NSIUX vs. FUMBX

Last updated Jun 3, 2026

NSIUX (Northern Limited Term U.S. Government Fund) and FUMBX (Fidelity Short-Term Treasury Bond Index Fund) are both Government Bonds funds. Over the past 5 years, NSIUX returned 0.59%/yr vs 1.29%/yr for FUMBX. A 0.80 correlation means they provide meaningful diversification when combined. NSIUX charges 0.42%/yr vs 0.03%/yr for FUMBX.

Performance

NSIUX vs. FUMBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Northern Limited Term U.S. Government Fund (NSIUX) and Fidelity Short-Term Treasury Bond Index Fund (FUMBX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NSIUX achieves a -0.06% return, which is significantly lower than FUMBX's 0.19% return.

NSIUX

• 1D: -0.11%
• 1M: -0.01%
• YTD: -0.06%
• 6M: 0.16%
• 1Y: 2.89%
• 3Y*: 3.26%
• 5Y*: 0.59%
• 10Y*: 1.03%

FUMBX

• 1D: -0.10%
• 1M: -0.13%
• YTD: 0.19%
• 6M: 0.46%
• 1Y: 3.39%
• 3Y*: 4.03%
• 5Y*: 1.29%
• 10Y*: —

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

NSIUX vs. FUMBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NSIUX Northern Limited Term U.S. Government Fund	-0.06%	4.74%	2.72%	3.51%	-6.32%	-1.69%	3.87%	4.29%	0.41%	-0.26%
FUMBX Fidelity Short-Term Treasury Bond Index Fund	0.19%	5.83%	3.25%	4.47%	-5.84%	-1.38%	4.22%	4.19%	1.47%	-0.33%

Correlation

The correlation between NSIUX and FUMBX is 0.66, 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	0.66
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (All Time) Calculated using the full available price history since Oct 20, 2017	0.80

The correlation between NSIUX and FUMBX shifts across timeframes, from 0.66 (1 year) to 0.85 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

NSIUX vs. FUMBX — Risk / Return Rank

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

NSIUX

NSIUX Risk / Return Rank: 24
NSIUX Sharpe Ratio Rank: 21
NSIUX Sortino Ratio Rank: 27
NSIUX Omega Ratio Rank: 25
NSIUX Calmar Ratio Rank: 25
NSIUX Martin Ratio Rank: 20

FUMBX

FUMBX Risk / Return Rank: 35
FUMBX Sharpe Ratio Rank: 30
FUMBX Sortino Ratio Rank: 38
FUMBX Omega Ratio Rank: 37
FUMBX Calmar Ratio Rank: 37
FUMBX Martin Ratio Rank: 33

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.

NSIUX vs. FUMBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Northern Limited Term U.S. Government Fund (NSIUX) and Fidelity Short-Term Treasury Bond Index Fund (FUMBX). 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.

	NSIUX	FUMBX	Difference
Sharpe ratio Return per unit of total volatility	1.30	1.60	-0.30
Sortino ratio Return per unit of downside risk	2.14	2.58	-0.43
Omega ratio Gain probability vs. loss probability	1.26	1.32	-0.06
Calmar ratio Return relative to maximum drawdown	1.86	2.36	-0.50
Martin ratio Return relative to average drawdown	5.48	7.59	-2.11
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NSIUX vs. FUMBX - Sharpe Ratio Comparison

The current NSIUX Sharpe Ratio is 1.30, which is comparable to the FUMBX Sharpe Ratio of 1.60. The chart below compares the historical Sharpe Ratios of NSIUX and FUMBX, 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

	NSIUX	FUMBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.30	1.60	-0.30
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.20	0.44	-0.24
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.43	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.97	0.73	+0.24

Drawdowns

NSIUX vs. FUMBX - Drawdown Comparison

The maximum NSIUX drawdown since its inception was -9.56%, which is greater than FUMBX's maximum drawdown of -8.83%. Use the drawdown chart below to compare losses from any high point for NSIUX and FUMBX.

Drawdown Indicators

	NSIUX	FUMBX	Difference
Max Drawdown Largest peak-to-trough decline	-9.56%	-8.83%	-0.73%
Max Drawdown (1Y) Largest decline over 1 year	-1.62%	-1.54%	-0.08%
Max Drawdown (3Y) Largest decline over 3 years	-1.87%	-1.57%	-0.30%
Max Drawdown (5Y) Largest decline over 5 years	-9.15%	-8.60%	-0.55%
Max Drawdown (10Y) Largest decline over 10 years	-9.56%	—	—
Current Drawdown Current decline from peak	-0.99%	-0.77%	-0.22%
Average Drawdown Average peak-to-trough decline	-1.30%	-1.86%	+0.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.55%	0.48%	+0.07%

Volatility

NSIUX vs. FUMBX - Volatility Comparison

Northern Limited Term U.S. Government Fund (NSIUX) and Fidelity Short-Term Treasury Bond Index Fund (FUMBX) have volatilities of 0.67% and 0.69%, 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

	NSIUX	FUMBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.67%	0.69%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	1.50%	1.51%	-0.01%
Volatility (1Y) Calculated over the trailing 1-year period	2.18%	2.06%	+0.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.97%	2.92%	+0.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.43%	2.49%	-0.06%

NSIUX vs. FUMBX - Expense Ratio Comparison

NSIUX has a 0.42% expense ratio, which is higher than FUMBX's 0.03% expense ratio.

Dividends

NSIUX vs. FUMBX - Dividend Comparison

NSIUX's dividend yield for the trailing twelve months is around 3.20%, less than FUMBX's 3.76% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FUMBX Fidelity Short-Term Treasury Bond Index Fund	3.76%	3.51%	2.91%	1.64%	0.86%	1.15%	1.41%	1.88%	1.64%	0.34%	0.00%	0.00%
NSIUX Northern Limited Term U.S. Government Fund	3.20%	2.49%	2.68%	2.34%	1.02%	0.09%	0.46%	1.79%	2.39%	1.30%	0.96%	0.54%

Frequently Asked Questions

Can I hold both NSIUX and FUMBX in my portfolio?

NSIUX and FUMBX have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NSIUX or FUMBX?

FUMBX has higher volatility (0.69%) compared to NSIUX (0.67%). In terms of maximum drawdown, NSIUX dropped -9.56% vs FUMBX's -8.83%.

Which has better risk-adjusted returns?

FUMBX currently has the higher Sharpe Ratio (1.60 vs 1.30), 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.