MUB vs PMIO

MUBAiShares National Muni Bond ETF

PMIOBPGIM Municipal Income Opportunities ETF

In short

MUB Municipal bonds, indexed and cheap. Since 2007, MUB has packaged investment-grade national munis into tax-exempt monthly income for five basis points a year, and it sits among the deepest pools in the muni-ETF aisle.

PMIO A muni fund with a roving mandate: PGIM's bond desk picks the bonds instead of copying an index, using the Bloomberg 1-15 Year Municipal Index as a yardstick rather than a leash, and pays income monthly.

Stated mandate

MUB The fund seeks to track an index of investment-grade U.S. municipal bonds, providing diversified exposure to the national municipal-bond market and tax-exempt income.

PMIO The Fund seeks total return from current income and capital appreciation.

Why people hold it

• MUB 0.05% a year against a muni-ETF median near 0.30%. In a category built on modest, tax-exempt yields, that fee gap is real money left in the fund.
• The benchmark is AMT-free: the ICE AMT-Free US National Municipal Index screens out munis whose interest can be pulled into the alternative minimum tax.ishares.com
• Tracks its index closely, one of the tighter jobs in its peer group, and distributes monthly. A multi-billion-dollar fund that trades actively.
• Broad investment-grade exposure across the national muni market, spread over thousands of issuers rather than one state's budget.ishares.com

• PMIO Active muni management for 0.25% a year, below the typical muni ETF fee. Stock-picking in the muni market usually costs more than this.
• Built for flexibility: PGIM Fixed Income subadvises and can dial credit and duration risk, rather than owning whatever the benchmark owns.pgim.com
• At least 80% of assets go to municipal bonds whose income is exempt from federal income tax, and the fund distributes monthly.pgim.com
• The portfolio matches the total-return-from-munis job it advertises, and it sits in the upper half of a crowded muni ETF field.

Worth knowing

• MUB Two rivals undercut it: VTEB and SCMB both run 0.03%. A two-basis-point gap is small, but it is a gap.
• A bond fund with no maturity date to hold to. Share prices move with interest rates and muni credit conditions, both directions.
• National by design, so no single-state tilt and no in-state tax angle. iShares runs state-specific muni funds such as NYF for that job.

• PMIO Small and thinly traded next to the muni index giants. Limit orders matter more here than in something like VTEB or MUB.
• You pay for the manager: 0.25% versus 0.03% at VTEB and 0.05% at MUB. Active calls have to earn that gap back.
• Launched in June 2024, so the track record is short and the credit and duration calls have not been tested across a full rate cycle.

Full MUB profile⁠

Full PMIO profile⁠