What this ETF is trying to do

The iShares Short-Term National Muni Bond ETF (SUB) is an exchange-traded fund that invests in short-term municipal bonds. Municipal bonds are loans made to state or local governments. This type of ETF generally aims to provide investors with a way to earn income from these government bonds.

What the numbers show

As of October 6, 2026, the share price was $104.56. To understand how the fund has performed, we look at two different types of returns: price return (which only tracks the share price) and total return (which includes the cash distributions paid to investors).

• Year-to-Date (YTD): The price return is -2.01%, while the total return is -0.10%.

• One Year: The price return is -1.89%, but the total return is 0.66%.

• Three Year: The price return is 1.89%, and the total return is 9.20%.

The estimated price from roughly one year ago was $106.57. If you had invested $10,000 based on that estimated price, the price-only decline of -1.89% would mean your shares would be worth approximately $9,811, not including any distributions you received.

Income and distribution explanation

This ETF usually pays out distributions monthly. Over the last 12 months, it made 12 payments totaling $2.73 per share. This results in a distribution yield of approximately 2.61%.

It is important for beginners to remember that a distribution yield is not the same as a total return. A high yield can provide cash income, but it does not guarantee that the share price will stay the same or go up.

NAV erosion explanation

"NAV erosion" happens when the underlying value of a fund's assets drops over time, often causing the share price to fall permanently. StockValueFinder uses an erosion-risk score to measure this.

This ETF has an erosion score of 94, which is labeled as "Stable / sideways" with "good" severity. Additionally, the severe erosion-risk flag is false, meaning the fund's price trend did not trigger a severe warning.

Pros

• Stability: The erosion-risk score suggests the fund's price has been stable or sideways.

• Consistent Income: The fund has a history of monthly payouts and an income rating grade of "A."

• Positive Long-Term Total Return: The three-year total return is 9.20%.

Cons

• Recent Price Decline: Both the year-to-date and one-year price returns are negative.

• Low Yield: A 2.61% yield may be lower than what some income-seeking investors look for.

Beginner takeaway

The iShares Short-Term National Muni Bond ETF provides regular monthly income. While the share price has dipped slightly over the last year, the total return (which includes the cash paid out) has remained positive over the one-year and three-year periods. This shows why it is important to look at total return rather than just the share price.