Who owns MUB?
iShares National Muni Bond ETF · iShares
1,642 institutions reported holding MUB, worth $40.1B, in Form 13F filings for June 30, 2026.
Top 10 institutional holders of MUB
| Firm | Location | Value | Shares | Change |
|---|---|---|---|---|
| Bank of America Corp. | Charlotte, NC | $4.8B | 44,699,544 | +2,585,884 shares |
| FMR LLC | Boston, MA | $2.5B | 22,787,508 | +843,798 shares |
| Betterment LLC | New York, NY | $2.3B | 21,039,515 | +1,455,783 shares |
| Envestnet Asset Management Inc. | Berwyn, PA | $1.9B | 17,585,152 | +880,501 shares |
| Creative Planning | Overland Park, KS | $1.6B | 14,801,826 | +434,348 shares |
| LPL Financial LLC | Fort Mill, SC | $1.4B | 12,757,070 | +994,686 shares |
| Fisher Asset Management, LLC | Plano, TX | $1.4B | 12,648,532 | +1,052,371 shares |
| Wells Fargo & Company | San Francisco, CA | $1.1B | 10,375,308 | +366,820 shares |
| Mercer Global Advisors Inc. | Denver, CO | $1.1B | 10,361,448 | +1,003,774 shares |
| Northwestern Mutual Wealth Management Co | Milwaukee, WI | $1.0B | 9,354,522 | +451,163 shares |
The full list comes with the Advisors and Institutions package.
Sign up to see them allFrom SEC Form 13F, for managers with $100M+ in US securities. Change compares June 30, 2026 with March 31, 2026. “New position” means no holding in the prior filing we have.
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Frequently asked questions
Who owns MUB?
1,642 institutional managers reported holding MUB in Form 13F filings for June 30, 2026, worth $40.1B in total. The largest reported position was held by Bank of America Corp., at $4.8B.
Did institutions buy or sell MUB last quarter?
Reported 13F value rose 6.7% from March 31, 2026, which includes price moves as well as buying and selling. 137 firms reported a new position and 75 sold all of theirs.
What is a Form 13F?
A quarterly report filed with the SEC by institutional investment managers with $100 million or more in qualifying US securities. It lists their long positions at quarter end. It doesn't cover retail investors, cash, short positions, or managers under the threshold, so it shows part of a fund's ownership, not all of it.
How often is MUB ownership data updated?
13F filings are due 45 days after each quarter ends. The next set is due around mid-November. Positions can be up to about four and a half months old by the time a new set arrives.