PEXMX vs. NSIDX
Compare and contrast key facts about T. Rowe Price Extended Equity Market Index Fund (PEXMX) and Northern Small Cap Index Fund (NSIDX).
PEXMX is managed by T. Rowe Price. It was launched on Jan 30, 1998. NSIDX is managed by Northern Funds. It was launched on Sep 3, 1999.
Performance
PEXMX vs. NSIDX - Performance Comparison
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PEXMX vs. NSIDX - 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% |
NSIDX Northern Small Cap Index Fund | -2.46% | 12.88% | 11.45% | 16.87% | -20.63% | 14.38% | 19.59% | 25.22% | -11.33% | 14.62% |
Returns By Period
In the year-to-date period, PEXMX achieves a -4.65% return, which is significantly lower than NSIDX's -2.46% return. Over the past 10 years, PEXMX has outperformed NSIDX with an annualized return of 10.94%, while NSIDX has yielded a comparatively lower 9.29% 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%
NSIDX
- 1D
- -1.44%
- 1M
- -8.16%
- YTD
- -2.46%
- 6M
- -0.28%
- 1Y
- 21.64%
- 3Y*
- 11.75%
- 5Y*
- 2.93%
- 10Y*
- 9.29%
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PEXMX vs. NSIDX - Expense Ratio Comparison
PEXMX has a 0.23% expense ratio, which is higher than NSIDX's 0.10% 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. NSIDX — Risk / Return Rank
PEXMX
NSIDX
PEXMX vs. NSIDX - 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 Northern Small Cap Index Fund (NSIDX). 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 | NSIDX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.87 | 0.85 | +0.02 |
Sortino ratioReturn per unit of downside risk | 1.36 | 1.38 | -0.02 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.18 | +0.01 |
Calmar ratioReturn relative to maximum drawdown | 0.95 | 1.10 | -0.16 |
Martin ratioReturn relative to average drawdown | 3.99 | 4.24 | -0.24 |
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 | NSIDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.87 | 0.85 | +0.02 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 0.12 | +0.07 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.50 | 0.39 | +0.11 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.38 | 0.31 | +0.07 |
Correlation
The correlation between PEXMX and NSIDX is 0.96, 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. NSIDX - Dividend Comparison
PEXMX's dividend yield for the trailing twelve months is around 7.43%, more than NSIDX's 1.61% 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% |
NSIDX Northern Small Cap Index Fund | 1.61% | 1.57% | 6.72% | 2.01% | 6.38% | 12.15% | 3.52% | 1.78% | 12.16% | 6.55% | 4.06% | 6.68% |
Drawdowns
PEXMX vs. NSIDX - Drawdown Comparison
The maximum PEXMX drawdown since its inception was -57.82%, roughly equal to the maximum NSIDX drawdown of -59.02%. Use the drawdown chart below to compare losses from any high point for PEXMX and NSIDX.
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Drawdown Indicators
| PEXMX | NSIDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -57.82% | -59.02% | +1.20% |
Max Drawdown (1Y)Largest decline over 1 year | -14.71% | -14.13% | -0.58% |
Max Drawdown (5Y)Largest decline over 5 years | -36.27% | -32.89% | -3.38% |
Max Drawdown (10Y)Largest decline over 10 years | -41.27% | -42.09% | +0.82% |
Current DrawdownCurrent decline from peak | -10.30% | -10.97% | +0.67% |
Average DrawdownAverage peak-to-trough decline | -13.69% | -12.13% | -1.56% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.08% | 3.97% | +0.11% |
Volatility
PEXMX vs. NSIDX - Volatility Comparison
The current volatility for T. Rowe Price Extended Equity Market Index Fund (PEXMX) is 5.98%, while Northern Small Cap Index Fund (NSIDX) has a volatility of 6.56%. This indicates that PEXMX experiences smaller price fluctuations and is considered to be less risky than NSIDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PEXMX | NSIDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.98% | 6.56% | -0.58% |
Volatility (6M)Calculated over the trailing 6-month period | 13.58% | 14.92% | -1.34% |
Volatility (1Y)Calculated over the trailing 1-year period | 23.35% | 25.02% | -1.67% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.48% | 24.20% | -1.72% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.20% | 24.19% | -1.99% |