PEXMX vs. VOO
Compare and contrast key facts about T. Rowe Price Extended Equity Market Index Fund (PEXMX) and Vanguard S&P 500 ETF (VOO).
PEXMX is managed by T. Rowe Price. It was launched on Jan 30, 1998. 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
PEXMX vs. VOO - Performance Comparison
Loading graphics...
PEXMX vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PEXMX T. Rowe Price Extended Equity Market Index Fund | -4.65% | 14.64% | 16.72% | 25.32% | -26.15% | 12.09% | 30.80% | 32.57% | -9.61% | 16.63% |
VOO Vanguard S&P 500 ETF | -4.42% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Returns By Period
The year-to-date returns for both investments are quite close, with PEXMX having a -4.65% return and VOO slightly higher at -4.42%. Over the past 10 years, PEXMX has underperformed VOO with an annualized return of 10.94%, while VOO has yielded a comparatively higher 14.05% annualized return.
PEXMX
- 1D
- -1.01%
- 1M
- -7.83%
- YTD
- -4.65%
- 6M
- -1.56%
- 1Y
- 20.04%
- 3Y*
- 14.72%
- 5Y*
- 4.22%
- 10Y*
- 10.94%
VOO
- 1D
- 2.86%
- 1M
- -5.01%
- YTD
- -4.42%
- 6M
- -1.84%
- 1Y
- 17.67%
- 3Y*
- 18.27%
- 5Y*
- 11.75%
- 10Y*
- 14.05%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
PEXMX vs. VOO - Expense Ratio Comparison
PEXMX has a 0.23% expense ratio, which is higher than VOO's 0.03% 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%.
Return for Risk
PEXMX vs. VOO — Risk / Return Rank
PEXMX
VOO
PEXMX vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Extended Equity Market Index Fund (PEXMX) 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.
| PEXMX | VOO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.87 | 0.98 | -0.11 |
Sortino ratioReturn per unit of downside risk | 1.36 | 1.50 | -0.14 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.23 | -0.04 |
Calmar ratioReturn relative to maximum drawdown | 0.95 | 1.53 | -0.59 |
Martin ratioReturn relative to average drawdown | 3.99 | 7.29 | -3.30 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| PEXMX | VOO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.87 | 0.98 | -0.11 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 0.70 | -0.51 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.50 | 0.78 | -0.29 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.38 | 0.83 | -0.45 |
Correlation
The correlation between PEXMX and VOO is 0.87, 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
PEXMX vs. VOO - Dividend Comparison
PEXMX's dividend yield for the trailing twelve months is around 7.43%, more than VOO's 1.19% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PEXMX T. Rowe Price Extended Equity Market Index Fund | 7.43% | 7.08% | 7.64% | 3.64% | 7.53% | 14.87% | 2.99% | 8.17% | 6.67% | 4.50% | 5.90% | 4.81% |
VOO Vanguard S&P 500 ETF | 1.19% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Drawdowns
PEXMX vs. VOO - Drawdown Comparison
The maximum PEXMX drawdown since its inception was -57.82%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for PEXMX and VOO.
Loading graphics...
Drawdown Indicators
| PEXMX | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -57.82% | -33.99% | -23.83% |
Max Drawdown (1Y)Largest decline over 1 year | -14.71% | -11.98% | -2.73% |
Max Drawdown (5Y)Largest decline over 5 years | -36.27% | -24.52% | -11.75% |
Max Drawdown (10Y)Largest decline over 10 years | -41.27% | -33.99% | -7.28% |
Current DrawdownCurrent decline from peak | -10.30% | -6.29% | -4.01% |
Average DrawdownAverage peak-to-trough decline | -13.69% | -3.72% | -9.97% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.08% | 2.52% | +1.56% |
Volatility
PEXMX vs. VOO - Volatility Comparison
T. Rowe Price Extended Equity Market Index Fund (PEXMX) has a higher volatility of 5.98% compared to Vanguard S&P 500 ETF (VOO) at 5.29%. This indicates that PEXMX'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.
Loading graphics...
Volatility by Period
| PEXMX | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.98% | 5.29% | +0.69% |
Volatility (6M)Calculated over the trailing 6-month period | 13.58% | 9.44% | +4.14% |
Volatility (1Y)Calculated over the trailing 1-year period | 23.35% | 18.10% | +5.25% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.48% | 16.82% | +5.66% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.20% | 17.99% | +4.21% |