iShares National Muni Bond ETF (MUB)

ETF ยท NYSE Arca

iShares National Muni Bond ETF (MUB) is an exchange-traded fund listed on NYSE Arca, where it has traded since September 7, 2007.

Type
Exchange-traded fund
Listed On
NYSE Arca
Listed Since
September 7, 2007

Institutional ownership

In 13F filings for the quarter ended June 30, 2026, 1,641 institutions reported holding MUB, with 370.6 million shares worth $39.9 billion in aggregate. The largest reported holder was Bank of America, with 44.7 million shares worth $4.8 billion. Of the 5 largest holders listed below, all 5 added shares during the quarter.

InstitutionSharesValueQuarter change
Bank of America44,699,544$4.8BAdded 6.14%
FMR22,787,508$2.5BAdded 3.85%
Betterment21,039,515$2.3BAdded 7.43%
Envestnet Asset Management17,585,152$1.9BAdded 5.27%
Creative Planning14,801,826$1.6BAdded 3.02%

Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.

Frequently asked questions

What is MUB?

iShares National Muni Bond ETF (MUB) is an exchange-traded fund listed on NYSE Arca, where it has traded since September 7, 2007.

Who are the largest institutional holders of MUB?

In 13F filings for the quarter ended June 30, 2026, the largest reported holders of MUB were Bank of America, FMR and Betterment.

How many institutions own MUB?

1,641 institutions reported a position in MUB for the quarter ended June 30, 2026, worth $39.9 billion in total.

Did institutions buy or sell MUB last quarter?

Of the 5 largest reported holders, all 5 added shares during the quarter. Every reported holder and its change is on the SentiSense ownership page for MUB.

Every reported institutional holder, plus insider and congressional trades in MUB, on SentiSense.