |
PONAX vs. WFBIX - Expense Ratio Comparison
PONAX has a 1.02% expense ratio, which is higher than WFBIX's 0.05% expense ratio.
Dividends
PONAX vs. WFBIX - Dividend Comparison
PONAX's dividend yield for the trailing twelve months is around 5.43%, more than WFBIX's 3.91% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PONAX PIMCO Income Fund Class A | 5.43% | 5.61% | 5.86% | 5.86% | 4.66% | 3.62% | 4.48% | 5.42% | 5.24% | 4.97% | 5.13% | 7.45% |
WFBIX iShares U.S. Aggregate Bond Index Fund | 3.91% | 3.78% | 3.68% | 6.82% | 2.60% | 2.04% | 2.43% | 2.88% | 2.71% | 2.24% | 2.25% | 2.20% |
Frequently Asked Questions
PONAX and WFBIX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PONAX has higher volatility (1.67%) compared to WFBIX (1.34%). In terms of maximum drawdown, PONAX dropped -13.64% vs WFBIX's -18.68%.
PONAX currently has the higher Sharpe Ratio (1.96 vs 1.36), 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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