NMIIX vs. LSMSX

Last updated Jun 24, 2026

NMIIX (Neuberger Berman Municipal Impact Fund) and LSMSX (Western Asset SMASh Series TF Fund) are both Municipal Bonds funds. Their correlation of 0.81 suggests significant overlap in exposure. NMIIX charges 0.43%/yr vs 0.01%/yr for LSMSX.

Performance

NMIIX vs. LSMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Neuberger Berman Municipal Impact Fund (NMIIX) and Western Asset SMASh Series TF Fund (LSMSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

NMIIX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

LSMSX

• 1D: 0.00%
• 1M: 1.91%
• YTD: 2.43%
• 6M: 2.64%
• 1Y: 7.81%
• 3Y*: 3.84%
• 5Y*: 1.16%
• 10Y*: —

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

NMIIX vs. LSMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NMIIX Neuberger Berman Municipal Impact Fund	0.12%	3.89%	1.22%	3.99%	-8.39%	0.88%	4.31%	6.51%	0.97%	2.74%
LSMSX Western Asset SMASh Series TF Fund	2.43%	3.22%	2.22%	7.96%	-10.03%	4.11%	4.48%	8.16%	0.46%	4.92%

Correlation

The correlation between NMIIX and LSMSX is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (All Time) Calculated using the full available price history since Feb 1, 2017	0.81

The correlation between NMIIX and LSMSX shifts across timeframes, from 0.74 (1 year) to 0.86 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

NMIIX vs. LSMSX — Risk / Return Rank

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

NMIIX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

LSMSX

LSMSX Risk / Return Rank: 78
LSMSX Sharpe Ratio Rank: 92
LSMSX Sortino Ratio Rank: 93
LSMSX Omega Ratio Rank: 94
LSMSX Calmar Ratio Rank: 60
LSMSX Martin Ratio Rank: 49

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.

NMIIX vs. LSMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Neuberger Berman Municipal Impact Fund (NMIIX) and Western Asset SMASh Series TF Fund (LSMSX). 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.

	NMIIX	LSMSX	Difference
Sharpe ratio: Return per unit of total volatility	—	2.85	—
Sortino ratio: Return per unit of downside risk	—	4.42	—
Omega ratio: Gain probability vs. loss probability	—	1.70	—
Calmar ratio: Return relative to maximum drawdown	—	2.86	—
Martin ratio: Return relative to average drawdown	—	9.60	—

Drawdowns

Drawdown Indicators

	NMIIX	LSMSX	Difference
Max Drawdown Largest peak-to-trough decline	—	-15.00%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-2.82%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-7.49%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-15.00%	—
Current Drawdown Current decline from peak	—	0.00%	—
Average Drawdown Average peak-to-trough decline	—	-2.84%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.84%	—

Volatility

Volatility by Period

	NMIIX	LSMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.79%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.06%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	2.84%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	4.48%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	4.49%	—

NMIIX vs. LSMSX - Expense Ratio Comparison

NMIIX has a 0.43% expense ratio, which is higher than LSMSX's 0.01% expense ratio.

Dividends

NMIIX vs. LSMSX - Dividend Comparison

NMIIX's dividend yield for the trailing twelve months is around 2.79%, less than LSMSX's 3.84% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LSMSX Western Asset SMASh Series TF Fund	3.84%	3.83%	4.30%	3.37%	2.38%	2.73%	2.33%	2.55%	2.34%	0.90%	0.00%	0.00%
NMIIX Neuberger Berman Municipal Impact Fund	2.79%	2.92%	2.69%	1.77%	1.33%	1.83%	2.23%	2.82%	2.47%	2.32%	3.41%	2.84%

Frequently Asked Questions

Can I hold both NMIIX and LSMSX in my portfolio?

NMIIX and LSMSX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.