PVI vs. SUB

Last updated Apr 1, 2026

Compare and contrast key facts about Invesco VRDO Tax-Free ETF (PVI) and iShares Short-Term National Muni Bond ETF (SUB).

PVI and SUB are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. PVI is a passively managed fund by Invesco that tracks the performance of the ICE US Municipal AMT-Free VRDO Constrained Index. It was launched on Nov 15, 2007. SUB is a passively managed fund by iShares that tracks the performance of the ICE Short Maturity AMT-Free US National Municipal Index - Benchmark TR Gross. It was launched on Nov 5, 2008. Both PVI and SUB are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

PVI vs. SUB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco VRDO Tax-Free ETF (PVI) and iShares Short-Term National Muni Bond ETF (SUB). The values are adjusted to include any dividend payments, if applicable.

PVI vs. SUB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PVI Invesco VRDO Tax-Free ETF	0.29%	3.12%	2.43%	2.74%	0.89%	-0.07%	0.17%	1.18%	1.21%	0.44%
SUB iShares Short-Term National Muni Bond ETF	0.23%	3.64%	2.17%	2.91%	-2.05%	0.03%	2.51%	2.93%	1.85%	0.75%

Returns By Period

In the year-to-date period, PVI achieves a 0.29% return, which is significantly higher than SUB's 0.23% return. Over the past 10 years, PVI has underperformed SUB with an annualized return of 1.26%, while SUB has yielded a comparatively higher 1.46% annualized return.

PVI

• 1D: 0.20%
• 1M: 0.59%
• YTD: 0.29%
• 6M: 1.29%
• 1Y: 2.40%
• 3Y*: 2.67%
• 5Y*: 1.87%
• 10Y*: 1.26%

SUB

• 1D: 0.04%
• 1M: -0.66%
• YTD: 0.23%
• 6M: 1.01%
• 1Y: 3.37%
• 3Y*: 2.75%
• 5Y*: 1.39%
• 10Y*: 1.46%

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

PVI vs. SUB - Expense Ratio Comparison

PVI has a 0.25% 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%.

PVI

Invesco VRDO Tax-Free ETF

SUB

iShares Short-Term National Muni Bond ETF

Return for Risk

PVI vs. SUB — Risk / Return Rank

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

PVI

PVI Risk / Return Rank: 61
PVI Sharpe Ratio Rank: 47
PVI Sortino Ratio Rank: 49
PVI Omega Ratio Rank: 45
PVI Calmar Ratio Rank: 84
PVI Martin Ratio Rank: 78

SUB

SUB Risk / Return Rank: 92
SUB Sharpe Ratio Rank: 94
SUB Sortino Ratio Rank: 92
SUB Omega Ratio Rank: 97
SUB Calmar Ratio Rank: 89
SUB Martin Ratio Rank: 88

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.

PVI vs. SUB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco VRDO Tax-Free ETF (PVI) 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.

	PVI	SUB	Difference
Sharpe ratio Return per unit of total volatility	0.87	2.25	-1.38
Sortino ratio Return per unit of downside risk	1.32	2.71	-1.39
Omega ratio Gain probability vs. loss probability	1.17	1.61	-0.44
Calmar ratio Return relative to maximum drawdown	2.48	2.82	-0.34
Martin ratio Return relative to average drawdown	8.39	10.30	-1.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PVI vs. SUB - Sharpe Ratio Comparison

The current PVI Sharpe Ratio is 0.87, which is lower than the SUB Sharpe Ratio of 2.25. The chart below compares the historical Sharpe Ratios of PVI and SUB, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	PVI	SUB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.87	2.25	-1.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.97	0.85	+0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.56	+0.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	0.42	+0.11

Correlation

The correlation between PVI and SUB is 0.04, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

PVI vs. SUB - Dividend Comparison

PVI's dividend yield for the trailing twelve months is around 2.19%, less than SUB's 2.47% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PVI Invesco VRDO Tax-Free ETF	2.19%	2.22%	2.72%	3.36%	0.56%	0.00%	0.36%	1.15%	1.14%	0.56%	0.13%	0.00%
SUB iShares Short-Term National Muni Bond ETF	2.47%	2.42%	2.10%	1.73%	0.86%	0.72%	1.23%	1.58%	1.32%	0.95%	0.75%	0.77%

Drawdowns

PVI vs. SUB - Drawdown Comparison

The maximum PVI drawdown since its inception was -4.10%, smaller than the maximum SUB drawdown of -9.46%. Use the drawdown chart below to compare losses from any high point for PVI and SUB.

Drawdown Indicators

	PVI	SUB	Difference
Max Drawdown Largest peak-to-trough decline	-4.10%	-9.46%	+5.36%
Max Drawdown (1Y) Largest decline over 1 year	-0.99%	-1.23%	+0.24%
Max Drawdown (5Y) Largest decline over 5 years	-1.17%	-4.35%	+3.18%
Max Drawdown (10Y) Largest decline over 10 years	-1.17%	-9.46%	+8.29%
Current Drawdown Current decline from peak	-0.12%	-0.66%	+0.54%
Average Drawdown Average peak-to-trough decline	-0.28%	-0.92%	+0.64%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.29%	0.34%	-0.05%

Volatility

PVI vs. SUB - Volatility Comparison

Invesco VRDO Tax-Free ETF (PVI) has a higher volatility of 0.74% compared to iShares Short-Term National Muni Bond ETF (SUB) at 0.53%. This indicates that PVI's price experiences larger fluctuations and is considered to be riskier than SUB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PVI	SUB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.74%	0.53%	+0.21%
Volatility (6M) Calculated over the trailing 6-month period	1.93%	0.80%	+1.13%
Volatility (1Y) Calculated over the trailing 1-year period	2.79%	1.51%	+1.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.93%	1.64%	+0.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.72%	2.59%	-0.87%