PMOAX vs. WHYIX

Last updated Jul 18, 2026

PMOAX (Principal Opportunistic Municipal Fund) and WHYIX (Allspring High Yield Municipal Bond Fund) are both High Yield Muni funds. Over the past 10 years, PMOAX returned 2.33%/yr vs 2.79%/yr for WHYIX. Their correlation of 0.83 suggests significant overlap in exposure. PMOAX charges 0.84%/yr vs 0.55%/yr for WHYIX.

Performance

PMOAX vs. WHYIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Principal Opportunistic Municipal Fund (PMOAX) and Allspring High Yield Municipal Bond Fund (WHYIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PMOAX achieves a 2.57% return, which is significantly lower than WHYIX's 3.26% return. Over the past 10 years, PMOAX has underperformed WHYIX with an annualized return of 2.33%, while WHYIX has yielded a comparatively higher 2.79% annualized return.

PMOAX

• 1D: -0.21%
• 1M: 0.15%
• 6M: 2.03%
• YTD: 2.57%
• 1Y: 9.36%
• 3Y*: 4.33%
• 5Y*: -0.35%
• 10Y*: 2.33%

WHYIX

• 1D: -0.21%
• 1M: 0.27%
• 6M: 2.82%
• YTD: 3.26%
• 1Y: 10.27%
• 3Y*: 4.70%
• 5Y*: 0.85%
• 10Y*: 2.79%

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

PMOAX vs. WHYIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PMOAX Principal Opportunistic Municipal Fund	2.57%	2.91%	4.40%	6.76%	-16.56%	6.38%	4.40%	10.55%	1.34%	10.14%
WHYIX Allspring High Yield Municipal Bond Fund	3.26%	2.76%	5.61%	5.78%	-12.07%	5.02%	2.19%	9.18%	3.76%	9.00%

Correlation

The correlation between PMOAX and WHYIX is 0.79, 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	0.79
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (10Y) Calculated over the trailing 10-year period	0.85
Correlation (All Time) Calculated using the full available price history since Feb 1, 2013	0.83

The correlation between PMOAX and WHYIX has been stable across timeframes, ranging from 0.79 to 0.88 - a consistent structural relationship.

Return for Risk

PMOAX vs. WHYIX — Risk / Return Rank

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

PMOAX

PMOAX Risk / Return Rank: 91
PMOAX Sharpe Ratio Rank: 95
PMOAX Sortino Ratio Rank: 96
PMOAX Omega Ratio Rank: 95
PMOAX Calmar Ratio Rank: 82
PMOAX Martin Ratio Rank: 85

WHYIX

WHYIX Risk / Return Rank: 95
WHYIX Sharpe Ratio Rank: 97
WHYIX Sortino Ratio Rank: 97
WHYIX Omega Ratio Rank: 96
WHYIX Calmar Ratio Rank: 90
WHYIX Martin Ratio Rank: 93

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.

PMOAX vs. WHYIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal Opportunistic Municipal Fund (PMOAX) and Allspring High Yield Municipal Bond Fund (WHYIX). 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.

	PMOAX	WHYIX	Difference
Sharpe ratio: Return per unit of total volatility	2.81	3.06	-0.25
Sortino ratio: Return per unit of downside risk	4.78	5.03	-0.25
Omega ratio: Gain probability vs. loss probability	1.71	1.77	-0.06
Calmar ratio: Return relative to maximum drawdown	3.11	3.77	-0.66
Martin ratio: Return relative to average drawdown	12.36	15.36	-3.00

PMOAX vs. WHYIX - Sharpe Ratio Comparison

The current PMOAX Sharpe Ratio is 2.81, which is comparable to the WHYIX Sharpe Ratio of 3.06. The chart below compares the historical Sharpe Ratios of PMOAX and WHYIX, 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

PMOAX vs. WHYIX - Drawdown Comparison

The maximum PMOAX drawdown since its inception was -21.33%, which is greater than WHYIX's maximum drawdown of -16.88%. Use the drawdown chart below to compare losses from any high point for PMOAX and WHYIX.

Drawdown Indicators

	PMOAX	WHYIX	Difference
Max Drawdown Largest peak-to-trough decline	-21.33%	-16.88%	-4.45%
Max Drawdown (1Y) Largest decline over 1 year	-2.91%	-2.64%	-0.27%
Max Drawdown (3Y) Largest decline over 3 years	-6.41%	-7.18%	+0.77%
Max Drawdown (5Y) Largest decline over 5 years	-21.33%	-16.88%	-4.45%
Max Drawdown (10Y) Largest decline over 10 years	-21.33%	-16.88%	-4.45%
Current Drawdown Current decline from peak	-2.06%	-0.84%	-1.22%
Average Drawdown Average peak-to-trough decline	-4.77%	-3.02%	-1.75%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.74%	0.65%	+0.09%

Volatility

PMOAX vs. WHYIX - Volatility Comparison

The current volatility for Principal Opportunistic Municipal Fund (PMOAX) is 0.68%, while Allspring High Yield Municipal Bond Fund (WHYIX) has a volatility of 0.74%. This indicates that PMOAX experiences smaller price fluctuations and is considered to be less risky than WHYIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PMOAX	WHYIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.68%	0.74%	-0.06%
Volatility (6M) Calculated over the trailing 6-month period	2.32%	2.49%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	3.29%	3.31%	-0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.77%	4.87%	-0.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.04%	4.53%	+0.51%

PMOAX vs. WHYIX - Expense Ratio Comparison

PMOAX has a 0.84% expense ratio, which is higher than WHYIX's 0.55% expense ratio.

Dividends

PMOAX vs. WHYIX - Dividend Comparison

PMOAX's dividend yield for the trailing twelve months is around 4.50%, less than WHYIX's 4.69% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PMOAX Principal Opportunistic Municipal Fund	4.50%	4.59%	4.32%	3.42%	3.36%	3.09%	3.28%	3.48%	3.89%	3.62%	3.57%	3.73%
WHYIX Allspring High Yield Municipal Bond Fund	4.69%	4.69%	4.71%	3.74%	4.04%	3.81%	4.24%	3.73%	3.96%	3.89%	4.41%	3.96%

Frequently Asked Questions

Can I hold both PMOAX and WHYIX in my portfolio?

PMOAX and WHYIX have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PMOAX or WHYIX?

WHYIX has higher volatility (0.74%) compared to PMOAX (0.68%). In terms of maximum drawdown, PMOAX dropped -21.33% vs WHYIX's -16.88%.

Which has better risk-adjusted returns?

WHYIX currently has the higher Sharpe Ratio (3.06 vs 2.81), 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.