FASUX vs. LSMSX

Last updated Jun 23, 2026

FASUX (Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I) and LSMSX (Western Asset SMASh Series TF Fund) are both Municipal Bonds funds. Over the past 3 years, FASUX returned 3.97%/yr vs 3.98%/yr for LSMSX. Their correlation of 0.84 suggests significant overlap in exposure. FASUX charges 0.37%/yr vs 0.01%/yr for LSMSX.

Performance

FASUX vs. LSMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I (FASUX) and Western Asset SMASh Series TF Fund (LSMSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FASUX achieves a 0.96% return, which is significantly lower than LSMSX's 2.43% return.

FASUX

• 1D: 0.10%
• 1M: 1.35%
• YTD: 0.96%
• 6M: 1.33%
• 1Y: 5.92%
• 3Y*: 3.97%
• 5Y*: —
• 10Y*: —

LSMSX

• 1D: 0.10%
• 1M: 1.91%
• YTD: 2.43%
• 6M: 2.64%
• 1Y: 8.04%
• 3Y*: 3.98%
• 5Y*: 1.14%
• 10Y*: —

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

FASUX vs. LSMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
FASUX Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I	0.96%	5.32%	1.38%	5.99%	0.34%
LSMSX Western Asset SMASh Series TF Fund	2.43%	3.22%	2.22%	7.96%	-0.72%

Correlation

The correlation between FASUX and LSMSX is 0.72, 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	0.72
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (All Time) Calculated using the full available price history since Apr 27, 2022	0.84

The correlation between FASUX and LSMSX shifts across timeframes, from 0.72 (1 year) to 0.84 (all time), reflecting how their relationship changes across market environments.

Return for Risk

FASUX vs. LSMSX — Risk / Return Rank

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

FASUX

FASUX Risk / Return Rank: 65
FASUX Sharpe Ratio Rank: 85
FASUX Sortino Ratio Rank: 87
FASUX Omega Ratio Rank: 93
FASUX Calmar Ratio Rank: 32
FASUX Martin Ratio Rank: 29

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: 61
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.

FASUX vs. LSMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I (FASUX) 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.

	FASUX	LSMSX	Difference
Sharpe ratio: Return per unit of total volatility	2.55	2.85	-0.30
Sortino ratio: Return per unit of downside risk	3.84	4.42	-0.59
Omega ratio: Gain probability vs. loss probability	1.67	1.70	-0.03
Calmar ratio: Return relative to maximum drawdown	2.00	2.86	-0.86
Martin ratio: Return relative to average drawdown	6.24	9.60	-3.37

FASUX vs. LSMSX - Sharpe Ratio Comparison

The current FASUX Sharpe Ratio is 2.55, which is comparable to the LSMSX Sharpe Ratio of 2.85. The chart below compares the historical Sharpe Ratios of FASUX and LSMSX, 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

FASUX vs. LSMSX - Drawdown Comparison

The maximum FASUX drawdown since its inception was -5.97%, smaller than the maximum LSMSX drawdown of -15.00%. Use the drawdown chart below to compare losses from any high point for FASUX and LSMSX.

Drawdown Indicators

	FASUX	LSMSX	Difference
Max Drawdown Largest peak-to-trough decline	-5.97%	-15.00%	+9.03%
Max Drawdown (1Y) Largest decline over 1 year	-2.97%	-2.82%	-0.15%
Max Drawdown (3Y) Largest decline over 3 years	-4.17%	-7.49%	+3.32%
Max Drawdown (5Y) Largest decline over 5 years	—	-15.00%	—
Current Drawdown Current decline from peak	-0.96%	0.00%	-0.96%
Average Drawdown Average peak-to-trough decline	-1.28%	-2.84%	+1.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.95%	0.84%	+0.11%

Volatility

FASUX vs. LSMSX - Volatility Comparison

The current volatility for Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I (FASUX) is 0.64%, while Western Asset SMASh Series TF Fund (LSMSX) has a volatility of 0.79%. This indicates that FASUX experiences smaller price fluctuations and is considered to be less risky than LSMSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FASUX	LSMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.64%	0.79%	-0.15%
Volatility (6M) Calculated over the trailing 6-month period	1.89%	2.06%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	2.33%	2.83%	-0.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.49%	4.48%	-0.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.49%	4.50%	-1.01%

FASUX vs. LSMSX - Expense Ratio Comparison

FASUX has a 0.37% expense ratio, which is higher than LSMSX's 0.01% expense ratio.

Dividends

FASUX vs. LSMSX - Dividend Comparison

FASUX's dividend yield for the trailing twelve months is around 3.07%, less than LSMSX's 3.84% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FASUX Fidelity Advisor Sustainable Intermediate Municipal Income Fund Class I	3.07%	3.06%	3.06%	2.57%	1.14%	0.00%	0.00%	0.00%	0.00%	0.00%
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%

Frequently Asked Questions

Can I hold both FASUX and LSMSX in my portfolio?

FASUX and LSMSX have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FASUX or LSMSX?

LSMSX has higher volatility (0.79%) compared to FASUX (0.64%). In terms of maximum drawdown, FASUX dropped -5.97% vs LSMSX's -15.00%.

Which has better risk-adjusted returns?

LSMSX currently has the higher Sharpe Ratio (2.85 vs 2.55), 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.