PEXMX vs. PREIX
Compare and contrast key facts about T. Rowe Price Extended Equity Market Index Fund (PEXMX) and T. Rowe Price Equity Index 500 Fund (PREIX).
PEXMX is managed by T. Rowe Price. It was launched on Jan 30, 1998. PREIX is managed by T. Rowe Price. It was launched on Mar 30, 1990.
Performance
PEXMX vs. PREIX - Performance Comparison
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PEXMX vs. PREIX - 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% |
PREIX T. Rowe Price Equity Index 500 Fund | -7.11% | 19.24% | 24.78% | 26.07% | -18.27% | 28.48% | 18.17% | 31.47% | -4.59% | 21.01% |
Returns By Period
In the year-to-date period, PEXMX achieves a -4.65% return, which is significantly higher than PREIX's -7.11% return. Over the past 10 years, PEXMX has underperformed PREIX with an annualized return of 10.94%, while PREIX has yielded a comparatively higher 13.66% 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%
PREIX
- 1D
- -0.39%
- 1M
- -7.70%
- YTD
- -7.11%
- 6M
- -3.40%
- 1Y
- 15.76%
- 3Y*
- 17.48%
- 5Y*
- 11.51%
- 10Y*
- 13.66%
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PEXMX vs. PREIX - Expense Ratio Comparison
PEXMX has a 0.23% expense ratio, which is higher than PREIX's 0.15% 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. PREIX — Risk / Return Rank
PEXMX
PREIX
PEXMX vs. PREIX - 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 T. Rowe Price Equity Index 500 Fund (PREIX). 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 | PREIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.87 | 0.91 | -0.05 |
Sortino ratioReturn per unit of downside risk | 1.36 | 1.40 | -0.04 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.22 | -0.03 |
Calmar ratioReturn relative to maximum drawdown | 0.95 | 1.16 | -0.22 |
Martin ratioReturn relative to average drawdown | 3.99 | 5.66 | -1.67 |
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
| PEXMX | PREIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.87 | 0.91 | -0.05 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 0.68 | -0.49 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.50 | 0.76 | -0.26 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.38 | 0.59 | -0.21 |
Correlation
The correlation between PEXMX and PREIX 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. PREIX - Dividend Comparison
PEXMX's dividend yield for the trailing twelve months is around 7.43%, more than PREIX's 3.97% 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% |
PREIX T. Rowe Price Equity Index 500 Fund | 3.97% | 3.66% | 1.17% | 1.32% | 1.50% | 1.56% | 1.97% | 2.13% | 2.60% | 1.30% | 2.03% | 2.02% |
Drawdowns
PEXMX vs. PREIX - Drawdown Comparison
The maximum PEXMX drawdown since its inception was -57.82%, roughly equal to the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for PEXMX and PREIX.
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Drawdown Indicators
| PEXMX | PREIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -57.82% | -55.32% | -2.50% |
Max Drawdown (1Y)Largest decline over 1 year | -14.71% | -12.12% | -2.59% |
Max Drawdown (5Y)Largest decline over 5 years | -36.27% | -24.60% | -11.67% |
Max Drawdown (10Y)Largest decline over 10 years | -41.27% | -33.81% | -7.46% |
Current DrawdownCurrent decline from peak | -10.30% | -8.93% | -1.37% |
Average DrawdownAverage peak-to-trough decline | -13.69% | -8.76% | -4.93% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.08% | 2.49% | +1.59% |
Volatility
PEXMX vs. PREIX - Volatility Comparison
T. Rowe Price Extended Equity Market Index Fund (PEXMX) has a higher volatility of 5.98% compared to T. Rowe Price Equity Index 500 Fund (PREIX) at 4.25%. This indicates that PEXMX's price experiences larger fluctuations and is considered to be riskier than PREIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PEXMX | PREIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.98% | 4.25% | +1.73% |
Volatility (6M)Calculated over the trailing 6-month period | 13.58% | 9.03% | +4.55% |
Volatility (1Y)Calculated over the trailing 1-year period | 23.35% | 18.09% | +5.26% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.48% | 16.95% | +5.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.20% | 18.06% | +4.14% |