SHORX vs. AFB

Last updated Jun 6, 2026

SHORX (Western Asset Oregon Municipals Fund) and AFB (AllianceBernstein National Municipal Income Fund) are both Municipal Bonds funds. Over the past 10 years, SHORX returned 1.60%/yr vs 1.47%/yr for AFB. At a 0.24 correlation, their price movements are largely independent. SHORX charges 1.30%/yr vs 1.56%/yr for AFB.

Performance

SHORX vs. AFB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Western Asset Oregon Municipals Fund (SHORX) and AllianceBernstein National Municipal Income Fund (AFB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SHORX achieves a 1.60% return, which is significantly lower than AFB's 5.53% return. Over the past 10 years, SHORX has outperformed AFB with an annualized return of 1.60%, while AFB has yielded a comparatively lower 1.47% annualized return.

SHORX

• 1D: 0.10%
• 1M: 0.74%
• YTD: 1.60%
• 6M: 1.94%
• 1Y: 7.00%
• 3Y*: 3.45%
• 5Y*: 0.54%
• 10Y*: 1.60%

AFB

• 1D: -1.33%
• 1M: 0.00%
• YTD: 5.53%
• 6M: 5.34%
• 1Y: 15.08%
• 3Y*: 6.52%
• 5Y*: -1.38%
• 10Y*: 1.47%

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

SHORX vs. AFB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SHORX Western Asset Oregon Municipals Fund	1.60%	4.73%	1.52%	4.03%	-9.24%	1.50%	4.37%	6.67%	0.28%	4.10%
AFB AllianceBernstein National Municipal Income Fund	5.53%	4.41%	4.10%	7.41%	-25.93%	7.25%	7.80%	20.13%	-5.43%	6.15%

Correlation

The correlation between SHORX and AFB 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 (3Y) Calculated over the trailing 3-year period	0.46
Correlation (5Y) Calculated over the trailing 5-year period	0.40
Correlation (10Y) Calculated over the trailing 10-year period	0.33
Correlation (All Time) Calculated using the full available price history since Jan 30, 2002	0.24

The correlation between SHORX and AFB shifts across timeframes, from 0.24 (all time) to 0.46 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

SHORX vs. AFB — Risk / Return Rank

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

SHORX

SHORX Risk / Return Rank: 74
SHORX Sharpe Ratio Rank: 85
SHORX Sortino Ratio Rank: 86
SHORX Omega Ratio Rank: 93
SHORX Calmar Ratio Rank: 56
SHORX Martin Ratio Rank: 49

AFB

AFB Risk / Return Rank: 48
AFB Sharpe Ratio Rank: 45
AFB Sortino Ratio Rank: 55
AFB Omega Ratio Rank: 48
AFB Calmar Ratio Rank: 48
AFB Martin Ratio Rank: 47

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.

SHORX vs. AFB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Western Asset Oregon Municipals Fund (SHORX) and AllianceBernstein National Municipal Income Fund (AFB). 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.

	SHORX	AFB	Difference
Sharpe ratio: Return per unit of total volatility	2.70	1.90	+0.80
Sortino ratio: Return per unit of downside risk	4.07	3.03	+1.04
Omega ratio: Gain probability vs. loss probability	1.70	1.37	+0.34
Calmar ratio: Return relative to maximum drawdown	2.77	2.54	+0.23
Martin ratio: Return relative to average drawdown	9.84	9.58	+0.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SHORX vs. AFB - Sharpe Ratio Comparison

The current SHORX Sharpe Ratio is 2.70, which is higher than the AFB Sharpe Ratio of 1.90. The chart below compares the historical Sharpe Ratios of SHORX and AFB, 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

	SHORX	AFB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.70	1.90	+0.80
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.15	-0.13	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.40	0.13	+0.27
Sharpe Ratio (All Time) Calculated using the full available price history	1.05	0.32	+0.73

Drawdowns

SHORX vs. AFB - Drawdown Comparison

The maximum SHORX drawdown since its inception was -13.44%, smaller than the maximum AFB drawdown of -50.98%. Use the drawdown chart below to compare losses from any high point for SHORX and AFB.

Drawdown Indicators

	SHORX	AFB	Difference
Max Drawdown Largest peak-to-trough decline	-13.44%	-50.98%	+37.54%
Max Drawdown (1Y) Largest decline over 1 year	-2.54%	-5.96%	+3.42%
Max Drawdown (3Y) Largest decline over 3 years	-5.38%	-16.32%	+10.94%
Max Drawdown (5Y) Largest decline over 5 years	-13.43%	-35.17%	+21.74%
Max Drawdown (10Y) Largest decline over 10 years	-13.43%	-35.17%	+21.74%
Current Drawdown Current decline from peak	-0.06%	-10.14%	+10.08%
Average Drawdown Average peak-to-trough decline	-1.85%	-8.98%	+7.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.71%	1.58%	-0.87%

Volatility

SHORX vs. AFB - Volatility Comparison

The current volatility for Western Asset Oregon Municipals Fund (SHORX) is 0.99%, while AllianceBernstein National Municipal Income Fund (AFB) has a volatility of 2.98%. This indicates that SHORX experiences smaller price fluctuations and is considered to be less risky than AFB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SHORX	AFB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.99%	2.98%	-1.99%
Volatility (6M) Calculated over the trailing 6-month period	1.81%	5.90%	-4.09%
Volatility (1Y) Calculated over the trailing 1-year period	2.61%	7.99%	-5.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.67%	10.96%	-7.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.97%	11.24%	-7.27%

SHORX vs. AFB - Expense Ratio Comparison

SHORX has a 1.30% expense ratio, which is lower than AFB's 1.56% expense ratio.

Dividends

SHORX vs. AFB - Dividend Comparison

SHORX's dividend yield for the trailing twelve months is around 2.34%, less than AFB's 5.16% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AFB AllianceBernstein National Municipal Income Fund	5.16%	4.72%	3.83%	3.62%	5.26%	4.32%	4.18%	3.93%	4.53%	4.71%	5.34%	5.80%
SHORX Western Asset Oregon Municipals Fund	2.34%	3.11%	2.45%	2.03%	1.77%	1.58%	1.96%	2.70%	3.33%	3.21%	3.42%	3.59%

Frequently Asked Questions

Can I hold both SHORX and AFB in my portfolio?

SHORX and AFB have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SHORX or AFB?

AFB has higher volatility (2.98%) compared to SHORX (0.99%). In terms of maximum drawdown, SHORX dropped -13.44% vs AFB's -50.98%.

Which has better risk-adjusted returns?

SHORX currently has the higher Sharpe Ratio (2.70 vs 1.90), 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.