MYMF vs. SUB

Last updated Apr 15, 2026

MYMF (State Street My2026 Municipal Bond ETF) and SUB (iShares Short-Term National Muni Bond ETF) are both Municipal Bonds funds. MYMF is actively managed, while SUB is passively managed. Over the past year, MYMF returned 3.96% vs 3.96% for SUB. At 0.49, their price movements are largely independent. MYMF charges 0.20%/yr vs 0.07%/yr for SUB.

Performance

MYMF vs. SUB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street My2026 Municipal Bond ETF (MYMF) and iShares Short-Term National Muni Bond ETF (SUB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with MYMF having a 0.51% return and SUB slightly higher at 0.52%.

MYMF

• 1D: 0.04%
• 1M: -0.05%
• YTD: 0.51%
• 6M: 1.11%
• 1Y: 3.96%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SUB

• 1D: -0.03%
• 1M: -0.14%
• YTD: 0.52%
• 6M: 1.11%
• 1Y: 3.96%
• 3Y*: 2.74%
• 5Y*: 1.40%
• 10Y*: 1.47%

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

MYMF vs. SUB - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MYMF State Street My2026 Municipal Bond ETF	0.51%	3.01%	0.19%
SUB iShares Short-Term National Muni Bond ETF	0.52%	3.64%	0.06%

Correlation

The correlation between MYMF and SUB is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.34
Correlation (All Time) Calculated using the full available price history since Sep 25, 2024	0.49

The correlation between MYMF and SUB shifts across timeframes, from 0.34 (1 year) to 0.49 (all time), reflecting how their relationship changes across market environments.

Return for Risk

MYMF vs. SUB — Risk / Return Rank

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

MYMF

MYMF Risk / Return Rank: 98
MYMF Sharpe Ratio Rank: 97
MYMF Sortino Ratio Rank: 98
MYMF Omega Ratio Rank: 98
MYMF Calmar Ratio Rank: 98
MYMF Martin Ratio Rank: 98

SUB

SUB Risk / Return Rank: 90
SUB Sharpe Ratio Rank: 95
SUB Sortino Ratio Rank: 96
SUB Omega Ratio Rank: 97
SUB Calmar Ratio Rank: 84
SUB Martin Ratio Rank: 75

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.

MYMF vs. SUB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street My2026 Municipal Bond ETF (MYMF) and iShares Short-Term National Muni Bond ETF (SUB). 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.

	MYMF	SUB	Difference
Sharpe ratio Return per unit of total volatility	4.45	3.93	+0.52
Sortino ratio Return per unit of downside risk	8.11	5.87	+2.23
Omega ratio Gain probability vs. loss probability	2.40	1.92	+0.48
Calmar ratio Return relative to maximum drawdown	14.47	4.93	+9.54
Martin ratio Return relative to average drawdown	67.80	16.09	+51.71
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MYMF vs. SUB - Sharpe Ratio Comparison

The current MYMF Sharpe Ratio is 4.45, which is comparable to the SUB Sharpe Ratio of 3.93. The chart below compares the historical Sharpe Ratios of MYMF and SUB, 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

	MYMF	SUB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.45	3.93	+0.52
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.86	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.57	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.41	0.42	+0.99

Drawdowns

MYMF vs. SUB - Drawdown Comparison

The maximum MYMF drawdown since its inception was -2.02%, smaller than the maximum SUB drawdown of -9.46%. Use the drawdown chart below to compare losses from any high point for MYMF and SUB.

Drawdown Indicators

	MYMF	SUB	Difference
Max Drawdown Largest peak-to-trough decline	-2.02%	-9.46%	+7.44%
Max Drawdown (1Y) Largest decline over 1 year	-0.26%	-0.81%	+0.55%
Max Drawdown (5Y) Largest decline over 5 years	—	-4.35%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-9.46%	—
Current Drawdown Current decline from peak	-0.12%	-0.37%	+0.25%
Average Drawdown Average peak-to-trough decline	-0.18%	-0.92%	+0.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.25%	-0.19%

Volatility

MYMF vs. SUB - Volatility Comparison

The current volatility for State Street My2026 Municipal Bond ETF (MYMF) is 0.26%, while iShares Short-Term National Muni Bond ETF (SUB) has a volatility of 0.53%. This indicates that MYMF experiences smaller price fluctuations and is considered to be less risky than SUB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MYMF	SUB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.26%	0.53%	-0.27%
Volatility (6M) Calculated over the trailing 6-month period	0.46%	0.82%	-0.36%
Volatility (1Y) Calculated over the trailing 1-year period	0.94%	1.03%	-0.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.71%	1.64%	+0.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.71%	2.60%	-0.89%

MYMF vs. SUB - Expense Ratio Comparison

MYMF has a 0.20% expense ratio, which is higher than SUB's 0.07% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

MYMF vs. SUB - Dividend Comparison

MYMF's dividend yield for the trailing twelve months is around 2.64%, more than SUB's 2.48% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MYMF State Street My2026 Municipal Bond ETF	2.64%	2.80%	0.83%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SUB iShares Short-Term National Muni Bond ETF	2.48%	2.42%	2.10%	1.73%	0.86%	0.72%	1.23%	1.58%	1.32%	0.95%	0.75%	0.77%