NOIEX vs. NOSIX

Last updated Jun 4, 2026

NOIEX (Northern Income Equity Fund) and NOSIX (Northern Stock Index Fund) are both mutual funds - NOIEX is a Large Cap Value Equities fund managed by Northern Funds, while NOSIX is a Large Cap Blend Equities fund managed by Northern Funds. Over the past 10 years, NOIEX returned 14.02%/yr vs 15.56%/yr for NOSIX. Their correlation of 0.87 suggests significant overlap in exposure. NOIEX charges 0.49%/yr vs 0.05%/yr for NOSIX.

Performance

NOIEX vs. NOSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Northern Income Equity Fund (NOIEX) and Northern Stock Index Fund (NOSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NOIEX achieves a 12.80% return, which is significantly higher than NOSIX's 11.68% return. Over the past 10 years, NOIEX has underperformed NOSIX with an annualized return of 14.02%, while NOSIX has yielded a comparatively higher 15.56% annualized return.

NOIEX

• 1D: 0.39%
• 1M: 6.04%
• YTD: 12.80%
• 6M: 13.13%
• 1Y: 30.77%
• 3Y*: 22.92%
• 5Y*: 14.24%
• 10Y*: 14.02%

NOSIX

• 1D: 0.13%
• 1M: 5.79%
• YTD: 11.68%
• 6M: 11.72%
• 1Y: 28.94%
• 3Y*: 22.69%
• 5Y*: 14.18%
• 10Y*: 15.56%

*Multi-year figures are annualized to reflect compound growth (CAGR)

NOIEX vs. NOSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NOIEX Northern Income Equity Fund	12.80%	18.81%	24.28%	19.56%	-13.34%	27.96%	11.03%	27.04%	-6.62%	20.22%
NOSIX Northern Stock Index Fund	11.68%	17.83%	24.87%	26.24%	-18.25%	28.55%	18.33%	31.35%	-4.54%	21.71%

Correlation

The correlation between NOIEX and NOSIX is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.96
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since Oct 8, 1996	0.87

The correlation between NOIEX and NOSIX shifts across timeframes, from 0.87 (all time) to 0.98 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

NOIEX vs. NOSIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

NOIEX

NOIEX Risk / Return Rank: 83
NOIEX Sharpe Ratio Rank: 85
NOIEX Sortino Ratio Rank: 80
NOIEX Omega Ratio Rank: 78
NOIEX Calmar Ratio Rank: 83
NOIEX Martin Ratio Rank: 89

NOSIX

NOSIX Risk / Return Rank: 74
NOSIX Sharpe Ratio Rank: 76
NOSIX Sortino Ratio Rank: 69
NOSIX Omega Ratio Rank: 69
NOSIX Calmar Ratio Rank: 74
NOSIX Martin Ratio Rank: 83

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

NOIEX vs. NOSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Northern Income Equity Fund (NOIEX) 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.

	NOIEX	NOSIX	Difference
Sharpe ratio: Return per unit of total volatility	2.74	2.52	+0.22
Sortino ratio: Return per unit of downside risk	3.79	3.46	+0.33
Omega ratio: Gain probability vs. loss probability	1.51	1.47	+0.04
Calmar ratio: Return relative to maximum drawdown	3.85	3.38	+0.46
Martin ratio: Return relative to average drawdown	17.52	15.86	+1.66
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NOIEX vs. NOSIX - Sharpe Ratio Comparison

The current NOIEX Sharpe Ratio is 2.74, which is comparable to the NOSIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of NOIEX and NOSIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	NOIEX	NOSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.74	2.52	+0.22
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.83	+0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.78	0.86	-0.07
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.50	+0.19

Drawdowns

NOIEX vs. NOSIX - Drawdown Comparison

The maximum NOIEX drawdown since its inception was -45.66%, smaller than the maximum NOSIX drawdown of -55.42%. Use the drawdown chart below to compare losses from any high point for NOIEX and NOSIX.

Drawdown Indicators

	NOIEX	NOSIX	Difference
Max Drawdown Largest peak-to-trough decline	-45.66%	-55.42%	+9.76%
Max Drawdown (1Y) Largest decline over 1 year	-8.39%	-8.89%	+0.50%
Max Drawdown (3Y) Largest decline over 3 years	-18.06%	-18.75%	+0.69%
Max Drawdown (5Y) Largest decline over 5 years	-21.89%	-24.54%	+2.65%
Max Drawdown (10Y) Largest decline over 10 years	-35.31%	-33.82%	-1.49%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-4.99%	-10.33%	+5.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.82%	1.89%	-0.07%

Volatility

NOIEX vs. NOSIX - Volatility Comparison

Northern Income Equity Fund (NOIEX) and Northern Stock Index Fund (NOSIX) have volatilities of 2.73% and 2.82%, 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.

Volatility by Period

	NOIEX	NOSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.73%	2.82%	-0.09%
Volatility (6M) Calculated over the trailing 6-month period	8.71%	8.97%	-0.26%
Volatility (1Y) Calculated over the trailing 1-year period	11.78%	11.95%	-0.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.36%	17.20%	-0.84%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.96%	18.21%	-0.25%

NOIEX vs. NOSIX - Expense Ratio Comparison

NOIEX has a 0.49% expense ratio, which is higher than NOSIX's 0.05% expense ratio.

Dividends

NOIEX vs. NOSIX - Dividend Comparison

NOIEX's dividend yield for the trailing twelve months is around 7.15%, more than NOSIX's 2.64% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NOIEX Northern Income Equity Fund	7.15%	7.92%	6.11%	7.03%	5.44%	14.26%	7.67%	8.58%	15.73%	7.56%	3.02%	5.57%
NOSIX Northern Stock Index Fund	2.64%	2.94%	2.59%	5.02%	4.72%	3.22%	4.00%	2.41%	4.82%	3.13%	2.76%	3.36%

Frequently Asked Questions

Can I hold both NOIEX and NOSIX in my portfolio?

With a correlation of 0.96, NOIEX and NOSIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, NOIEX or NOSIX?

NOSIX has higher volatility (2.82%) compared to NOIEX (2.73%). In terms of maximum drawdown, NOIEX dropped -45.66% vs NOSIX's -55.42%.

Which has better risk-adjusted returns?

NOIEX currently has the higher Sharpe Ratio (2.74 vs 2.52), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.