ETF Report: FIRST TRUST FLEXIBLE MUNICIPAL HIGH INCOME ETF (MFLX)

What this ETF is trying to do

The FIRST TRUST FLEXIBLE MUNICIPAL HIGH INCOME ETF, known by its ticker symbol MFLX, is an exchange-traded fund. This type of investment focuses on providing income through municipal bonds. Its goal is to provide regular payments to investors.

What the numbers show

As of July 10, 2026, the current price of one share is $17.305. Looking at how the price has changed over time, the one-year price return was 4.6568%. When you include the payments made to investors, the one-year total return was 9.1122%.

To understand how price changes affect money, let's look at a simple example. Imagine you invested $10,000 into this ETF one year ago when the estimated price was about $16.53 per share. If you only looked at the share price change, your $10,000 would have grown to roughly $10,465 based on the price return. However, because of the extra payments (total returns), your investment would actually be worth more than that.

Income and distribution explanation

This ETF is designed to pay out money regularly. Over the last 12 months, it made 12 distributions. This means it usually pays investors every month. The trailing distribution was $0.707 per share, which results in a distribution yield of 4.0855%.

It is important to remember that a high yield alone can be misleading. A high percentage might look attractive, but you must also look at whether the share price is staying steady or falling.

NAV erosion explanation

"NAV erosion" happens when the value of the underlying assets in the ETF drops, causing the share price to fall over time. If an ETF's price collapses, it can destroy your principal (the original money you put in).

For MFLX, the "erosion score" is 94, which is labeled as "Stable / sideways." This means the fund is not currently suffering from severe erosion. Income investors usually prefer ETFs that go sideways or slightly up instead of ones that collapse in price. This is because if the share price drops too much, the loss of your original money might be larger than the income you receive.

Pros

• The ETF has shown a positive total return over one, three, and year-to-date periods.

• It provides regular monthly income.

• The price history shows it is currently stable rather than collapsing.

Cons

• The share price does not grow as fast as the total return because much of the value comes from distributions.

Beginner takeaway

MFLX focuses on providing monthly income through municipal bonds. While the yield is a key feature, looking at the "total return" (price change plus payments) gives a better picture of how the investment is performing. Currently, the fund shows stable price movement rather than severe NAV erosion.