MPSTX vs. LSMSX

Last updated Apr 1, 2026

Compare and contrast key facts about BNY Mellon National Short Term Municipal Bond Fund (MPSTX) and Western Asset SMASh Series TF Fund (LSMSX).

MPSTX is managed by BNY Mellon. It was launched on Oct 1, 2000. LSMSX is managed by Franklin Templeton. It was launched on Dec 22, 2015.

Performance

MPSTX vs. LSMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon National Short Term Municipal Bond Fund (MPSTX) and Western Asset SMASh Series TF Fund (LSMSX). The values are adjusted to include any dividend payments, if applicable.

MPSTX vs. LSMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MPSTX BNY Mellon National Short Term Municipal Bond Fund	100.63%	4.68%	2.87%	3.22%	-2.83%	0.06%	1.94%	3.05%	1.25%	0.75%
LSMSX Western Asset SMASh Series TF Fund	-0.27%	3.22%	2.22%	7.96%	-10.03%	4.11%	4.48%	8.16%	0.46%	4.92%

Returns By Period

MPSTX

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

LSMSX

• 1D: 0.21%
• 1M: -2.62%
• YTD: -0.27%
• 6M: 1.22%
• 1Y: 3.63%
• 3Y*: 3.26%
• 5Y*: 1.12%
• 10Y*: —

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

MPSTX vs. LSMSX - Expense Ratio Comparison

MPSTX has a 0.44% expense ratio, which is higher than LSMSX's 0.01% expense ratio.

MPSTX

BNY Mellon National Short Term Municipal Bond Fund

LSMSX

Western Asset SMASh Series TF Fund

Return for Risk

MPSTX vs. LSMSX — Risk / Return Rank

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

LSMSX

LSMSX Risk / Return Rank: 26
LSMSX Sharpe Ratio Rank: 26
LSMSX Sortino Ratio Rank: 20
LSMSX Omega Ratio Rank: 44
LSMSX Calmar Ratio Rank: 23
LSMSX Martin Ratio Rank: 19

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.

MPSTX vs. LSMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon National Short Term Municipal Bond Fund (MPSTX) 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.

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

Sharpe Ratios by Period

	MPSTX	LSMSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	0.67	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.25	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.58	—

Correlation

The correlation between MPSTX and LSMSX is 0.57, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

MPSTX vs. LSMSX - Dividend Comparison

MPSTX's dividend yield for the trailing twelve months is around 1.13%, less than LSMSX's 3.97% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MPSTX BNY Mellon National Short Term Municipal Bond Fund	1.13%	3.53%	2.43%	1.39%	1.02%	0.91%	1.22%	1.67%	1.24%	0.99%	0.91%	0.92%
LSMSX Western Asset SMASh Series TF Fund	3.97%	3.83%	4.30%	3.37%	2.38%	2.73%	2.33%	2.55%	2.34%	0.90%	0.00%	0.00%

Drawdowns

Drawdown Indicators

	MPSTX	LSMSX	Difference
Max Drawdown Largest peak-to-trough decline	—	-15.00%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-6.21%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-15.00%	—
Current Drawdown Current decline from peak	—	-2.62%	—
Average Drawdown Average peak-to-trough decline	—	-2.88%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	2.21%	—

Volatility

Volatility by Period

	MPSTX	LSMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	1.10%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.60%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	5.78%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	4.44%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	4.52%	—