PIODX vs. VOO
Compare and contrast key facts about Pioneer Fund (PIODX) and Vanguard S&P 500 ETF (VOO).
PIODX is managed by Amundi. It was launched on Feb 10, 1928. VOO is a passively managed fund by Vanguard that tracks the performance of the S&P 500 Index. It was launched on Sep 7, 2010.
Performance
PIODX vs. VOO - Performance Comparison
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PIODX vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PIODX Pioneer Fund | -1.25% | 23.30% | 22.62% | 28.45% | -19.43% | 27.40% | 24.01% | 31.04% | -1.48% | 21.79% |
VOO Vanguard S&P 500 ETF | -3.66% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Returns By Period
In the year-to-date period, PIODX achieves a -1.25% return, which is significantly higher than VOO's -3.66% return. Over the past 10 years, PIODX has outperformed VOO with an annualized return of 15.23%, while VOO has yielded a comparatively lower 14.14% annualized return.
PIODX
- 1D
- 3.04%
- 1M
- -6.34%
- YTD
- -1.25%
- 6M
- 2.85%
- 1Y
- 30.24%
- 3Y*
- 22.27%
- 5Y*
- 12.78%
- 10Y*
- 15.23%
VOO
- 1D
- 0.79%
- 1M
- -4.29%
- YTD
- -3.66%
- 6M
- -1.41%
- 1Y
- 18.17%
- 3Y*
- 18.58%
- 5Y*
- 11.93%
- 10Y*
- 14.14%
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PIODX vs. VOO - Expense Ratio Comparison
PIODX has a 1.06% expense ratio, which is higher than VOO's 0.03% expense ratio.
Return for Risk
PIODX vs. VOO — Risk / Return Rank
PIODX
VOO
PIODX vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Pioneer Fund (PIODX) and Vanguard S&P 500 ETF (VOO). 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.
| PIODX | VOO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.44 | 1.01 | +0.43 |
Sortino ratioReturn per unit of downside risk | 2.08 | 1.53 | +0.54 |
Omega ratioGain probability vs. loss probability | 1.30 | 1.23 | +0.07 |
Calmar ratioReturn relative to maximum drawdown | 2.44 | 1.55 | +0.89 |
Martin ratioReturn relative to average drawdown | 10.94 | 7.31 | +3.64 |
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
| PIODX | VOO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.44 | 1.01 | +0.43 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.67 | 0.71 | -0.04 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.81 | 0.79 | +0.02 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.52 | 0.83 | -0.32 |
Correlation
The correlation between PIODX and VOO is 0.97, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
PIODX vs. VOO - Dividend Comparison
PIODX's dividend yield for the trailing twelve months is around 10.15%, more than VOO's 1.18% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PIODX Pioneer Fund | 10.15% | 10.04% | 14.17% | 2.86% | 4.13% | 16.18% | 5.82% | 9.37% | 15.37% | 21.35% | 20.51% | 14.53% |
VOO Vanguard S&P 500 ETF | 1.18% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Drawdowns
PIODX vs. VOO - Drawdown Comparison
The maximum PIODX drawdown since its inception was -53.40%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for PIODX and VOO.
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Drawdown Indicators
| PIODX | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -53.40% | -33.99% | -19.41% |
Max Drawdown (1Y)Largest decline over 1 year | -12.75% | -11.98% | -0.77% |
Max Drawdown (5Y)Largest decline over 5 years | -26.55% | -24.52% | -2.03% |
Max Drawdown (10Y)Largest decline over 10 years | -30.14% | -33.99% | +3.85% |
Current DrawdownCurrent decline from peak | -7.26% | -5.55% | -1.71% |
Average DrawdownAverage peak-to-trough decline | -8.62% | -3.72% | -4.90% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.84% | 2.55% | +0.29% |
Volatility
PIODX vs. VOO - Volatility Comparison
Pioneer Fund (PIODX) has a higher volatility of 6.29% compared to Vanguard S&P 500 ETF (VOO) at 5.34%. This indicates that PIODX's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PIODX | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.29% | 5.34% | +0.95% |
Volatility (6M)Calculated over the trailing 6-month period | 11.88% | 9.47% | +2.41% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.56% | 18.11% | +3.45% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.11% | 16.82% | +2.29% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.80% | 17.99% | +0.81% |