NSIDX vs. AUERX

Last updated Jun 26, 2026

NSIDX (Northern Small Cap Index Fund) and AUERX (Auer Growth Fund) are both Small Cap Blend Equities funds. Over the past 10 years, NSIDX returned 11.55%/yr vs 16.17%/yr for AUERX. Their correlation of 0.84 suggests significant overlap in exposure. NSIDX charges 0.10%/yr vs 2.37%/yr for AUERX.

Performance

NSIDX vs. AUERX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Northern Small Cap Index Fund (NSIDX) and Auer Growth Fund (AUERX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NSIDX achieves a 21.01% return, which is significantly higher than AUERX's 12.17% return. Over the past 10 years, NSIDX has underperformed AUERX with an annualized return of 11.55%, while AUERX has yielded a comparatively higher 16.17% annualized return.

NSIDX

• 1D: 0.38%
• 1M: 2.41%
• YTD: 21.01%
• 6M: 17.96%
• 1Y: 41.68%
• 3Y*: 19.55%
• 5Y*: 6.37%
• 10Y*: 11.55%

AUERX

• 1D: -2.18%
• 1M: -1.19%
• YTD: 12.17%
• 6M: 10.33%
• 1Y: 40.16%
• 3Y*: 25.57%
• 5Y*: 19.69%
• 10Y*: 16.17%

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

NSIDX vs. AUERX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NSIDX Northern Small Cap Index Fund	21.01%	12.88%	11.45%	16.87%	-20.63%	14.38%	19.59%	25.22%	-11.33%	14.62%
AUERX Auer Growth Fund	12.17%	30.10%	11.12%	21.42%	9.95%	45.11%	-1.85%	27.96%	-25.63%	28.75%

Correlation

The correlation between NSIDX and AUERX is 0.69, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.69
Correlation (3Y) Calculated over the trailing 3-year period	0.76
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (10Y) Calculated over the trailing 10-year period	0.83
Correlation (All Time) Calculated using the full available price history since Dec 26, 2007	0.84

The correlation between NSIDX and AUERX shifts across timeframes, from 0.69 (1 year) to 0.84 (all time), reflecting how their relationship changes across market environments.

Return for Risk

NSIDX vs. AUERX — Risk / Return Rank

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

NSIDX

NSIDX Risk / Return Rank: 77
NSIDX Sharpe Ratio Rank: 75
NSIDX Sortino Ratio Rank: 73
NSIDX Omega Ratio Rank: 62
NSIDX Calmar Ratio Rank: 89
NSIDX Martin Ratio Rank: 86

AUERX

AUERX Risk / Return Rank: 83
AUERX Sharpe Ratio Rank: 83
AUERX Sortino Ratio Rank: 76
AUERX Omega Ratio Rank: 75
AUERX Calmar Ratio Rank: 89
AUERX Martin Ratio Rank: 92

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.

NSIDX vs. AUERX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Northern Small Cap Index Fund (NSIDX) and Auer Growth Fund (AUERX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	NSIDX	AUERX	Difference
Sharpe ratio: Return per unit of total volatility	2.09	2.34	-0.24
Sortino ratio: Return per unit of downside risk	2.94	3.05	-0.11
Omega ratio: Gain probability vs. loss probability	1.35	1.40	-0.05
Calmar ratio: Return relative to maximum drawdown	3.87	3.88	-0.01
Martin ratio: Return relative to average drawdown	13.62	16.12	-2.50

NSIDX vs. AUERX - Sharpe Ratio Comparison

The current NSIDX Sharpe Ratio is 2.09, which is comparable to the AUERX Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of NSIDX and AUERX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

NSIDX vs. AUERX - Drawdown Comparison

The maximum NSIDX drawdown since its inception was -59.02%, smaller than the maximum AUERX drawdown of -67.23%. Use the drawdown chart below to compare losses from any high point for NSIDX and AUERX.

Drawdown Indicators

	NSIDX	AUERX	Difference
Max Drawdown Largest peak-to-trough decline	-59.02%	-67.23%	+8.21%
Max Drawdown (1Y) Largest decline over 1 year	-10.97%	-10.06%	-0.91%
Max Drawdown (3Y) Largest decline over 3 years	-27.71%	-34.80%	+7.09%
Max Drawdown (5Y) Largest decline over 5 years	-32.89%	-34.80%	+1.91%
Max Drawdown (10Y) Largest decline over 10 years	-42.09%	-51.89%	+9.80%
Current Drawdown Current decline from peak	-0.53%	-4.53%	+4.00%
Average Drawdown Average peak-to-trough decline	-12.03%	-24.80%	+12.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.10%	2.42%	+0.68%

Volatility

NSIDX vs. AUERX - Volatility Comparison

Northern Small Cap Index Fund (NSIDX) and Auer Growth Fund (AUERX) have volatilities of 6.44% and 6.25%, 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

	NSIDX	AUERX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.44%	6.25%	+0.19%
Volatility (6M) Calculated over the trailing 6-month period	14.41%	12.43%	+1.98%
Volatility (1Y) Calculated over the trailing 1-year period	20.30%	16.72%	+3.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.31%	24.87%	-0.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.28%	24.40%	-0.12%

NSIDX vs. AUERX - Expense Ratio Comparison

NSIDX has a 0.10% expense ratio, which is lower than AUERX's 2.37% expense ratio.

Dividends

NSIDX vs. AUERX - Dividend Comparison

NSIDX's dividend yield for the trailing twelve months is around 1.30%, less than AUERX's 10.15% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AUERX Auer Growth Fund	10.15%	11.39%	24.55%	4.54%	5.95%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
NSIDX Northern Small Cap Index Fund	1.30%	1.57%	6.72%	2.01%	6.38%	12.15%	3.52%	1.78%	12.16%	6.55%	4.06%	6.68%

Frequently Asked Questions

Can I hold both NSIDX and AUERX in my portfolio?

NSIDX and AUERX have a correlation of 0.69, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NSIDX or AUERX?

NSIDX has higher volatility (6.44%) compared to AUERX (6.25%). In terms of maximum drawdown, NSIDX dropped -59.02% vs AUERX's -67.23%.

Which has better risk-adjusted returns?

AUERX currently has the higher Sharpe Ratio (2.34 vs 2.09), 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.