DFSMX vs. DFABX

Last updated Jun 4, 2026

DFSMX (DFA Short Term Municipal Bond Portfolio) and DFABX (DFA Short-Term Selective State Municipal Bond Portfolio) are both Municipal Bonds funds from Dimensional. Over the past 3 years, DFSMX returned 2.71%/yr vs 2.82%/yr for DFABX. At a 0.42 correlation, their price movements are largely independent. DFSMX charges 0.20%/yr vs 0.25%/yr for DFABX.

Performance

DFSMX vs. DFABX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in DFA Short Term Municipal Bond Portfolio (DFSMX) and DFA Short-Term Selective State Municipal Bond Portfolio (DFABX). 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 DFSMX having a 0.95% return and DFABX slightly higher at 0.98%.

DFSMX

• 1D: 0.00%
• 1M: 0.20%
• YTD: 0.95%
• 6M: 1.17%
• 1Y: 2.48%
• 3Y*: 2.71%
• 5Y*: 1.70%
• 10Y*: 1.26%

DFABX

• 1D: 0.00%
• 1M: 0.20%
• YTD: 0.98%
• 6M: 1.10%
• 1Y: 2.66%
• 3Y*: 2.82%
• 5Y*: —
• 10Y*: —

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

DFSMX vs. DFABX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
DFSMX DFA Short Term Municipal Bond Portfolio	0.95%	2.30%	2.84%	2.98%	0.62%
DFABX DFA Short-Term Selective State Municipal Bond Portfolio	0.98%	2.46%	2.90%	2.87%	0.55%

Correlation

The correlation between DFSMX and DFABX is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (All Time) Calculated using the full available price history since Apr 18, 2022	0.42

Over the past year, the correlation between DFSMX and DFABX has dropped to 0.13 - well below their long-term average of 0.42, suggesting their price drivers have been diverging.

Return for Risk

DFSMX vs. DFABX — Risk / Return Rank

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

DFSMX

DFSMX Risk / Return Rank: 99
DFSMX Sharpe Ratio Rank: 99
DFSMX Sortino Ratio Rank: 99
DFSMX Omega Ratio Rank: 100
DFSMX Calmar Ratio Rank: 99
DFSMX Martin Ratio Rank: 100

DFABX

DFABX Risk / Return Rank: 100
DFABX Sharpe Ratio Rank: 99
DFABX Sortino Ratio Rank: 100
DFABX Omega Ratio Rank: 100
DFABX Calmar Ratio Rank: 100
DFABX Martin Ratio Rank: 100

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.

DFSMX vs. DFABX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for DFA Short Term Municipal Bond Portfolio (DFSMX) and DFA Short-Term Selective State Municipal Bond Portfolio (DFABX). 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.

	DFSMX	DFABX	Difference
Sharpe ratio: Return per unit of total volatility	4.16	4.77	-0.61
Sortino ratio: Return per unit of downside risk	8.56	12.57	-4.01
Omega ratio: Gain probability vs. loss probability	4.46	6.47	-2.01
Calmar ratio: Return relative to maximum drawdown	12.85	24.96	-12.10
Martin ratio: Return relative to average drawdown	76.74	107.63	-30.90
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DFSMX vs. DFABX - Sharpe Ratio Comparison

The current DFSMX Sharpe Ratio is 4.16, which is comparable to the DFABX Sharpe Ratio of 4.77. The chart below compares the historical Sharpe Ratios of DFSMX and DFABX, 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

	DFSMX	DFABX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.16	4.77	-0.61
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.18	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.64	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.79	2.48	-0.69

Drawdowns

DFSMX vs. DFABX - Drawdown Comparison

The maximum DFSMX drawdown since its inception was -2.66%, which is greater than DFABX's maximum drawdown of -2.46%. Use the drawdown chart below to compare losses from any high point for DFSMX and DFABX.

Drawdown Indicators

	DFSMX	DFABX	Difference
Max Drawdown Largest peak-to-trough decline	-2.66%	-2.46%	-0.20%
Max Drawdown (1Y) Largest decline over 1 year	-0.20%	-0.11%	-0.09%
Max Drawdown (3Y) Largest decline over 3 years	-0.49%	-0.60%	+0.11%
Max Drawdown (5Y) Largest decline over 5 years	-1.66%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-1.69%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.23%	-0.24%	+0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.03%	0.02%	+0.01%

Volatility

DFSMX vs. DFABX - Volatility Comparison

The current volatility for DFA Short Term Municipal Bond Portfolio (DFSMX) is 0.14%, while DFA Short-Term Selective State Municipal Bond Portfolio (DFABX) has a volatility of 0.20%. This indicates that DFSMX experiences smaller price fluctuations and is considered to be less risky than DFABX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DFSMX	DFABX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.14%	0.20%	-0.06%
Volatility (6M) Calculated over the trailing 6-month period	0.37%	0.42%	-0.05%
Volatility (1Y) Calculated over the trailing 1-year period	0.61%	0.56%	+0.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.79%	0.96%	-0.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.77%	0.96%	-0.19%

DFSMX vs. DFABX - Expense Ratio Comparison

DFSMX has a 0.20% expense ratio, which is lower than DFABX's 0.25% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

DFSMX vs. DFABX - Dividend Comparison

DFSMX's dividend yield for the trailing twelve months is around 2.36%, less than DFABX's 2.63% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DFABX DFA Short-Term Selective State Municipal Bond Portfolio	2.63%	2.33%	2.86%	2.52%	1.25%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
DFSMX DFA Short Term Municipal Bond Portfolio	2.36%	2.08%	2.80%	1.94%	0.63%	0.19%	0.83%	1.22%	1.11%	0.95%	0.94%	0.95%

Frequently Asked Questions

Can I hold both DFSMX and DFABX in my portfolio?

DFSMX and DFABX have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DFSMX or DFABX?

DFABX has higher volatility (0.20%) compared to DFSMX (0.14%). In terms of maximum drawdown, DFSMX dropped -2.66% vs DFABX's -2.46%.

Which has better risk-adjusted returns?

DFABX currently has the higher Sharpe Ratio (4.77 vs 4.16), 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.