PRBLX vs. NOSIX
Compare and contrast key facts about Parnassus Core Equity Fund (PRBLX) and Northern Stock Index Fund (NOSIX).
PRBLX is managed by Parnassus. It was launched on Aug 31, 1992. NOSIX is managed by Northern Funds. It was launched on Oct 7, 1996.
Performance
PRBLX vs. NOSIX - Performance Comparison
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PRBLX vs. NOSIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PRBLX Parnassus Core Equity Fund | -8.62% | 11.67% | 18.58% | 24.97% | -18.64% | 27.59% | 21.21% | 30.68% | -0.30% | 16.63% |
NOSIX Northern Stock Index Fund | -7.06% | 17.83% | 24.87% | 26.24% | -18.25% | 28.55% | 18.33% | 31.35% | -4.54% | 21.71% |
Returns By Period
In the year-to-date period, PRBLX achieves a -8.62% return, which is significantly lower than NOSIX's -7.06% return. Over the past 10 years, PRBLX has underperformed NOSIX with an annualized return of 11.97%, while NOSIX has yielded a comparatively higher 13.65% annualized return.
PRBLX
- 1D
- 0.02%
- 1M
- -8.59%
- YTD
- -8.62%
- 6M
- -7.14%
- 1Y
- 4.60%
- 3Y*
- 12.03%
- 5Y*
- 7.94%
- 10Y*
- 11.97%
NOSIX
- 1D
- -0.39%
- 1M
- -7.68%
- YTD
- -7.06%
- 6M
- -4.59%
- 1Y
- 14.42%
- 3Y*
- 17.12%
- 5Y*
- 11.31%
- 10Y*
- 13.65%
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PRBLX vs. NOSIX - Expense Ratio Comparison
PRBLX has a 0.82% expense ratio, which is higher than NOSIX's 0.05% expense ratio.
Return for Risk
PRBLX vs. NOSIX — Risk / Return Rank
PRBLX
NOSIX
PRBLX vs. NOSIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Parnassus Core Equity Fund (PRBLX) and Northern Stock Index Fund (NOSIX). 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.
| PRBLX | NOSIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.30 | 0.79 | -0.49 |
Sortino ratioReturn per unit of downside risk | 0.55 | 1.28 | -0.73 |
Omega ratioGain probability vs. loss probability | 1.08 | 1.20 | -0.12 |
Calmar ratioReturn relative to maximum drawdown | 0.24 | 0.88 | -0.64 |
Martin ratioReturn relative to average drawdown | 0.86 | 4.18 | -3.32 |
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
| PRBLX | NOSIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.30 | 0.79 | -0.49 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.49 | 0.66 | -0.17 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.70 | 0.75 | -0.06 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.69 | 0.47 | +0.22 |
Correlation
The correlation between PRBLX and NOSIX is 0.89, 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
PRBLX vs. NOSIX - Dividend Comparison
PRBLX's dividend yield for the trailing twelve months is around 20.83%, more than NOSIX's 3.17% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRBLX Parnassus Core Equity Fund | 20.83% | 19.08% | 10.00% | 6.01% | 10.13% | 7.77% | 5.87% | 8.02% | 9.64% | 7.16% | 3.80% | 9.62% |
NOSIX Northern Stock Index Fund | 3.17% | 2.94% | 2.59% | 5.02% | 4.72% | 3.22% | 4.00% | 2.41% | 4.82% | 3.13% | 2.76% | 3.36% |
Drawdowns
PRBLX vs. NOSIX - Drawdown Comparison
The maximum PRBLX drawdown since its inception was -42.20%, smaller than the maximum NOSIX drawdown of -55.42%. Use the drawdown chart below to compare losses from any high point for PRBLX and NOSIX.
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Drawdown Indicators
| PRBLX | NOSIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -42.20% | -55.42% | +13.22% |
Max Drawdown (1Y)Largest decline over 1 year | -11.63% | -12.11% | +0.48% |
Max Drawdown (5Y)Largest decline over 5 years | -26.31% | -24.54% | -1.77% |
Max Drawdown (10Y)Largest decline over 10 years | -30.09% | -33.82% | +3.73% |
Current DrawdownCurrent decline from peak | -11.61% | -8.89% | -2.72% |
Average DrawdownAverage peak-to-trough decline | -4.06% | -10.39% | +6.33% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.17% | 2.67% | +0.50% |
Volatility
PRBLX vs. NOSIX - Volatility Comparison
Parnassus Core Equity Fund (PRBLX) and Northern Stock Index Fund (NOSIX) have volatilities of 4.09% and 4.24%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PRBLX | NOSIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.09% | 4.24% | -0.15% |
Volatility (6M)Calculated over the trailing 6-month period | 8.57% | 9.20% | -0.63% |
Volatility (1Y)Calculated over the trailing 1-year period | 16.68% | 19.35% | -2.67% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.19% | 17.16% | -0.97% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.22% | 18.17% | -0.95% |