Who Owns MUB?
iShares National Muni Bond ETF — Institutional Ownership & 13F Holdings
$107.39
+0.01 (+0.01%)
Market Cap
$43.3B
Shares Outstanding
397,467,678
Institutional Holders
1,478
Total Inst. Value
$24.9B
% of Float Held
—
QoQ Holder Change
+676
Institutional data as of Q1 2025
New Positions
435
Closed Positions
104
Increased
437
Decreased
471
Institutional Ownership Trend
Top 10 Institutional Holders(Q1 2025)
| # | Fund | Value | Shares |
|---|---|---|---|
| 1 | BANK OF AMERICA CORP /DE/ | $3.0B | 28,842,668 |
| 2 | Betterment LLC | $1.9B | 18,408,702 |
| 3 | FMR LLC | $1.4B | 12,928,038 |
| 4 | WELLS FARGO & COMPANY/MN | $1.1B | 10,067,934 |
| 5 | JPMORGAN CHASE & CO | $1.0B | 9,522,657 |
| 6 | MORGAN STANLEY | $933.7M | 8,855,124 |
| 7 | Bank of New York Mellon Corp | $884.1M | 8,384,779 |
| 8 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $800.1M | 7,588,089 |
| 9 | MERCER GLOBAL ADVISORS INC /ADV | $717.1M | 6,801,267 |
| 10 | Fisher Asset Management, LLC | $657.5M | 6,235,796 |
Biggest Buyers & Sellers This Quarter
Top Buyers
| Fund | Shares Added | Value |
|---|---|---|
| Betterment LLC | +150K | $1.9B |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | +551K | $800.1M |
| MERCER GLOBAL ADVISORS INC /ADV | +366K | $717.1M |
| Fisher Asset Management, LLC | +490K | $657.5M |
| SEI INVESTMENTS CO | +11K | $583.5M |
Top Sellers
| Fund | Shares Removed | Value |
|---|---|---|
| Brooklyn FI, LLC | -6.8M | $14.1M |
| BANK OF AMERICA CORP /DE/ | -2.0M | $3.0B |
| JANE STREET GROUP, LLC | -1.9M | $36.6M |
| OSAIC HOLDINGS, INC. | -815K | $64.1M |
| Meeder Advisory Services, Inc. | -764K | $2.8M |
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Frequently Asked Questions
How many institutional investors hold MUB?
As of Q1 2025, 1478 institutional investors report holding MUB (iShares National Muni Bond ETF) in their 13F filings.
Which hedge fund owns the most MUB?
The largest institutional holder of MUB is BANK OF AMERICA CORP /DE/ with $3.0B in shares.
Are institutions buying or selling MUB?
This quarter, 435 institutions opened new positions in MUB and 104 closed their positions.
What is 13F institutional ownership?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in qualifying assets. It discloses their US equity holdings, providing transparency into what the largest investors are buying and selling.
How often is institutional ownership data updated?
13F filings are due 45 days after each calendar quarter end (May 15, Aug 14, Nov 14, Feb 14). Data is updated on HedgeTrace as new filings are processed.